API Proxy — Complete Guide to Request Forwarding

In this tutorial, you will learn about API Proxy. We cover key concepts, practical examples, and best practices to help you master this topic.

An API proxy forwards client requests to backend services, adding authentication, Rate Limiting, logging, Caching, and transformation without modifying the target service itself.

What You'll Learn

• How API proxies differ from API gateways
• Building a reverse proxy for API forwarding
• Adding cross-cutting concerns via proxy

Why It Matters

API proxies decouple clients from backend services, allowing you to add security, monitoring, and routing logic without changing backend code.

Real-World Use

Durga Antivirus Pro uses an API proxy to forward threat intelligence requests to legacy SOAP backends, translating REST requests to SOAP and adding authentication headers that the legacy system requires.

What's Next

Explore API gateway patterns for advanced traffic management, or learn about API security for proxy-level protection.