When websites and apps are stuck or stuck under high traffic, there are two possibilities:
1. A high concurrency problem occurs, the server is not optimized for configuration, or if there is more high concurrency, clustering will not occur without cluster processing
2. Static resources and dynamic code are not separated, and they are placed in the same project or server, which will cause page resources to be stuck. You need to do dynamic and static separation. For example, use oss to store static files. Use cdn to accelerate, and use Nginx to achieve dynamic and static separation. Yes, reduce the load of tomcat
