====== Spring HTTP Client Interface ======
  * [[https://docs.spring.io/spring-framework/reference/web/webflux-http-interface-client.html|HTTP Interface Client]]


===== retry =====
  * https://stackoverflow.com/a/74631031
  * [[https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/web/reactive/function/client/ExchangeFilterFunction.html|ExchangeFilterFunction]] 으로 지정한다.

<code java>
 @Bean
  TodoClient todoClient() {
    WebClient webClient =
        WebClient.builder()
            .baseUrl("sampleUrl")
            .filter(retryFilter())
            .build();
    HttpServiceProxyFactory factory =
        HttpServiceProxyFactory.builder(WebClientAdapter.forClient(webClient)).build();
    return factory.createClient(TodoClient.class);
  }

  
private ExchangeFilterFunction retryFilter() {
     return (request, next) ->
         next.exchange(request)
             .retryWhen(
                         Retry.fixedDelay(3, Duration.ofSeconds(30))
             .doAfterRetry(retrySignal -> log.warn("Retrying"));
      };
  }
</code>

===== 참조 =====
  * [[https://www.baeldung.com/spring-6-http-interface|HTTP Interface in Spring 6 | Baeldung]]