Do you know about caching?explain?

In order to reuse particular assets repeatedly without requiring a full round trip request to the server, caching is the act of keeping them locally. JavaScript, HTML, CSS, and images can all be cached.

A cache, or temporary storage site, is where copies of files are kept so they can be retrieved more rapidly. Technically speaking, a cache is any site that temporarily stores copies of files or other data, but the phrase is frequently associated with Internet technologies. While CDN servers cache content to reduce latency and DNS servers store DNS records for faster lookups, web browsers cache HTML files, JavaScript, and pictures to speed up website loading.