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Java-Interview-Advanced/docs/distributed-system/service-register-discovery.md

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zk，一般来说还好，服务注册和发现，都是很快的

eureka，必须优化参数

eureka.server.responseCacheUpdateIntervalMs = 3000 eureka.client.registryFetchIntervalSeconds = 30000

eureka.client.leaseRenewalIntervalInSeconds = 30 eureka.server.evictionIntervalTimerInMs = 60000 eureka.instance.leaseExpirationDurationInSeconds = 90

服务发现的时效性变成秒级，几秒钟可以感知服务的上线和下线