(Today, let's continue with the previous topic to see what effective methods can be used to optimize HTTP performance.In the previous lecture, I mentioned that there are three links that can be optimized in the whole HTTP system, namely server, client and transmission ("first kilometer" and "middle kilometer"). However, because we cannot fully control the client, the actual optimization is usually completed on the server. This can be subdivided into back-end and front-end. The back-end refers to the back-end service of the website. The front-end refers to the HTML, CSS, pictures and other codes and data displayed on the client.)
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