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EurekaClientConfigurationRefresher & DiscoveryClient#refreshInstanceInfo concurrent execution

5

**Describe the bug** As we know, when `RefreshScopeRefreshedEvent` is published, service instances perform deregister and register actions. refer: [EurekaDiscoveryClientConfiguration](https://github.com/spring-cloud/spring-cloud-netflix/blob/main/spring-cloud-netflix-eureka-client/src/main/java/org/springframework/cloud/netflix/eureka/EurekaDiscoveryClientConfiguration.java#L86-97) deregister and register will call `ApplicationInfoManager#setInstanceStatus` to modify `InstanceStatus`. ```java protected...

Please answer some questions before submitting your issue. Thanks! ### Which version of XXL-JOB do you using? ### Expected behavior [数据库初始化脚本](https://github.com/xuxueli/xxl-job/blob/master/doc/db/tables_xxl_job.sql#L38) 表`xxl_job_log` 字段`job_id` 应新增索引，避免全表扫描 ### Actual behavior ### Steps to...