When calling the background interface, the code reported the following error:

Warning: Servlet.service() for servlet [springmvc] in context with path [] threw exception [Request processing failed; nested exception is com.alibaba.dubbo.rpc.RpcException: Failed t
o invoke the method findPage in the service com.service.BrandService. Tried 3 times of the providers [172.16.94.115:20881] (1/1) from the registry 192.168.25.129:2181 on the consum
er 172.16.94.115 using the dubbo version 2.8.4. Last error is: Invoke remote method timeout. method: findPage, provider: dubbo://172.16.94.115:20881/com.service.BrandService?anyhos
t=true&application=tystore-manager-web&check=false&dubbo=2.8.4&generic=false&interface=com.service.BrandService&methods=add,findById,update,findPage,delete,findAll&pid=15116&revisi
on=1.0-SNAPSHOT&side=consumer&timestamp=1624929883885, cause: Waiting server-side response timeout. start time: 2021-06-29 09:25:49.385, end time: 2021-06-29 09:25:50.386, client e
lapsed: 0 ms, server elapsed: 1001 ms, timeout: 1000 ms, request: Request [id=17, version=2.0.0, twoway=true, event=false, broken=false, data=RpcInvocation [methodName=findPage, pa
rameterTypes=[class com.pojo.TbBrand, class java.lang.Integer, class java.lang.Integer], arguments=[com.pojo.TbBrand@7268b2f8, 1, 10], attachments={path=com.service.BrandService, i
nterface=com.service.BrandService, version=0.0.0}]], channel: /172.16.94.115:53263 -> /172.16.94.115:20881] with root cause
com.alibaba.dubbo.remoting.TimeoutException: Waiting server-side response timeout. start time: 2021-06-29 09:25:49.385, end time: 2021-06-29 09:25:50.386, client elapsed: 0 ms, ser
ver elapsed: 1001 ms, timeout: 1000 ms, request: Request [id=17, version=2.0.0, twoway=true, event=false, broken=false, data=RpcInvocation [methodName=findPage, parameterTypes=[cla
ss com.pojo.TbBrand, class java.lang.Integer, class java.lang.Integer], arguments=[com.pojo.TbBrand@7268b2f8, 1, 10], attachments={path=com.service.BrandService, interface=com.serv
ice.BrandService, version=0.0.0}]], channel: /172.16.94.115:53263 -> /172.16.94.115:20881

After checking the following:

1. POJO serializes local IP and service ipdubbo running state, and closes firewall

The final reason is that the server performance is not enough, the response time is long, and the automatic timeout.

@Service(
        interfaceName = "com.service.BrandService",
        timeout = 600000)

After setting the timeout on the service, it will be normal.