2

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();
    }


4

1 回答 1