Feign Client Interceptor Deep Dive | Modify Headers, URI & Body in Spring Boot
Feign Client Interceptor Deep Dive | Modify Headers, URI & Body in Spring Boot
Welcome to Backend Verse! 🌿
In this video, we’ll go deep into Feign Client Interceptors and learn how to dynamically modify requests before they’re sent — headers, query params, URIs, and even request bodies! 🚀
Ever wondered:
👉 How to log every API request made by Feign Client?
👉 How to modify headers or add authentication tokens dynamically?
👉 How to change query params, request methods, or even the request body before execution?
That’s exactly what you’ll learn in this video! 🔥
📝 What You’ll Learn
📌 Logging each API call using custom Feign Interceptor
⚡ Mutating request headers dynamically
🔑 Modifying query params before sending request
🏷️ Changing request method (GET → POST) dynamically
💡 URI rewriting and request body mutation
🧠 Real-world debugging use case with Feign Interceptors
🎯 Why Watch This Video?
✔️ Master Feign Interceptors at an advanced level
✔️ Understand how to intercept, inspect, and mutate outgoing requests
✔️ Perfect for secure, dynamic, and monitored microservices
✔️ Must-watch for backend developers working with Spring Cloud OpenFeign
🧩 Tech Stack
Java 21
Spring Boot 3
Gradle
Intellij
Feign Client
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🔗 GitHub Code
👉 https://github.com/backendverse/sprin...
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