Curated Collection of all Low level design Questions and implementation asked in major Tech companies , Get yourself prepared for the LLD round and ace the interview.

Claude Code best practices -- applied to application design. Interactive HLD/LLD visualization, implementation example. LLM-agnostic, DB-governed, GDPR-ready.

This repo contains LLD of various systems and example implementation of Design Patterns.

Low level implementation of few examples in C++ asked for LLD/machine coding interviews

Code repository for Python implementation of the LLD module

Logger LLD implementation using Chain of Responsibility design pattern

repo to practice LLD/HLD code implementation, sse stuff.

https://github.com/ashishps1/awesome-low-level-design

Implementation of lld Driver API by invoking the binaries

This project is the Low‑Level Design (LLD) of my Trendify Blog (a MERN stack website). It’s a console‑based Java OOP implementation that captures the site’s core structure and behavior before building it in the full MERN stack.

LLD concepts Theory + Implementation repo in Java

An LLD implementation for a payment gateway

System Design - LLD implementation using Python, Java, CPP

Implementation of GOF design patterns and LLD code snippets.

a simple clean example implementation of LLD design patterns

Great selfExplaintory Implementation of Parking Lot LLD Using JAVA SpringBoot with NOTES

The repo contains an LLD interview question and its implementation in c#

This contains the LLD of Splitwise app from thinking to the implementation

A chess game implementation in TypeScript to learn Low Level Design (LLD).

Great selfExplaintory Implementation of Tic Tac Toe LLD Using JAVA SpringBoot with NOTES

A clean Low-Level Design (LLD) implementation of a Parking Lot System using Java, UML diagrams, OOP principles, and design patterns. Includes core components like Vehicle, Ticket, Payment, Parking Floor, Parking Spot, and Entry/Exit flow.

This repository is a comprehensive collection of real-world examples demonstrating the practical applications of Object-Oriented Programming (OOPS), Object-Oriented Design (OOD), and Low-Level Design (LLD) principles and patterns. It aims to bridge the gap between theoretical concepts and their implementation in real-life development scenarios.

This is a TypeScript implementation of a multi-user chat system, built to practice and demonstrate low level design (LLD) skills. It is not a fully functional server — there is no real HTTP server, no database, and no WebSocket layer. The goal here is clean architecture, proper OOP, and well-thought-out authorization logic.

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