Spring Boot使用Feign客户端调用远程服务时出现：timed-out and no fallback available，failed and no fallback available的

是熔断器超时导致的，可以修改yml,如下

hystrix: command: default: circuitBreaker: sleepWindowInMilliseconds: 100000 forceClosed: true execution: isolation: thread: timeoutInMilliseconds: 60000 shareSecurityContext: true