What is caching technologies?

Caching technologies are techniques used to store data in a temporary storage location (cache) so that future requests for that data can be served faster. The cache sits between the data requester (client) and the data source (server or database). When the client requests data, the cache is checked first. If the data is present in the cache (a 'cache hit'), it is served directly from the cache, avoiding the slower process of retrieving it from the original source. If the data is not in the cache (a 'cache miss'), it is fetched from the original source, stored in the cache for future use, and then served to the client. Caching is widely used to improve application performance, reduce latency, and decrease the load on servers and databases. Common caching strategies include browser caching, server-side caching (e.g., using Redis or Memcached), and content delivery networks (CDNs).