tomcat The service is deployed on a single server , Probably 400 People are using , After a while, you won't be able to visit web Interface , The browser interface prompts that the connection is reset , however tomcat There is no error in the log and it is still running normally , netstat -anop|grep 11000 View connections 40 Multiple SYN_RECV State connection , I doubt it. tcp The problem of connection leads to the failure of connection , But you can't reproduce