[Koha-bugs] [Bug 29623] Cache circulation rules

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=29623

David Cook <dcook at prosentient.com.au> changed:

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                 CC|                            |dcook at prosentient.com.au

--- Comment #12 from David Cook <dcook at prosentient.com.au> ---
(In reply to Martin Renvoize from comment #9)
> Silly question... why do this just at the request caching level?
> 
> I had a bit of a deep dive into our caching strategies yesterday to get
> myself back up to speed...
> 
> Is it slower to fetch a key from Memcached once (to populate the L1 per
> request) than it is to fetch it from MySQL (to populate the same L1 per
> request)?.. or am I totally misunderstanding our caching code?

The TCP speed is probably comparable although the MySQL is going to be doing
some disk I/O while Memcached is all in memory so in theory Memcached should be
faster, but the difference might be imperceptible with a low load and good
disk*? 


*I have a different app that does a lot of I/O on very bad disks and even doing
simple lookups can be hard when the disks are busy with other tasks

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