CodeSmart Hoops

Sep 2, 2026 · Cloud Native

Top Spring Cloud OpenFeign Interview Questions and Answers – A Complete Review

This article provides a comprehensive interview‑style walkthrough of Spring Cloud OpenFeign, covering its purpose, advantages over HttpClient and RestTemplate, timeout configuration, fallback vs fallbackFactory, JDK dynamic‑proxy internals, interface requirements, @EnableFeignClients scanning, custom interceptors/encoders/decoders, load‑balancing strategies, common pitfalls, Ribbon vs Spring Cloud LoadBalancer, FeignContext isolation, mandatory name attributes for @PathVariable/@RequestParam, why GET cannot use @RequestBody, and Resilience4j circuit‑breaker integration.