[Koha-bugs] [Bug 16044] Define a L1 cache for all objects set in cache

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=16044

--- Comment #23 from Jacek Ablewicz <abl at biblos.pk.edu.pl> ---
(In reply to Jacek Ablewicz from comment #21)

> We'll need to send 'frozen' scalar to memcached somehow packaged (e.g. in [
> ]), to be able to distinguish if it was originally a scalar or not. And the
> complex structures in L2 cache will be double-frozen. But the 2nd freeze
> call (inside Memcached::Fast) should be very cheap - at that stage, this
> wouldn't be a complex data structure any more. Unless I'm very much mistaken
> (see comment #20 item 3) a side effect of this will be a performance gain -
> after this bug, fetching MARC framework with get_from_cache() will take 10
> ms instead of 12.5 ms on average, even with Koha::Cache used entirely in the
> "safe" mode. Win-win situation ;).

Or just append some small flag to the end of each string we store in L2 and
strip it on fetching (0: scalar, 1: structure frozen by Storable() freeze, 2:
structure frozen by Sereal, 4: undef value etc. ;) - I don't think it will
affect performance of caching very small values in any measurable way, and all
that double-frozen madness could be scrached then.

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