Mastering Spring Boot 4 Declarative HTTP Client: A Complete Practical Guide
This article walks through Spring Boot 4's built‑in HTTP Interface, showing how to replace RestTemplate/WebClient with a type‑safe, annotation‑driven RestClient, covering Maven setup, DTO and interface definitions, configuration, error handling, header injection, timeout control, reactive alternatives, design principles, and a side‑by‑side comparison with the legacy approach.
