com.netflix.zuul.exception.ZuulException：转发错误

Question

我想使用Eureka服务器通过Zuul网关运行多个并发请求。

执行此操作时，我遇到此错误内部服务器错误500.欢迎任何解决方案或建议。

Caused by: com.netflix.hystrix.exception.HystrixRuntimeException: YYYYY could not acquire a semaphore for execution and no fallback available.

Caused by: java.lang.RuntimeException: could not acquire a semaphore for execution

Answer 1

尝试从hystrix配置中增加executionIsolationSemaphoreMaxConcurrentRequests，如下所示：

    public HystrixCommandInstance() {
      super(Setter.withGroupKey(HystrixCommandGroupKey.Factory.asKey("SomeGroupName"))
      .andCommandPropertiesDefaults(HystrixCommandProperties.Setter()
             .withExecutionIsolationSemaphoreMaxConcurrentRequests(200)));}