Caching proxy server accelerates service requests by gathering content saved from a previous request made by the same client or even other clients. The caching proxy to maintain local copies of frequently requested resources, allowing the big stores to significantly reduce their consumption of upstream bandwidth and cost, while significantly increasing performance. Most ISPs and large enterprises have a proxy cache. These machines are built to deliver excellent performance file system (often with RAID and the newspaper) and also contains hot-rodded versions of TCP., Should be noted that the proxy cache was the first type of proxy server.
Another important use of the proxy server is to reduce the cost of hardware. An organization may have many systems on the same network or under the control of a single server, it prohibits the possibility of a single Internet connection for each system. In this case, individual systems can be connected to a proxy server and proxy server connected to the server.