A Squid proxy is a popular open-source web proxy and caching server supporting HTTP, HTTPS, and FTP that can be used to improve the performance of web servers and reduce bandwidth usage. Squid is typically used in a corporate or organizational setting to provide users with faster access to internet resources while also reducing the load on network resources.
Squid acts as an intermediary between clients and servers, caching frequently accessed web pages and other content, and serving them to clients directly from the cache rather than retrieving them from the origin server each time they are requested. This can significantly reduce the time it takes for clients to access content, particularly for frequently accessed resources.
Squid also supports various authentication mechanisms, access controls, and other advanced features, making it a flexible and customizable solution for organizations with specific needs. It can be used on various operating systems, including Linux, Windows, and macOS.