Cache: Everything You Need to Know
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Cache is a hardware or software component that stores data so that future requests for that data can be served faster. It can be handled at the server, at the client and in between. Cache systems have the option to “purge” their cache, either per item or everything at the same time. Caching can be in multiple layers, such as Opcode Caching and Memcached. The many methods and layers of cache are commonly used in PHP web development. For example Nginx and Redis Cache are common systems used for the most common.