1, the basic parameters configuration list:
| parameter | Defaults | Explanation |
eureka.client.availability-zones |
When the client told what region and availability-zones, run support configuration changes | |
eureka.client.filter-only-up-instances |
true | If the UP filtered InstanceStatus Examples |
eureka.client.region |
us-east-1 | Specify the application instance where the region, AWS datacenters applicable |
eureka.client.register-with-eureka |
true | Whether the registration application examples to Eureka Server |
eureka.client.prefer-same-zone-eureka |
true | Whether precedence in the same zone with the application instance Eureka Server |
eureka.client.on-demand-update-status-change |
true | Whether to update a local instance of real-time triggering ApplicationInfoManager state by the synchronization (restricted flow control is requested) to the Eureka Server |
eureka.instance.metadata-map |
Metadata specifies the application example of the information | |
eureka.instance.prefer-ip-address |
false | Whether preferentially used instead of the IP address host name as an example of the field value hostName |
eureka.instance.lease-expiration-duration-in-seconds |
90 | Eureka Client to specify how often need to send a heartbeat to the Eureka Server to inform the Eureka Server instance still alive |
2, a timing parameter configuration task list
| parameter | Defaults | Explanation |
eureka.client.cache-refresh-executor-thread-pool-size |
2 | Refresh cached thread pool size CacheRefreshThread |
eureka.client.cache-refresh-executor-exponential-back-off-bound |
10 | 调度任务执行超时时下次的调度延时时间 |
eureka.client.heartbeat-executor-thread-pool-size |
2 | 心跳线程HeartbeatThread的线程池大小 |
eureka.client.heartbeat-executor-exponential-back-off-bound |
10 | 调度任务执行超时时下次的调度延时时间 |
eureka.client.registry-fetch-interval-seconds |
30 | CacheRefreshThread线程的调度频率 |
eureka.client.eureka-service-url-poll-interval-seconds |
5*60 | AsyncResolver.updateTask刷新Eureka Server的时间间隔 |
eureka.client.initial-instance-info-replication-interval-seconds |
40 | InstanceInfoReplicator将实例信息表更同步到Eureka Server的初始延时时间 |
eureka.client.instance-info-replication-interval-seconds |
30 | InstanceInfoReplicator将实例信息变更同步到Eureka Server的时间间隔 |
eureka.instance.lease-renewal-interval-in-seconds |
30 | Eureka Client向Eureka Server发送心跳的时间间隔 |
3、Eureka Client http参数配置列表（Eureka Client底层httpClient与Eureka Server通信）
| 参数 | 默认值 | 说明 |
eureka.client.eureka-server-connect-timeout-seconds |
5 | 连接超时时间 |
eureka.client.eureka-server-read-timeout-seconds |
8 | 读超时时间 |
eureka.client.eureka-server-total-connections |
200 | 连接池最大活动连接数（MaxTotal） |
eureka.client.eureka-server-total-connections-per-host |
50 | 每个host能使用的最大连接数（DefaultMaxPerRoute） |
eureka.client.eureka-connection-idle-timeout-seconds |
30 | 连接池中连接的空闲超时时间（connectionIdleTimeout） |