[squid-users] true sizeof squid cache

[Riccardo Castellani]

Does it exist guideline to tune up/down cache_dir size?
What do you think about use of ram disk as cache_dir vs hard disk ?

On 06 Nov 2014, at 10:16, Amos Jeffries <squid3 at treenet.co.nz> wrote:

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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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