Improved efficiency with caching and memoization
Caching is a great technique used to improve the performance of a wide range of applications. The idea behind caching is to store expensive results in a temporary location, called a cache, that can be located in memory, on disk, or in a remote location.
Web applications make extensive use of caching. In a web application, it is often the case that multiple users request a certain page at the same time. In this case, instead of recomputing the page for each user, the web application can compute it once and serve the user the already rendered page. Ideally, caching also needs a mechanism for invalidation so that if the page needs to be updated, we can recompute it before serving it again. Intelligent caching allows web applications to handle the increasing number of users with fewer resources. Caching can also be done preemptively, such as the later sections of a video getting buffered when watching a video online.
Caching is also...
