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This article introduces you what is the HTTP cache mechanism, the content is very detailed, interested friends can refer to, hope to be helpful to you.

Buffering mechanisms are ubiquitous, including client cache, server cache, proxy server cache and so on. Browser caching acts as a cache in HTTP. As an important method to optimize web performance, HTTP cache is very important for friends in network development. The HTTP cache is organized around the following:

1. The rules of caching: HTTP's cache belongs to the client cache. Here's why it belongs to the client cache.

Therefore, there is a cache database in the browser for storing static files, which does not change very often (images, css,js, etc.). Caching is divided into mandatory caching and negotiated caching. Next, I will describe each of these two caches in detail.

2. Force caching: when the requested data is already in the database.

The client gets the data directly from the cache database. If there is no requested data in the cache database, the client can obtain the data from the server.

So much for sharing the caching mechanism of HTTP. I hope the above content can be of some help and learn more knowledge. If you think the article is good, you can share it for more people to see.

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