(CDNs) distribute gateway caches throughout the Internet (or a part of it) and sell caching to interested Web sites. This tutorial focuses mostly on browser and proxy caches, although some of the information is suitable for those interested in gateway caches as well.
Web caching is one of the most misunderstood technologies on the Internet.
Although technical in nature, it attempts to make the concepts involved understandable and applicable in real-world situations.Web proxy caches work on the same principle, but a much larger scale.Proxies serve hundreds or thousands of users in the same way; large corporations and ISPs often set them up on their firewalls, or as standalone devices (also known as ).; rather than just having one person using them, they usually have a large number of users, and because of this they are very good at reducing latency and network traffic.That’s because popular representations are reused a number of times.