⚠️ (WORK IN PROGRESS) A practical collection of JavaScript Web Worker patterns. Explore examples from basic communication to advanced techniques like Transferable Objects and Shared Workers. Ideal for building high-performance, non-blocking web apps without freezing the UI. (And Angular)

W3C Strategic Highlights September 2019 This report was prepared for the September 2019 W3C Advisory Committee Meeting (W3C Member link). See the accompanying W3C Fact Sheet — September 2019. For the previous edition, see the April 2019 W3C Strategic Highlights. For future editions of this report, please consult the latest version. A Chinese translation is available. ☰ Contents Introduction Future Web Standards Meeting Industry Needs Web Payments Digital Publishing Media and Entertainment Web & Telecommunications Real-Time Communications (WebRTC) Web & Networks Automotive Web of Things Strengthening the Core of the Web HTML CSS Fonts SVG Audio Performance Web Performance WebAssembly Testing Browser Testing and Tools WebPlatform Tests Web of Data Web for All Security, Privacy, Identity Internationalization (i18n) Web Accessibility Outreach to the world W3C Developer Relations W3C Training Translations W3C Liaisons Introduction This report highlights recent work of enhancement of the existing landscape of the Web platform and innovation for the growth and strength of the Web. 33 working groups and a dozen interest groups enable W3C to pursue its mission through the creation of Web standards, guidelines, and supporting materials. We track the tremendous work done across the Consortium through homogeneous work-spaces in Github which enables better monitoring and management. We are in the middle of a period where we are chartering numerous working groups which demonstrate the rapid degree of change for the Web platform: After 4 years, we are nearly ready to publish a Payment Request API Proposed Recommendation and we need to soon charter follow-on work. In the last year we chartered the Web Payment Security Interest Group. In the last year we chartered the Web Media Working Group with 7 specifications for next generation Media support on the Web. We have Accessibility Guidelines under W3C Member review which includes Silver, a new approach. We have just launched the Decentralized Identifier Working Group which has tremendous potential because Decentralized Identifier (DID) is an identifier that is globally unique, resolveable with high availability, and cryptographically verifiable. We have Privacy IG (PING) under W3C Member review which strengthens our focus on the tradeoff between privacy and function. We have a new CSS charter under W3C Member review which maps the group's work for the next three years. In this period, W3C and the WHATWG have succesfully completed the negotiation of a Memorandum of Understanding rooted in the mutual belief that that having two distinct specifications claiming to be normative is generally harmful for the Web community. The MOU, signed last May, describes how the two organizations are to collaborate on the development of a single authoritative version of the HTML and DOM specifications. W3C subsequently rechartered the HTML Working Group to assist the W3C community in raising issues and proposing solutions for the HTML and DOM specifications, and for the production of W3C Recommendations from WHATWG Review Drafts. As the Web evolves continuously, some groups are looking for ways for specifications to do so as well. So-called "evergreen recommendations" or "living standards" aim to track continuous development (and maintenance) of features, on a feature-by-feature basis, while getting review and patent commitments. We see the maturation and further development of an incredible number of new technologies coming to the Web. Continued progress in many areas demonstrates the vitality of the W3C and the Web community, as the rest of the report illustrates. Future Web Standards W3C has a variety of mechanisms for listening to what the community thinks could become good future Web standards. These include discussions with the Membership, discussions with other standards bodies, the activities of thousands of participants in over 300 community groups, and W3C Workshops. There are lots of good ideas. The W3C strategy team has been identifying promising topics and invites public participation. Future, recent and under consideration Workshops include: Inclusive XR (5-6 November 2019, Seattle, WA, USA) to explore existing and future approaches on making Virtual and Augmented Reality experiences more inclusive, including to people with disabilities; W3C Workshop on Data Models for Transportation (12-13 September 2019, Palo Alto, CA, USA) W3C Workshop on Web Games (27-28 June 2019, Redmond, WA, USA), view report Second W3C Workshop on the Web of Things (3-5 June 2019, Munich, Germany) W3C Workshop on Web Standardization for Graph Data; Creating Bridges: RDF, Property Graph and SQL (4-6 March 2019, Berlin, Germany), view report Web & Machine Learning. The Strategy Funnel documents the staff's exploration of potential new work at various phases: Exploration and Investigation, Incubation and Evaluation, and eventually to the chartering of a new standards group. The Funnel view is a GitHub Project where new area are issues represented by “cards” which move through the columns, usually from left to right. Most cards start in Exploration and move towards Chartering, or move out of the funnel. Public input is welcome at any stage but particularly once Incubation has begun. This helps W3C identify work that is sufficiently incubated to warrant standardization, to review the ecosystem around the work and indicate interest in participating in its standardization, and then to draft a charter that reflects an appropriate scope. Ongoing feedback can speed up the overall standardization process. Since the previous highlights document, W3C has chartered a number of groups, and started discussion on many more: Newly Chartered or Rechartered Web Application Security WG (03-Apr) Web Payment Security IG (17-Apr) Patent and Standards IG (24-Apr) Web Applications WG (14-May) Web & Networks IG (16-May) Media WG (23-May) Media and Entertainment IG (06-Jun) HTML WG (06-Jun) Decentralized Identifier WG (05-Sep) Extended Privacy IG (PING) (30-Sep) Verifiable Claims WG (30-Sep) Service Workers WG (31-Dec) Dataset Exchange WG (31-Dec) Web of Things Working Group (31-Dec) Web Audio Working Group (31-Dec) Proposed charters / Advance Notice Accessibility Guidelines WG Privacy IG (PING) RDF Literal Direction WG Timed Text WG CSS WG Web Authentication WG Closed Internationalization Tag Set IG Meeting Industry Needs Web Payments All Web Payments specifications W3C's payments standards enable a streamlined checkout experience, enabling a consistent user experience across the Web with lower front end development costs for merchants. Users can store and reuse information and more quickly and accurately complete online transactions. The Web Payments Working Group has republished Payment Request API as a Candidate Recommendation, aiming to publish a Proposed Recommendation in the Fall 2019, and is discussing use cases and features for Payment Request after publication of the 1.0 Recommendation. Browser vendors have been finalizing implementation of features added in the past year (view the implementation report). As work continues on the Payment Handler API and its implementation (currently in Chrome and Edge Canary), one focus in 2019 is to increase adoption in other browsers. Recently, Mastercard demonstrated the use of Payment Request API to carry out EMVCo's Secure Remote Commerce (SRC) protocol whose payment method definition is being developed with active participation by Visa, Mastercard, American Express, and Discover. Payment method availability is a key factor in merchant considerations about adopting Payment Request API. The ability to get uniform adoption of a new payment method such as Secure Remote Commerce (SRC) also depends on the availability of the Payment Handler API in browsers, or of proprietary alternatives. Web Monetization, which the Web Payments Working Group will discuss again at its face-to-face meeting in September, can be used to enable micropayments as an alternative revenue stream to advertising. Since the beginning of 2019, Amazon, Brave Software, JCB, Certus Cybersecurity Solutions and Netflix have joined the Web Payments Working Group. In April, W3C launched the Web Payment Security Group to enable W3C, EMVCo, and the FIDO Alliance to collaborate on a vision for Web payment security and interoperability. Participants will define areas of collaboration and identify gaps between existing technical specifications in order to increase compatibility among different technologies, such as: How do SRC, FIDO, and Payment Request relate? The Payment Services Directive 2 (PSD2) regulations in Europe are scheduled to take effect in September 2019. What is the role of EMVCo, W3C, and FIDO technologies, and what is the current state of readiness for the deadline? How can we improve privacy on the Web at the same time as we meet industry requirements regarding user identity? Digital Publishing All Digital Publishing specifications, Publication milestones The Web is the universal publishing platform. Publishing is increasingly impacted by the Web, and the Web increasingly impacts Publishing. Topic of particular interest to Publishing@W3C include typography and layout, accessibility, usability, portability, distribution, archiving, offline access, print on demand, and reliable cross referencing. And the diverse publishing community represented in the groups consist of the traditional "trade" publishers, ebook reading system manufacturers, but also publishers of audio book, scholarly journals or educational materials, library scientists or browser developers. The Publishing Working Group currently concentrates on Audiobooks which lack a comprehensive standard, thus incurring extra costs and time to publish in this booming market. Active development is ongoing on the future standard: Publication Manifest Audiobook profile for Web Publications Lightweight Packaging Format The BD Comics Manga Community Group, the Synchronized Multimedia for Publications Community Group, the Publishing Community Group and a future group on archival, are companions to the working group where specific work is developed and incubated. The Publishing Community Group is a recently launched incubation channel for Publishing@W3C. The goal of the group is to propose, document, and prototype features broadly related to: publications on the Web reading modes and systems and the user experience of publications The EPUB 3 Community Group has successfully completed the revision of EPUB 3.2. The Publishing Business Group fosters ongoing participation by members of the publishing industry and the overall ecosystem in the development of Web infrastructure to better support the needs of the industry. The Business Group serves as an additional conduit to the Publishing Working Group and several Community Groups for feedback between the publishing ecosystem and W3C. The Publishing BG has played a vital role in fostering and advancing the adoption and continued development of EPUB 3. In particular the BG provided critical support to the update of EPUBCheck to validate EPUB content to the new EPUB 3.2 specification. This resulted in the development, in conjunction with the EPUB3 Community Group, of a new generation of EPUBCheck, i.e., EPUBCheck 4.2 production-ready release. Media and Entertainment All Media specifications The Media and Entertainment vertical tracks media-related topics and features that create immersive experiences for end users. HTML5 brought standard audio and video elements to the Web. Standardization activities since then have aimed at turning the Web into a professional platform fully suitable for the delivery of media content and associated materials, enabling missing features to stream video content on the Web such as adaptive streaming and content protection. Together with Microsoft, Comcast, Netflix and Google, W3C received an Technology & Engineering Emmy Award in April 2019 for standardization of a full TV experience on the Web. Current goals are to: Reinforce core media technologies: Creation of the Media Working Group, to develop media-related specifications incubated in the WICG (e.g. Media Capabilities, Picture-in-picture, Media Session) and maintain maintain/evolve Media Source Extensions (MSE) and Encrypted Media Extensions (EME). Improve support for Media Timed Events: data cues incubation. Enhance color support (HDR, wide gamut), in scope of the CSS WG and in the Color on the Web CG. Reduce fragmentation: Continue annual releases of a common and testable baseline media devices, in scope of the Web Media APIs CG and in collaboration with the CTA WAVE Project. Maintain the Road-map of Media Technologies for the Web which highlights Web technologies that can be used to build media applications and services, as well as known gaps to enable additional use cases. Create the future: Discuss perspectives for Media and Entertainment for the Web. Bring the power of GPUs to the Web (graphics, machine learning, heavy processing), under incubation in the GPU for the Web CG. Transition to a Working Group is under discussion. Determine next steps after the successful W3C Workshop on Web Games of June 2019. View the report. Timed Text The Timed Text Working Group develops and maintains formats used for the representation of text synchronized with other timed media, like audio and video, and notably works on TTML, profiles of TTML, and WebVTT. Recent progress includes: A robust WebVTT implementation report poises the specification for publication as a proposed recommendation. Discussions around re-chartering, notably to add a TTML Profile for Audio Description deliverable to the scope of the group, and clarify that rendering of captions within XR content is also in scope. Immersive Web Hardware that enables Virtual Reality (VR) and Augmented Reality (AR) applications are now broadly available to consumers, offering an immersive computing platform with both new opportunities and challenges. The ability to interact directly with immersive hardware is critical to ensuring that the web is well equipped to operate as a first-class citizen in this environment. The Immersive Web Working Group has been stabilizing the WebXR Device API while the companion Immersive Web Community Group incubates the next series of features identified as key for the future of the Immersive Web. W3C plans a workshop focused on the needs and benefits at the intersection of VR & Accessibility (Inclusive XR), on 5-6 November 2019 in Seattle, WA, USA, to explore existing and future approaches on making Virtual and Augmented Reality experiences more inclusive. Web & Telecommunications The Web is the Open Platform for Mobile. Telecommunication service providers and network equipment providers have long been critical actors in the deployment of Web technologies. As the Web platform matures, it brings richer and richer capabilities to extend existing services to new users and devices, and propose new and innovative services. Real-Time Communications (WebRTC) All Real-Time Communications specifications WebRTC has reshaped the whole communication landscape by making any connected device a potential communication end-point, bringing audio and video communications anywhere, on any network, vastly expanding the ability of operators to reach their customers. WebRTC serves as the corner-stone of many online communication and collaboration services. The WebRTC Working Group aims to bringing WebRTC 1.0 (and companion specification Media Capture and Streams) to Recommendation by the end of 2019. Intense efforts are focused on testing (supported by a dedicated hackathon at IETF 104) and interoperability. The group is considering pushing features that have not gotten enough traction to separate modules or to a later minor revision of the spec. Beyond WebRTC 1.0, the WebRTC Working Group will focus its efforts on WebRTC NV which the group has started documenting by identifying use cases. Web & Networks Recently launched, in the wake of the May 2018 Web5G workshop, the Web & Networks Interest Group is chaired by representatives from AT&T, China Mobile and Intel, with a goal to explore solutions for web applications to achieve better performance and resource allocation, both on the device and network. The group's first efforts are around use cases, privacy & security requirements and liaisons. Automotive All Automotive specifications To create a rich application ecosystem for vehicles and other devices allowed to connect to the vehicle, the W3C Automotive Working Group is delivering a service specification to expose all common vehicle signals (engine temperature, fuel/charge level, range, tire pressure, speed, etc.) The Vehicle Information Service Specification (VISS), which is a Candidate Recommendation, is seeing more implementations across the industry. It provides the access method to a common data model for all the vehicle signals –presently encapsulating a thousand or so different data elements– and will be growing to accommodate the advances in automotive such as autonomous and driver assist technologies and electrification. The group is already working on a successor to VISS, leveraging the underlying data model and the VIWI submission from Volkswagen, for a more robust means of accessing vehicle signals information and the same paradigm for other automotive needs including location-based services, media, notifications and caching content. The Automotive and Web Platform Business Group acts as an incubator for prospective standards work. One of its task forces is using W3C VISS in performing data sampling and off-boarding the information to the cloud. Access to the wealth of information that W3C's auto signals standard exposes is of interest to regulators, urban planners, insurance companies, auto manufacturers, fleet managers and owners, service providers and others. In addition to components needed for data sampling and edge computing, capturing user and owner consent, information collection methods and handling of data are in scope. The upcoming W3C Workshop on Data Models for Transportation (September 2019) is expected to focus on the need of additional ontologies around transportation space. Web of Things All Web of Things specifications W3C's Web of Things work is designed to bridge disparate technology stacks to allow devices to work together and achieve scale, thus enabling the potential of the Internet of Things by eliminating fragmentation and fostering interoperability. Thing descriptions expressed in JSON-LD cover the behavior, interaction affordances, data schema, security configuration, and protocol bindings. The Web of Things complements existing IoT ecosystems to reduce the cost and risk for suppliers and consumers of applications that create value by combining multiple devices and information services. There are many sectors that will benefit, e.g. smart homes, smart cities, smart industry, smart agriculture, smart healthcare and many more. The Web of Things Working Group is finishing the initial Web of Things standards, with support from the Web of Things Interest Group: Web of Things Architecture Thing Descriptions Strengthening the Core of the Web HTML The HTML Working Group was chartered early June to assist the W3C community in raising issues and proposing solutions for the HTML and DOM specifications, and to produce W3C Recommendations from WHATWG Review Drafts. A few days before, W3C and the WHATWG signed a Memorandum of Understanding outlining the agreement to collaborate on the development of a single version of the HTML and DOM specifications. Issues and proposed solutions for HTML and DOM done via the newly rechartered HTML Working Group in the WHATWG repositories The HTML Working Group is targetting November 2019 to bring HTML and DOM to Candidate Recommendations. CSS All CSS specifications CSS is a critical part of the Open Web Platform. The CSS Working Group gathers requirements from two large groups of CSS users: the publishing industry and application developers. Within W3C, those groups are exemplified by the Publishing groups and the Web Platform Working Group. The former requires things like better pagination support and advanced font handling, the latter needs intelligent (and fast!) scrolling and animations. What we know as CSS is actually a collection of almost a hundred specifications, referred to as ‘modules’. The current state of CSS is defined by a snapshot, updated once a year. The group also publishes an index defining every term defined by CSS specifications. Fonts All Fonts specifications The Web Fonts Working Group develops specifications that allow the interoperable deployment of downloadable fonts on the Web, with a focus on Progressive Font Enrichment as well as maintenance of WOFF Recommendations. Recent and ongoing work includes: Early API experiments by Adobe and Monotype have demonstrated the feasibility of a font enrichment API, where a server delivers a font with minimal glyph repertoire and the client can query the full repertoire and request additional subsets on-the-fly. In other experiments, the Brotli compression used in WOFF 2 was extended to support shared dictionaries and patch update. Metrics to quantify improvement are a current hot discussion topic. The group will meet at ATypi 2019 in Japan, to gather requirements from the international typography community. The group will first produce a report summarizing the strengths and weaknesses of each prototype solution by Q2 2020. SVG All SVG specifications SVG is an important and widely-used part of the Open Web Platform. The SVG Working Group focuses on aligning the SVG 2.0 specification with browser implementations, having split the specification into a currently-implemented 2.0 and a forward-looking 2.1. Current activity is on stabilization, increased integration with the Open Web Platform, and test coverage analysis. The Working Group was rechartered in March 2019. A new work item concerns native (non-Web-browser) uses of SVG as a non-interactive, vector graphics format. Audio The Web Audio Working Group was extended to finish its work on the Web Audio API, expecting to publish it as a Recommendation by year end. The specification enables synthesizing audio in the browser. Audio operations are performed with audio nodes, which are linked together to form a modular audio routing graph. Multiple sources — with different types of channel layout — are supported. This modular design provides the flexibility to create complex audio functions with dynamic effects. The first version of Web Audio API is now feature complete and is implemented in all modern browsers. Work has started on the next version, and new features are being incubated in the Audio Community Group. Performance Web Performance All Web Performance specifications There are currently 18 specifications in development in the Web Performance Working Group aiming to provide methods to observe and improve aspects of application performance of user agent features and APIs. The W3C team is looking at related work incubated in the W3C GPU for the Web (WebGPU) Community Group which is poised to transition to a W3C Working Group. A preliminary draft charter is available. WebAssembly All WebAssembly specifications WebAssembly improves Web performance and power by being a virtual machine and execution environment enabling loaded pages to run native (compiled) code. It is deployed in Firefox, Edge, Safari and Chrome. The specification will soon reach Candidate Recommendation. WebAssembly enables near-native performance, optimized load time, and perhaps most importantly, a compilation target for existing code bases. While it has a small number of native types, much of the performance increase relative to Javascript derives from its use of consistent typing. WebAssembly leverages decades of optimization for compiled languages and the byte code is optimized for compactness and streaming (the web page starts executing while the rest of the code downloads). Network and API access all occurs through accompanying Javascript libraries -- the security model is identical to that of Javascript. Requirements gathering and language development occur in the Community Group while the Working Group manages test development, community review and progression of specifications on the Recommendation Track. Testing Browser testing plays a critical role in the growth of the Web by: Improving the reliability of Web technology definitions; Improving the quality of implementations of these technologies by helping vendors to detect bugs in their products; Improving the data available to Web developers on known bugs and deficiencies of Web technologies by publishing results of these tests. Browser Testing and Tools The Browser Testing and Tools Working Group is developing WebDriver version 2, having published last year the W3C Recommendation of WebDriver. WebDriver acts as a remote control interface that enables introspection and control of user agents, provides a platform- and language-neutral wire protocol as a way for out-of-process programs to remotely instruct the behavior of Web, and emulates the actions of a real person using the browser. WebPlatform Tests The WebPlatform Tests project now provides a mechanism which allows to fully automate tests that previously needed to be run manually: TestDriver. TestDriver enables sending trusted key and mouse events, sending complex series of trusted pointer and key interactions for things like in-content drag-and-drop or pinch zoom, and even file upload. Since 2014 W3C began work on this coordinated open-source effort to build a cross-browser test suite for the Web Platform, which WHATWG, and all major browsers adopted. Web of Data All Data specifications There have been several great success stories around the standardization of data on the web over the past year. Verifiable Claims seems to have significant uptake. It is also significant that the Distributed Identifier WG charter has received numerous favorable reviews, and was just recently launched. JSON-LD has been a major success with the large deployment on Web sites via schema.org. JSON-LD 1.1 completed technical work, about to transition to CR More than 25% of websites today include schema.org data in JSON-LD The Web of Things description is in CR since May, making use of JSON-LD Verifiable Credentials data model is in CR since July, also making use of JSON-LD Continued strong interest in decentralized identifiers Engagement from the TAG with reframing core documents, such as Ethical Web Principles, to include data on the web within their scope Data is increasingly important for all organizations, especially with the rise of IoT and Big Data. W3C has a mature and extensive suite of standards relating to data that were developed over two decades of experience, with plans for further work on making it easier for developers to work with graph data and knowledge graphs. Linked Data is about the use of URIs as names for things, the ability to dereference these URIs to get further information and to include links to other data. There are ever-increasing sources of open Linked Data on the Web, as well as data services that are restricted to the suppliers and consumers of those services. The digital transformation of industry is seeking to exploit advanced digital technologies. This will facilitate businesses to integrate horizontally along the supply and value chains, and vertically from the factory floor to the office floor. W3C is seeking to make it easier to support enterprise-wide data management and governance, reflecting the strategic importance of data to modern businesses. Traditional approaches to data have focused on tabular databases (SQL/RDBMS), Comma Separated Value (CSV) files, and data embedded in PDF documents and spreadsheets. We're now in midst of a major shift to graph data with nodes and labeled directed links between them. Graph data is: Faster than using SQL and associated JOIN operations More favorable to integrating data from heterogeneous sources Better suited to situations where the data model is evolving In the wake of the recent W3C Workshop on Graph Data we are in the process of launching a Graph Standardization Business Group to provide a business perspective with use cases and requirements, to coordinate technical standards work and liaisons with external organizations. Web for All Security, Privacy, Identity All Security specifications, all Privacy specifications Authentication on the Web As the WebAuthn Level 1 W3C Recommendation published last March is seeing wide implementation and adoption of strong cryptographic authentication, work is proceeding on Level 2. The open standard Web API gives native authentication technology built into native platforms, browsers, operating systems (including mobile) and hardware, offering protection against hacking, credential theft, phishing attacks, thus aiming to end the era of passwords as a security construct. You may read more in our March press release. Privacy An increasing number of W3C specifications are benefitting from Privacy and Security review; there are security and privacy aspects to every specification. Early review is essential. Working with the TAG, the Privacy Interest Group has updated the Self-Review Questionnaire: Security and Privacy. Other recent work of the group includes public blogging further to the exploration of anti-patterns in standards and permission prompts. Security The Web Application Security Working Group adopted Feature Policy, aiming to allow developers to selectively enable, disable, or modify the behavior of some of these browser features and APIs within their application; and Fetch Metadata, aiming to provide servers with enough information to make a priori decisions about whether or not to service a request based on the way it was made, and the context in which it will be used. The Web Payment Security Interest Group, launched last April, convenes members from W3C, EMVCo, and the FIDO Alliance to discuss cooperative work to enhance the security and interoperability of Web payments (read more about payments). Internationalization (i18n) All Internationalization specifications, educational articles related to Internationalization, spec developers checklist Only a quarter or so current Web users use English online and that proportion will continue to decrease as the Web reaches more and more communities of limited English proficiency. If the Web is to live up to the "World Wide" portion of its name, and for the Web to truly work for stakeholders all around the world engaging with content in various languages, it must support the needs of worldwide users as they engage with content in the various languages. The growth of epublishing also brings requirements for new features and improved typography on the Web. It is important to ensure the needs of local communities are captured. The W3C Internationalization Initiative was set up to increase in-house resources dedicated to accelerating progress in making the World Wide Web "worldwide" by gathering user requirements, supporting developers, and education & outreach. For an overview of current projects see the i18n radar. W3C's Internationalization efforts progressed on a number of fronts recently: Requirements: New African and European language groups will work on the gap analysis, errata and layout requirements. Gap analysis: Japanese, Devanagari, Bengali, Tamil, Lao, Khmer, Javanese, and Ethiopic updated in the gap-analysis documents. Layout requirements document: notable progress tracked in the Southeast Asian Task Force while work continues on Chinese layout requirements. Developer support: Spec reviews: the i18n WG continues active review of specifications of the WHATWG and other W3C Working Groups. Short review checklist: easy way to begin a self-review to help spec developers understand what aspects of their spec are likely to need attention for internationalization, and points them to more detailed checklists for the relevant topics. It also helps those reviewing specs for i18n issues. Strings on the Web: Language and Direction Metadata lays out issues and discusses potential solutions for passing information about language and direction with strings in JSON or other data formats. The document was rewritten for clarity, and expanded. The group is collaborating with the JSON-LD and Web Publishing groups to develop a plan for updating RDF, JSON-LD and related specifications to handle metadata for base direction of text (bidi). User-friendly test format: a new format was developed for Internationalization Test Suite tests, which displays helpful information about how the test works. This particularly useful because those tests are pointed to by educational materials and gap-analysis documents. Web Platform Tests: a large number of tests in the i18n test suite have been ported to the WPT repository, including: css-counter-styles, css-ruby, css-syntax, css-test, css-text-decor, css-writing-modes, and css-pseudo. Education & outreach: (for all educational materials, see the HTML & CSS Authoring Techniques) Web Accessibility All Accessibility specifications, WAI resources The Web Accessibility Initiative supports W3C's Web for All mission. Recent achievements include: Education and training: Inaccessibility of CAPTCHA updated to bring our analysis and recommendations up to date with CAPTCHA practice today, concluding two years of extensive work and invaluable input from the public (read more on the W3C Blog Learn why your web content and applications should be accessible. The Education and Outreach Working Group has completed revision and updating of the Business Case for Digital Accessibility. Accessibility guidelines: The Accessibility Guidelines Working Group has continued to update WCAG Techniques and Understanding WCAG 2.1; and published a Candidate Recommendation of Accessibility Conformance Testing Rules Format 1.0 to improve inter-rater reliability when evaluating conformance of web content to WCAG An updated charter is being developed to host work on "Silver", the next generation accessibility guidelines (WCAG 2.2) There are accessibility aspects to most specifications. Check your work with the FAST checklist. Outreach to the world W3C Developer Relations To foster the excellent feedback loop between Web Standards development and Web developers, and to grow participation from that diverse community, recent W3C Developer Relations activities include: @w3cdevs tracks the enormous amount of work happening across W3C W3C Track during the Web Conference 2019 in San Francisco Tech videos: W3C published the 2019 Web Games Workshop videos The 16 September 2019 Developer Meetup in Fukuoka, Japan, is open to all and will combine a set of technical demos prepared by W3C groups, and a series of talks on a selected set of W3C technologies and projects W3C is involved with Mozilla, Google, Samsung, Microsoft and Bocoup in the organization of ViewSource 2019 in Amsterdam (read more on the W3C Blog) W3C Training In partnership with EdX, W3C's MOOC training program, W3Cx offers a complete "Front-End Web Developer" (FEWD) professional certificate program that consists of a suite of five courses on the foundational languages that power the Web: HTML5, CSS and JavaScript. We count nearly 900K students from all over the world. Translations Many Web users rely on translations of documents developed at W3C whose official language is English. W3C is extremely grateful to the continuous efforts of its community in ensuring our various deliverables in general, and in our specifications in particular, are made available in other languages, for free, ensuring their exposure to a much more diverse set of readers. Last Spring we developed a more robust system, a new listing of translations of W3C specifications and updated the instructions on how to contribute to our translation efforts. W3C Liaisons Liaisons and coordination with numerous organizations and Standards Development Organizations (SDOs) is crucial for W3C to: make sure standards are interoperable coordinate our respective agenda in Internet governance: W3C participates in ICANN, GIPO, IGF, the I* organizations (ICANN, IETF, ISOC, IAB). ensure at the government liaison level that our standards work is officially recognized when important to our membership so that products based on them (often done by our members) are part of procurement orders. W3C has ARO/PAS status with ISO. W3C participates in the EU MSP and Rolling Plan on Standardization ensure the global set of Web and Internet standards form a compatible stack of technologies, at the technical and policy level (patent regime, fragmentation, use in policy making) promote Standards adoption equally by the industry, the public sector, and the public at large Coralie Mercier, Editor, W3C Marketing & Communications $Id: Overview.html,v 1.60 2019/10/15 12:05:52 coralie Exp $ Copyright © 2019 W3C ® (MIT, ERCIM, Keio, Beihang) Usage policies apply.

A chatbot (also known as a talkbot, chatterbot, Bot, IM bot, interactive agent, or Artificial Conversational Entity)The classic historic early chatbots are ELIZA (1966) and PARRY (1972).More recent notable programs include A.L.I.C.E., Jabberwacky and D.U.D.E (Agence Nationale de la Recherche and CNRS 2006). While ELIZA and PARRY were used exclusively to simulate typed conversation, many chatbots now include functional features such as games and web searching abilities. In 1984, a book called The Policeman's Beard is Half Constructed was published, allegedly written by the chatbot Racter (though the program as released would not have been capable of doing so). One pertinent field of AI research is natural language processing. Usually, weak AI fields employ specialized software or programming languages created specifically for the narrow function required. For example, A.L.I.C.E. uses a markup language called AIML, which is specific to its function as a conversational agent, and has since been adopted by various other developers of, so called, Alicebots. Nevertheless, A.L.I.C.E. is still purely based on pattern matching techniques without any reasoning capabilities, the same technique ELIZA was using back in 1966. This is not strong AI, which would require sapience and logical reasoning abilities. Jabberwacky learns new responses and context based on real-time user interactions, rather than being driven from a static database. Some more recent chatbots also combine real-time learning with evolutionary algorithms that optimise their ability to communicate based on each conversation held. Still, there is currently no general purpose conversational artificial intelligence, and some software developers focus on the practical aspect, information retrieval. Chatbot competitions focus on the Turing test or more specific goals. Two such annual contests are the Loebner Prize and The Chatterbox Challenge (offline since 2015, materials can still be found from web archives). According to Forrester (2015), AI will replace 16 percent of American jobs by the end of the decade.Chatbots have been used in applications such as customer service, sales and product education. However, a study conducted by Narrative Science in 2015 found that 80 percent of their respondents believe AI improves worker performance and creates jobs.[citation needed] is a computer program or an artificial intelligence which conducts a conversation via auditory or textual methods. Such programs are often designed to convincingly simulate how a human would behave as a conversational partner, thereby passing the Turing test. Chatbots are typically used in dialog systems for various practical purposes including customer service or information acquisition. Some chatterbots use sophisticated natural language processing systems, but many simpler systems scan for keywords within the input, then pull a reply with the most matching keywords, or the most similar wording pattern, from a database. The term "ChatterBot" was originally coined by Michael Mauldin (creator of the first Verbot, Julia) in 1994 to describe these conversational programs.Today, most chatbots are either accessed via virtual assistants such as Google Assistant and Amazon Alexa, via messaging apps such as Facebook Messenger or WeChat, or via individual organizations' apps and websites. Chatbots can be classified into usage categories such as conversational commerce (e-commerce via chat), analytics, communication, customer support, design, developer tools, education, entertainment, finance, food, games, health, HR, marketing, news, personal, productivity, shopping, social, sports, travel and utilities. Background

Implement a multi-threaded HTTP web server based on boss-worker thread pattern in C, using pthread library.

# Routing with EdgeJS https://github.com/Nate158s The `{{ PACKAGE_NAME }}/core` package provides a JavaScript API for controlling routing and caching from your code base rather than a CDN web portal. Using this _{{ EDGEJS_LABEL }}_ approach allows this vital routing logic to be properly tested, reviewed, and version controlled, just like the rest of your application code. Using the Router, you can: - Proxy requests to upstream sites - Send redirects from the network edge - Render responses on the server using Next.js, Nuxt.js, Angular, or any other framework that supports server side rendering. - Alter request and response headers - Send synthetic responses - Configure multiple destinations for split testing ## Configuration To define routes for {{ PRODUCT_NAME }}, create a `routes.js` file in the root of your project. You can override the default path to the router by setting the `routes` key in `{{ CONFIG_FILE }}`. The `routes.js` file should export an instance of `{{ PACKAGE_NAME }}/core/router/Router`: ```js // routes.js const { Router } = require('{{ PACKAGE_NAME }}/core/router') module.exports = new Router() ``` ## Declare Routes Declare routes using the method corresponding to the HTTP method you want to match. ```js // routes.js const { Router } = require('{{ PACKAGE_NAME }}/core/router') module.exports = new Router().get('/some-path', ({ cache, proxy }) => { // handle the request here }) ``` All HTTP methods are available: - get - put - post - patch - delete - head To match all methods, use `match`: ```js // routes.js const { Router } = require('{{ PACKAGE_NAME }}/core/router') module.exports = new Router().match('/some-path', ({ cache, proxy }) => { // handle the request here }) ``` ## Route Execution When {{ PRODUCT_NAME }} receives a request, it executes **each route that matches the request** in the order in which they are declared until one sends a response. The following methods return a response: - [appShell](/docs/api/core/classes/_router_responsewriter_.responsewriter.html#appshell) - [compute](/docs/api/core/classes/_router_responsewriter_.responsewriter.html#compute) - [proxy](/docs/api/core/classes/_router_responsewriter_.responsewriter.html#proxy) - [redirect](/docs/api/core/classes/_router_responsewriter_.responsewriter.html#redirect) - [send](/docs/api/core/classes/_router_responsewriter_.responsewriter.html#send) - [serveStatic](/docs/api/core/classes/_router_responsewriter_.responsewriter.html#servestatic) - [serviceWorker](/docs/api/core/classes/_router_responsewriter_.responsewriter.html#serviceworker) - [stream](/docs/api/core/classes/_router_responsewriter_.responsewriter.html#stream) - [use](/docs/api/core/classes/_router_responsewriter_.responsewriter.html#compute) Multiple routes can therefore be executed for a given request. A common pattern is to add caching with one route and render the response with a later one using middleware. In the following example we cache then render a response with Next.js: ```js const { Router } = require('{{ PACKAGE_NAME }}/core/router') const { nextRoutes } = require('{{ PACKAGE_NAME }}/next') // In this example a request to /products/1 will be cached by the first route, then served by the `nextRoutes` middleware new Router() .get('/products/:id', ({ cache }) => { cache({ edge: { maxAgeSeconds: 60 * 60, staleWhileRevalidateSeconds: 60 * 60 }, }) }) .use(nextRoutes) ``` ### Alter Requests and Responses {{ PRODUCT_NAME }} offers APIs to manipulate request and response headers and cookies. The APIs are: | Operation | Request | Upstream Response | Response sent to Browser | | ------------- | --------------------- | ------------------------------ | ------------------------ | | Set header | `setRequestHeader` | `setUpstreamResponseHeader` | `setResponseHeader` | | Add cookie | `*` | `addUpstreamResponseCookie` | `addResponseCookie` | | Update header | `updateRequestHeader` | `updateUpstreamResponseHeader` | `updateResponseHeader` | | Update cookie | `*` | `updateUpstreamResponseCookie` | `updateResponseCookie` | | Remove header | `removeRequestHeader` | `removeUpstreamResponseHeader` | `removeResponseHeader` | | Remove cookie | `*` | `removeUpstreamResponseCookie` | `removeResponseCookie` | `*` Adding, updating, or removing a request cookie can be achieved with `updateRequestHeader` applied to `cookie` header. You can find detailed descriptions of these APIs in the `{{ PACKAGE_NAME }}/core` [documentation](/docs/api/core/classes/_router_responsewriter_.responsewriter.html). #### Embedded Values You can inject values from the request or response into headers or cookies as template literals using the `${value}` format. For example: `setResponseHeader('original-request-path', '${path}')` would add an `original-request-path` response header whose value is the request path. | Value | Embedded value | Description | | --------------- | ---------------------- | ----------------------------------------------------------------------------------------------------------------------------- | | HTTP method | `${method}` | The value of the HTTP method used for the request (e.g. `GET`) | | URL | `${url}` | The complete URL path including any query strings (e.g. `/search?query=docs`). Protocol, hostname, and port are not included. | | Path | `${path}` | The URL path excluding any query strings (e.g. `/search`) | | Query string | `${query:<name>}` | The value of the `<name>` query string or empty if not available. | | Request header | `${req:<name>}` | The value of the `<name>` request header or empty if not available. | | Request cookie | `${req:cookie:<name>}` | The value of the `<name>` cookie in `cookie` request header or empty if not available. | | Response header | `${res:<name>}` | The value of the `<name>` response header or empty if not available. | ## Route Pattern Syntax The syntax for route paths is provided by [path-to-regexp](https://github.com/pillarjs/path-to-regexp#path-to-regexp), which is the same library used by [Express](https://expressjs.com/). ### Named Parameters Named parameters are defined by prefixing a colon to the parameter name (`:foo`). ```js new Router().get('/:foo/:bar', res => { /* ... */ }) ``` **Please note:** Parameter names must use "word characters" (`[A-Za-z0-9_]`). #### Custom Matching Parameters Parameters can have a custom regexp, which overrides the default match (`[^/]+`). For example, you can match digits or names in a path: ```js new Router().get('/icon-:foo(\\d+).png', res => { /* ... */ }) ``` **Tip:** Backslashes need to be escaped with another backslash in JavaScript strings. #### Custom Prefix and Suffix Parameters can be wrapped in `{}` to create custom prefixes or suffixes for your segment: ```js new Router().get('/:attr1?{-:attr2}?{-:attr3}?', res => { /* ... */ }) ``` ### Unnamed Parameters It is possible to write an unnamed parameter that only consists of a regexp. It works the same the named parameter, except it will be numerically indexed: ```js new Router().get('/:foo/(.*)', res => { /* ... */ }) ``` ### Modifiers Modifiers must be placed after the parameter (e.g. `/:foo?`, `/(test)?`, `/:foo(test)?`, or `{-:foo(test)}?`). #### Optional Parameters can be suffixed with a question mark (`?`) to make the parameter optional. ```js new Router().get('/:foo/:bar?', res => { /* ... */ }) ``` **Tip:** The prefix is also optional, escape the prefix `\/` to make it required. #### Zero or More Parameters can be suffixed with an asterisk (`*`) to denote zero or more parameter matches. ```js new Router().get('/:foo*', res => { /* res.params.foo will be an array */ }) ``` The captured parameter value will be provided as an array. #### One or More Parameters can be suffixed with a plus sign (`+`) to denote one or more parameter matches. ```js new Router().get('/:foo+', res => { /* res.params.foo will be an array */ }) ``` The captured parameter value will be provided as an array. ## Matching Method, Query Parameters, Cookies, and Headers Match can either take a URL path, or an object which allows you to match based on method, query parameters, cookies, or request headers: ```js router.match( { path: '/some-path', // value is route-pattern syntax method: /GET|POST/i, // value is a regular expression cookies: { currency: /^(usd)$/i }, // keys are cookie names, values are regular expressions headers: { 'x-moov-device': /^desktop$/i }, // keys are header names, values are regular expressions query: { page: /^(1|2|3)$/ }, // keys are query parameter names, values are regular expressions }, () => {}, ) ``` ## Body Matching for POST requests You can also match HTTP `POST` requests based on their request body content as in the following example: ```js router.match( { body: { parse: 'json', criteria: { operationName: 'GetProducts' } }, // the body content will parsed as JSON and the parsed JSON matched against the presence of the criteria properties (in this case a GraphQL operation named 'GetProducts') }, () => {}, ) ``` Currently the only body content supported is JSON. Body content is parsed as JSON and is matched against the presence of the fields specified in the `criteria` field. The [_POST Body Matching Criteria_](#section_post_body_matching_criteria) section below contains examples of using the `criteria` field. Body matching can be combined with other match parameters such as headers and cookies. For example, ```js router.match( { // Only matches GetProducts operations to the /graphql endpoint // for logged in users path: '/graphql', cookies: { loginStatus: /^(loggedIn)$/i }, // loggedin users body: { parse: 'json', criteria: { operationName: 'GetProducts' } }, }, () => {}, ) ``` ### Caching & POST Body Matching When body matching is combined with `cache` in a route, **the HTTP request body will automatically be used as the cache key.** For example, the code below will cache GraphQL `GetProducts` queries using the entire request body as the cache key: ```js router.match( { body: { parse: 'json', criteria: { operationName: 'GetProducts' } }, }, ({ cache }) => { cache({ edge: { maxAgeSeconds: 60 * 60, staleWhileRevalidateSeconds: 60 * 60 * 24, // this way stale items can still be prefetched }, }) }, ) ``` You can still add additional parameters to the cache key using the normal {{ EDGEJS_LABEL }} `key` property. For example, the code below will cache GraphQL `GetProducts` queries separately for each user based on their userID cookie _and_ the HTTP body of the request. ```js router.match( { body: { parse: 'json', criteria: { operationName: 'GetProducts' } }, }, ({ cache }) => { cache({ edge: { maxAgeSeconds: 60 * 60, staleWhileRevalidateSeconds: 60 * 60 * 24, // this way stale items can still be prefetched }, key: new CustomCacheKey().addCookie('userID'), // Split cache by userID }) }, ) ``` ### POST Body Matching Criteria The `criteria` property can be a string or regular expression. For example, the router below, ```js router.match( { body: { parse: 'json', criteria: { foo: 'bar' } }, }, () => {}, ) ``` would match an HTTP POST request body containing: ```js { "foo": "bar", "bar": "foo" } ``` ### Regular Expression Criteria Regular expressions can also be used as `criteria`. For example, ```js router.match( { body: { parse: 'json', criteria: { operationName: /^Get/ } }, }, () => {}, ) ``` would match an HTTP POST body containing: ```js { "operationName": "GetShops", "query": "...", "variables": {} } ``` ### Nested JSON Criteria You can also use a nested object to match a field at a specific location in the JSON. For example, ```js router.match( { body: { parse: 'json', criteria: { operation: { name: 'GetShops', }, }, }, }, () => {}, ) ``` would match an HTTP POST body containing: ```js { "operation": { "name": "GetShops", "query": "..." } } ``` ## GraphQL Queries The {{ EDGEJS_LABEL }} router provides a `graphqlOperation` method for matching GraphQL. ```js router.graphqlOperation('GetProducts', res => { /* Handle the POST for the GetProducts query specifically */ }) ``` By default, the `graphqlOperation` assumes your GraphQL endpoint is at `/graphql`. You can alter this behavior by using the `path` property as shown below: ```js router.graphqlOperation({ path: '/api/graphql', name: 'GetProducts' }, res => { /* Handle the POST for the GetProducts query specifically */ }) ``` Note that when the `graphqlOperation` function is used, the HTTP request body will automatically be included in the cache key. The `graphqlOperation` function is provided to simplify matching of common GraphQL scenarios. For complex GraphQL matching (such as authenticated data), you can use the generic [_Body Matching for POST requests_](#section_body_matching_for_post_requests) feature. See the guide on [Implementing GraphQL Routing](/guides/graphql) in your project. ## Request Handling The second argument to routes is a function that receives a `ResponseWriter` and uses it to send a response. Using `ResponseWriter` you can: - Proxy a backend configured in `{{ CONFIG_FILE }}` - Serve a static file - Send a redirect - Send a synthetic response - Cache the response at edge and in the browser - Manipulate request and response headers [See the API Docs for Response Writer](/docs/__version__/api/core/classes/_router_responsewriter_.responsewriter.html) ## Full Example This example shows typical usage of `{{ PACKAGE_NAME }}/core`, including serving a service worker, next.js routes (vanity and conventional routes), and falling back to a legacy backend. ```js // routes.js const { Router } = require('{{ PACKAGE_NAME }}/core/router') module.exports = new Router() .get('/service-worker.js', ({ serviceWorker }) => { // serve the service worker built by webpack serviceWorker('dist/service-worker.js') }) .get('/p/:productId', ({ cache }) => { // cache products for one hour at edge and using the service worker cache({ edge: { maxAgeSeconds: 60 * 60, staleWhileRevalidateSeconds: 60 * 60, }, browser: { maxAgeSeconds: 0, serviceWorkerSeconds: 60 * 60, }, }) proxy('origin') }) .fallback(({ proxy }) => { // serve all unmatched URLs from the origin backend configured in {{ CONFIG_FILE }} proxy('origin') }) ``` ## Errors Handling You can use the router's `catch` method to return specific content when the request results in an error status (For example, a 500). Using `catch`, you can also alter the `statusCode` and `response` on the edge before issuing a response to the user. ```js router.catch(number | Regexp, (routeHandler: Function)) ``` ### Examples To issue a custom error page when the origin returns a 500: ```js // routes.js const { Router } = require('{{ PACKAGE_NAME }}/core/router') module.exports = new Router() // Example route .get('/failing-route', ({ proxy }) => { proxy('broken-origin') }) // So let's assume that backend "broken-origin" returns 500, so instead // of rendering the broken-origin response we can alter that by specifing .catch .catch(500, ({ serveStatic }) => { serveStatic('static/broken-origin-500-page.html', { statusCode: 502, }) }) ``` The `.catch` method allows the edge router to render a response based on the result preceeding routes. So in the example above whenever we receive a 500 we respond with `broken-origin-500-page.html` from the application's `static` directory and change the status code to 502. - Your catch callback is provided a [ResponseWriter](/docs/api/core/classes/_router_responsewriter_.responsewriter.html) instance. You can use any ResponseWriter method except `proxy` inside `.catch`. - We highly recommend keeping `catch` routes simple. Serve responses using `serveStatic` instead of `send` to minimize the size of the edge bundle. ## Environment Edge Redirects In addition to sending redirects at the edge within the router configuration, this can also be configured at the environment level within the Layer0 Developer Console. Under _&lt;Your Environment&gt; &#8594; Configuration_, click _Edit_ to draft a new configuration. Scroll down to the _Redirects_ section:  Click _Add A Redirect_ to configure the path or host you wish to redirect to:  **Note:** you will need to activate and redeploy your site for this change to take effect.

Companion Code for Tech.pro Article - Web Worker Patterns

An image resizing web API written in Go based on Web-Queue-Worker pattern

A sample Azure solution which applies a Command pattern across a web and worker role.

Site built on Angular 8 and .NET Core 3.1 ,TSQL, Code First Entity Framework Core, with C#, ASP.net MVC 6 and .NET Core Web Api, SQLServer 2014. Patterns include Repository, Unit Of Work, and Solid Priciples with Code First Entity Framework atop a 2014 SQLServer DB. My Fundi is a Prototype app that caters for Fundis (manual workers like plumbers)

Reduces the boilerplate in setting up a request/response pattern between your main thread and a web worker

Currently very basic implementation of the Google 'MapReduce' pattern in Javascript, using the new HTML5 Web Workers to process in parallel.

High-performance browser stress suite utilizing Web Workers and WebGL to max out RAM, CPU, GPU, Storage, and Network. Features real-time visualization, competitive benchmarks, and custom stress patterns. Built with Vite, React, and Tailwind CSS.

(work in process! Need one week to end it) CRUD web application that manages workers. Technology Stack: JDBC, JSON, SERVLETS, MySql. Some patterns :-) In near future i will seriously expand this if i have i time. Spring will come soon

"DIGICV" is an innovative project revolutionizing resume and cover letter creation. It seamlessly integrates an API, web, and worker service with a strong foundation in Dependency Injection, Clean Architecture, Repository, and Unit of Work design patterns. Unit testing and Docker support make it efficient and adaptable for users.

Go Distributed Crawler - multi-service web crawling system implementing producer-consumer pattern. Includes: Crawler Service - HTML parsing & link extraction Queue Service - Redis-based URL management Storage Service - MySQL data persistence gRPC inter-service communication Concurrent workers for parallel processing

Site built on Angular 8 and .NET Core 8.0 ,TSQL, Code First Entity Framework Core, with C#, ASP.net MVC 6 and .NET Core Web Api, SQLServer 2014. Patterns include Repository, Unit Of Work, and Solid Priciples with Code First Entity Framework atop a 2014 SQLServer DB. My Fundi is a Prototype app that caters for Fundis (manual workers like plumbers)

My Fundi is a Prototype app that caters for Fundis (manual workers like plumbers, carpenters via subscriptions to the site in order to land jobs, with a number of clients the site exposes to them) - site built on Angular 8 and .NET Core 3.1, Code First Entity Framework Core, with C#, ASP.net MVC 6 and .NET Core Web Api, SQLServer 2014. Patterns include Repository, UnitOfWork, SOLID Principles, and front end Angular 8, Javascript, TypeScript, JQuery, HTML5, CSS 3, Bootstrap.

Given the severity of the new coronavirus pneumonia outbreak, access to medical care has been difficult, and health workers have struggled.With the continuous development of Internet technology and the rise of the concept of "Internet plus", more and more traditional industries begin to carry out informatization reform, and the medical industry, which has been reformed many times, is in the front row of informatization reform.All the first-class hospitals in China have their own perfect hospital management information system (HIS), and other hospitals are also speeding up their own hospital information construction.In the background of uneven distribution of medical resources and overall shortage, the appointment registration in hospitals has become the most direct way to alleviate the problem of difficult access to medical services, as well as a more favorable way to combat the rampant "registration traffickers".This paper is an analysis and implementation of hospital registration system under this background.This article first introduces the medical information and the development of the hospital appointment register system and the research status at home and abroad, then this system technology needed to make a statement and this system USES B/S mode, using node. Js server language, use the Express as a web development framework, front end design patterns using HTML and CSS and javascript language production through the browser to display a static page and at the same time with the JQuery framework and the bootstrap framework interface layout, use mongDB database based on distributed file storage,It also USES many third-party modules (middleware) such as bodyParser (parsing post request data), cookies (read/write cookies), swig (template engine parsing), and markdown (markdown grammar parsing generation module).Then, this paper analyzes the requirements and feasibility of the system, and then designs the system and database according to the requirements analysis.Then, this article from the front user registration and login function, user appointment to see a doctor function, user message function to the system background user management function, appointment information management function, department and doctor information management function, message management function and other different functional modules system implementation.Finally, the system is tested and summarized.

How many technology companies are there in the It is clear for some individuals to feel that the vast majority of these huge tech organizations are US-based. Notwithstanding, there have been marvellous changes off late wherein few Asian organizations are likewise highlighted in the tech top ten giving extreme rivalry to their US partners. Here goes our rundown of the 20 Greatest Technology companies in the world in 2021: 1 Xiaomi 11 Sony 2 Taiwan Semiconductor Manufacturing Company, Limited (TSMC) 12 IBM 3 Lenovo 13 Hitachi 4 Cisco 14 Dell Technologies 5 LG Electronics 15 Huawei 6 Tencent 16 Microsoft 7 HP Inc. 17 Alphabet 8 Panasonic 18 Foxconn 9 Facebook 19 Samsung Electronics 10 Intel 20 Apple What is the vision of technology companies ? The innovation vision is a bunch of rules planned to empower NEC to target new types of social worth creation, perceive the innovation patterns, portray the advances and society of things to come, and make remarkable advances dependent on this vision. To empower individuals and organizations all through the world to understand their maximum capacity.” “To put together the world’s data and make it all around available and valuable. How information technology works ? Most current organizations rely intensely upon data frameworks, from worker email to information base administration to web-based business Sites. Data innovation, or IT, portrays any innovation that powers or empowers the capacity, handling and data stream inside an association. The data innovation (IT) area is contained organizations that produce programming, equipment or semiconductor gear, or organizations that give web or related administrations. With the degree of innovative reconciliation into virtually every feature of life and business, it’s basic fundamental for organizations, enormous or little, to have a Data Innovation (IT) office to deal with every one of the mechanical issues that emerge. IT office is answerable for giving the framework to this robotization. IT office empowers the organization’s workers to convey, team up and computerize routine assignments, and by and large furnish groups with the usefulness they need to play out their obligations. Framework alludes to the equipment parts, the organization, the hardware and any remaining gear important to make an IT framework work as per the setup necessities and framework “size” of the organization. It alludes to making and keeping up with functional applications; creating, getting, and putting away electronic information that has a place with the association; and aiding the utilization of programming and information the executives to all useful spaces of the association. Where to invest in technology ? Investment in technology Data innovation can help development in organizations, everything being equal. Interest in new innovation can bring about decreased expenses and further developed productivity. Stay up with the latest with the most recent improvements in data frameworks and correspondences innovation and pick the ones that are appropriate for you. Motive of investing Investing is an approach to possibly build the measure of cash you have. The objective is to purchase monetary items, additionally called investments, and ideally sell them at a more exorbitant cost than what you at first paid. Ventures are things like stocks, securities, shared assets and The best tech stocks 1) Dell Technologies Inc.: Dell Technologies designs, develops and manufactures a range of integrated technology solutions, products, and services. Its products include desktops, workstations, notebooks, displays, projectors, and more. The company also offers multi-cloud, big data, and storage solutions to meet a wide variety of its customers’ needs.15 Dell serves 98% of Fortune 500 companies and employs a sales force of more than 40,000 people. 2) Arrow Electronics Inc.: Arrow Electronics is a global provider of electronic components, computer products, and enterprise computing solutions to OEMs, contract manufacturers, and other commercial customers. The company distributes batteries, displays, sensors, memory products, and a wide range of other electronic components.7 It also offers related services, solutions, and software.8 The company has roughly 20,000 employees worldwide and more than 180,000 customers in technology manufacturing and other industries. 3) “Amazon.com: is the leading online retailer and the leading provider of cloud computing infrastructure. Founder Jeff Bezos stepped down in July, opening a new chapter for the dominant tech company.” 4) “Apple: makes the iPhone, the iPad, and Mac computers. Intense customer loyalty ensures plenty of repeat customers, and a growing array of services makes Apple’s ecosystem sticky.” 5): Cisco Systems: is the dominant provider of enterprise networking hardware that forms the backbone of the internet. 6) Facebook: is the largest social media company, with more than 2 billion daily active users across Facebook, Instagram, Messenger, and WhatsApp. The company sees virtual reality as its future. Conclusion Investors can and do adjust their current circumstances by their investment choices, however. the choice to refine the climate presup-poses that the framework for mechanical advancement exists. investors should underestimate that the political economy allows their entrepreneur exercises. In cutting-edge modern economies, potential Investors might campaign for political changes in the idea of government intervention in the economy, yet these progressions by and large are refinements of setting up political economies. It has associated the entire world together. There are a large number of individuals utilized in this industry and It has changed how individuals consume and use Data

No description available

⚡ Explore practical examples of Web Worker patterns to offload heavy tasks and ensure a smooth user interface in your JavaScript applications.

A demo web queue worker pattern implementation

Inter-Window/Worker Communication suite to apply messaging patterns between browser windows/frames/web workers

A pattern lab for the web workers site

Progressive Web App (PWA), Service Worker, PRPL Pattern

Redux with container viewer pattern and web worker example

Demo of a Go web service broken up using CQRS and workers-queues patterns

React TypeScript demo showing singleton pattern isolation in web workers

Crow Webserver with Qt6 & Worker (Inbox-Pattern) for Web-Gallery

Tutorial to create a PWA web app and understand Service Workers and caching patterns