I have Squid Proxy server.. the server is OK, but sometimes, the internet is not accessible ( or very very slow) but most of the time Ok. It is connected to Fiber Optics line. Encountered the issue at least twice a day.
Also, the caching_dir is set to 10000 MB , not sure if it has something do to with it.
Hope you guys can help, which to check. Our Fiber Optics is OK, since I test it while we cannot connect to internet via squid.