A Cache is an intelligent data storage layer used in computing, which stores a portion of data—usually of a transient nature—in order to serve up requested information faster than can be retrieved from the original storage location. Caching enables you to access previously retrieved or computed data quickly and efficiently.
A cache is a way of storing information in a computer so that it can be accessed quickly. It is usually stored in special hardware like RAM, which makes it easy and fast to get.
A cache can help make things faster by storing a copy of something so you don’t have to look for it again. It holds only a small amount of information, but what it holds makes it easier to get the things you need quickly.
Here is a list(link) of best web hosting according to Reddit users.