What is Cache?
Cache Memory
A cache is a storage system that temporarily holds data to speed up access to frequently used information. It reduces the time it takes to retrieve data from the main storage or server by keeping copies closer to where they are needed.
Overview
A cache works by storing copies of data that are often accessed, allowing for quicker retrieval. When a user requests information, the system first checks the cache to see if the data is already there. If it is, the system can deliver it much faster than if it had to fetch it from a slower source, like a database or a remote server. In web development, caching plays a crucial role in improving website performance. For example, when you visit a website, your browser may store images, scripts, and other resources in its cache. The next time you visit the same site, your browser can load these resources from the cache instead of downloading them again, resulting in a faster loading time and a better user experience. Caching also helps reduce the load on servers by minimizing the number of requests they handle. This is especially important for popular websites that receive a lot of traffic. By serving cached content, servers can focus on processing new requests and delivering fresh content, which ultimately enhances the overall efficiency of web applications.