API Gateway Pattern in Java Microservices (Spring Cloud Gateway, Routing & Security)
Modern Java microservices architectures often involve dozens of distributed services communicating through APIs. Managing authentication, routing, monitoring, and security separately for each service quickly becomes difficult. 👉 This is where the API Gateway Pattern becomes essential. An API Gateway acts as a single-entry point for all client requests and provides: Centralized routing Authentication & authorization Rate limiting Request filtering Monitoring & logging This guide explains how to implement the API Gateway pattern using Spring Cloud Gateway in Java microservices environments. đź–Ľ️ API Gateway Architecture 🎯 Why API Gateway is Important Without an API Gateway: Clients call multiple services directly Security becomes fragmented Routing logic is duplicated Monitoring becomes complex 👉 API Gateway centralizes these responsibilities. Benefits: Better security Simplified client communication Centralized monitoring Improved scalability 🔑 Core Responsibilities of...