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Thanks that's what I was looking for!
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I've setup squid as a proxy server on one of my servers. It has about 120 IP addresses on it. When it is handling a lot of connections, cpu/mem usage goes up quite high (as one would expect). I also believe I/O is hit hard. I've had to increase the number of file descriptors at one point.<br />
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My question is, by default, is squid caching all of the requests users are making through these IP addresses? If so, is this necessary? Is there a way to disable it? <br />
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The entire goal of this squid installation is simply to provide a proxy/tunnel to users, not improve website performance or anything. Maybe I am wrong but isn't writing to cache files unnecessary and just wasting resources? <br />
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I just want to clarify this before I end up having to buy a new server.
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I've setup squid as a proxy server on one of my servers. It has about 120 IP addresses on it. When it is handling a lot of connections, cpu/mem usage goes up quite high (as one would expect). I also believe I/O is hit hard. I've had to increase the number of file descriptors at one point.

My question is, by default, is squid caching all of the requests users are making through these IP addresses? If so, is this necessary? Is there a way to disable it? 

The entire goal of this squid installation is simply to provide a proxy/tunnel to users, not improve website performance or anything. Maybe I am wrong but isn't writing to cache files unnecessary and just wasting resources? 

I just want to clarify this before I end up having to buy a new server.

Squid proxy server (performance / configuration)

The variety of Linux distributions creates myriad issues relating to configuration and operations when computers are networked, not the least of which is the use of various network management applications, some of which are included with specific distributions, while others are standalone applications.

Linux Networking

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.