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In this video, I walk through building a fully functional API Gateway from scratch and implementing core production-level features. š Authentication Middleware I implemented a custom authentication mechanism to secure incoming requests. The gateway validates tokens before forwarding requests to downstream services, ensuring only authorized users can access protected resources. ā” Rate Limiting To prevent abuse and ensure system stability, I added rate limiting at the gateway level. This controls the number of requests a client can make within a specified time window, protecting backend services from overload. š Request Routing The gateway intelligently routes incoming requests to the appropriate microservices based on defined rules and endpoints. This centralizes traffic management and simplifies service communication. šļø What This Demonstrates Centralized authentication & security enforcement Traffic control and protection mechanisms Clean service-to-service routing architecture Practical implementation of API Gateway design pattern This project showcases how an API Gateway acts as a single entry point for microservices, improving security, scalability, and maintainability in distributed systems. IRCTC BACKEND PLAYLIST:- https://youtube.com/playlist?list=PLhNPruYZ0mVOF-poB1cDcU8ICktc_ehxs&si=-5U7CVczXaEQiSB- System Design Playlist Hindi:- https://youtube.com/playlist?list=PLhNPruYZ0mVMqoiSKKsW-dJGtHD7vtWjy&si=YTixCUb8zToA474i System Design Playlist (HLD):- https://youtube.com/playlist?list=PLhNPruYZ0mVOMlNhi1XwNmxZ-5RAPFY5F&si=-JTFrRsFEUf82Gp8 #apigateway #nodejs #backenddevelopment #microservices #coding