Memcached is a widely used memory caching system, which can boost the speed and the performance of your Internet sites substantially in case they use a database or an API. This is achieved by caching the requests to the database/API and the responses that are delivered, so when a visitor searches for a given product on your Internet site, for instance, the database won’t have to be accessed to return the results and the entire operation will be executed notably faster. That goes for all types of database-driven apps and not only for web stores, since every time a page is visited, the app sends a query to its database to get the data that should be shown. With Memcached, not only will your site open considerably faster, but it will also generate much less server load. If any data in the database is changed, the cached responses will also be updated, so the users won’t see any old information.