[squid-users] true sizeof squid cache

[Amos Jeffries]

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On 6/11/2014 8:58 p.m., Riccardo Castellani wrote:
> I'm installing new machine as Squid server and I need to understand
> what criteria to estimate the 'cache size', I'm not speaking about
> extra space for swap/temporary files or fragmentation but I'm
> saying about the cache of size that is 3rd cache_dir argument. 
> Server will receive requests from about 2000- 3000 computers. I'd
> like interesting to find documents where shows suggestions to
> assign right size.

Assign the amount of disk you want to use. "right size" all depends on
what your clients patterns of usage are. That varies between networks
and even over time within one network. Also whether you want to focus
on bandwidth reduction or request reduction. Some networks run with no
disk cache, others with Terabytes.

So ... start with a guess that seems reasonable to you (tens of GB? or
hundreds of MB?) and see what happens before tuning it up/down to try
and reach a better hit ratio(s) and longer LRU object timespan.

BTW, the disk cache_dir *is* "swap" file space for Squid. All caching
is temporary files.

Amos

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