Cache

Caching is important because it improves the efficiency of data retrieval, speeding up the performance of systems, websites and applications. Without it, web browsers would be significantly slower, leading to poor user experiences and lost traffic.

Data caching typically works in one of two ways: 1. Memory caches keep data on the machine that a programme or browser is running on locally. The resources that the browser retrieves while it is open are saved either in RAM or on the hard disk. It is quicker to retrieve resources and load pages when the browser uses its cache rather than a remote server. 2. Caching can be performed by a CDN, which involves storing data across several different locations to speed up load times, handle heavy traffic loads and provide extra security. Browser queries are sent to a nearby CDN, which reduces the distance that data must travel and speeds up resource transfer time.