Zuul：default could not acquire a
2020-12-02 本文已影响0人
WXL_JIANSHU
1、现象
default could not acquire a semaphore for execution and fallback failed
2、原因
网关默认最大并发量低于客户端并发请求数。
3、解决
ribbon:
ConnectTimeout: 20000000
ReadTimeout: 20000000
MaxTotalHttpConnections: 5000
MaxHttpConnectionsPerHost: 5000
ActiveConnectionsLimit: 4000
hystrix.command.default.execution.isolation.thread.timeoutInMilliseconds: 20000000
zuul.hystrix.command.default.execution.isolation.strategy: SEMAPHORE
zuul.hystrix.command.default.execution.isolation.semaphore.maxConcurrentRequests: 2000
zuul.hystrix.command.default.fallback.isolation.semaphore.maxConcurrentRequests: 2000
zuul.eureka.default.semaphore.maxSemaphores: 30000
#主要是下面的配置
zuul.semaphore.maxSemaphores: 30000
