Detailed explanation of configuration files in Tomcat

I have been using tomcat when I first started working, and I even used this tomcat when I was studying. In retrospect, all of this was knowing but not knowing why. Recently, for well-known reasons, I want to improve myself. So turn these things around and rethink them. Understand why he is. 1. The first thing we need to know is how the tomcat configuration file corresponds to an incoming request. -

There are a few points to note in this picture: 1. The request may come from the browser, other programs, and the jk connection program. This corresponds to the different protocols in tomcat 2. What I am more confused about is that I didn't know what the 8009 was used for. After looking at the picture above, I understand. We use the http https protocol when we develop the web

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