squid: Squid (Web Proxy Cache) squid: squid: Squid is a high-performance proxy caching server for Web clients, squid: supporting FTP, gopher, and HTTP data objects. Unlike traditional squid: caching software, Squid handles all requests in a single, squid: non-blocking, I/O-driven process. Squid keeps meta data squid: and especially hot objects cached in RAM, caches DNS lookups, squid: supports non-blocking DNS lookups, and implements squid: negative caching of failed requests. squid: squid: