[Koha-bugs] [Bug 7248] Caching for services

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

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=7248

--- Comment #37 from Paul Poulain <paul.poulain at biblibre.com> ---
Created attachment 9552
  -->
http://bugs.koha-community.org/bugzilla3/attachment.cgi?id=9552&action=edit
Bug 7248/7249 follow-up: more generic cache handling

This patch update the cache handling to Koha::Cache. So, whatever the cache
mechanism is, Koha caching will work this way:

use Koha::Cache;
my $cache = Koha::Cache->new();

if ($cache) {
    $cache->get_from_cache($identifier)
}
if ($cache) {
$cache->set_in_cache( $identifier,
         $value, $cache_expiry );
}

Test plan:
 * setup a Koha with MEMCACHE activated (MEMCACHED_NAMESPACE is defined in
koha-httpd.conf)
 * setup Koha with DEBUG on (SetEnv DEBUG "1" in koha-httpd.conf)
 * restart Apache
 * load a report $KOHA/cgi-bin/koha/svc/report?id=<ID>

In the Apache logs you will get:
* report: We have and will use a cache at
/home/paul/koha.dev/koha-community/opac/svc/report line 40.
 => confirmation we will use memcache
* execute_query(<A QUERY>)
 => the cache is still empty, we run the SQL

load the report again, you'll get:
* report: We have and will use a cache at
/home/paul/koha.dev/koha-community/opac/svc/report line 40.
 => confirmation we will use memcache
* report: Report <ID> retrieved from cache at
/home/paul/koha.dev/koha-community/opac/svc/report line 43.
 => confirmation we are retrieving the result from the cache

Remove the MEMCACHE env variable, restart Apache, reload the page, you'll get:
* report: No caching system at /home/paul/koha.dev/koha-community/Koha/Cache.pm
line 75.
=> confirmation you have no caching system active

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