我对CircuitBreaker
使用感到困惑WebClient
。当依赖服务关闭时,不会执行回退。我需要额外的配置吗?
对于CircuitBreaker
使用RestTemplate
,无需任何进一步配置即可使用。在此处查看我的示例代码:https ://github.com/altfatterz/resilience4j-demo
这是我的例子
@GetMapping("/")
public Mono<String> hello() {
return webClient.build()
.get().uri(uriBuilder -> uriBuilder
.scheme("http")
.host("slow-service").path("/slow")
.build())
.retrieve().bodyToMono(String.class).transform(it -> {
CircuitBreaker cb = circuitBreakerFactory.create("slow");
return cb.run(() -> it, throwable -> Mono.just("fallback"));
});
}
使用以下配置:
@Bean
public Customizer<ReactiveResilience4JCircuitBreakerFactory> defaultCustomizer() {
return factory -> factory.configureDefault(id -> new Resilience4JConfigBuilder(id)
.circuitBreakerConfig(ofDefaults())
.timeLimiterConfig(TimeLimiterConfig.custom().timeoutDuration(Duration.ofSeconds(3)).build()).build());
}
@Bean
@LoadBalanced
public WebClient.Builder webClient() {
return WebClient.builder();
}