"Java" servlet and servlet containers

The servlet is not thread-safe, it runs its service method in a multithreaded manner, one instance can serve multiple requests, and its instances are generally not destroyed, so if there is only one servlet in your project, then the Web container will only create one instance


The most intuitive thing to say about a servlet's container is to store and create something that maintains it, leaving the container, and the servlet cannot do its function. If you want to know what a container is, you can look at how Tomcat works this book, which I am currently reading and writing very well, where I cannot summarize it in words, only if you have seen it before.

"Java" servlet and servlet containers