proxy server is a server thing that acts as an intermediary for http request from people internet browsers looking for resources from other servers or computers. A people internet browsers connects to the proxy server, requesting some service, such as a file, web page, resource available from a different server and the proxy server evaluates the application request as a way to simplify and control its complexity.Meanwhile, most proxy servers are web proxies, facilitating access to web content on the world and most of tem giving your anonymity. A caching proxy server accelerates service requests by receiving content saved from a previous request made by the same people. Caching proxies keep local copies of frequently requested files, allowing big networks to reduce their traffic bandwidth usage and costs, while extremely increasing performance. Some can hide your IP address, also they can provide secure things, for example: to hide you from some tracking ads networks with boring ads. Also, with russian_federation proxy servers you can bypass some youtube, facebook, video and many other social network limitations, unlock youtube video for your country, bypassing it.