Rate Limiter as a Service ⚡

Designed and developed a production-grade Rate Limiter as a Service that protects APIs from abuse, controls request traffic, and ensures fair resource utilization across distributed applications. The platform enables developers to define flexible rate limiting policies, monitor API consumption in real time, and enforce request quotas with minimal latency. Built using a cloud-native architecture, it supports multiple rate limiting algorithms, horizontal scaling, and high availability, making it suitable for modern microservices and enterprise API platforms.

🧑‍💻 What I built: • API key, client, user, and IP-based rate limiting • Configurable rate limiting policies • Sliding Window, Fixed Window, and Token Bucket algorithms • Real-time request monitoring dashboard • Client usage analytics and reporting • Rate limit utilization tracking • Alert management for unusual traffic • REST APIs for policy administration • Secure API authentication and authorization • Responsive web dashboard for monitoring and management

🧠 Engineering Highlights • Built a distributed rate limiting system using Redis for high-speed request tracking • Designed stateless services for horizontal scalability across multiple instances • Optimized request validation with low-latency in-memory operations • Implemented configurable throttling strategies for different client requirements • Secure authentication using Spring Security and JWT • Cloud-ready deployment with Docker and AWS • Fault-tolerant architecture with graceful degradation during high traffic • Production-ready modular architecture following clean coding principles

🛠️ Tech Stack: Java 21 • Spring Boot • Redis • PostgreSQL • REST APIs • Spring Security • JWT • Docker • AWS • OpenAPI/Swagger

Status: Completed ✅