Everything you need to know about HTTP Caching

Web Cache or HTTP Cache allows you to store a copy of a resource and serve it back when requested. Serving the item from the cache, instead of re-downloading it from the origin server eases the load on the server, improves performance, and reduces the bandwidth usage on the server. In this lesson, we look at the different types of caches, we look at the different HTTP cache headers such as expires, pragma, and cache-control. Also, we understand how the cache validation works and what are the different caching strategies.

RFC on HTTP Caching:
https://tools.ietf.org/html/rfc7234

RFC on HTTP Conditional Requests:
https://tools.ietf.org/html/rfc7232

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