The issue is: A grpc client is taking too much time on its first call. And after debugging, it was the domain name resolution that is taking that amount of time.
Is there any way to warm up the grpc clients just after the application starts?
Update: The request eventually succeeds, but the first call takes so much time, the consecutive calls are much faster.
And Im using this library https://github.com/yidongnan/grpc-spring-boot-starter