[Koha-bugs] [Bug 16166] New: Improve L1 cache performance

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=16166

            Bug ID: 16166
           Summary: Improve L1 cache performance
 Change sponsored?: ---
           Product: Koha
           Version: master
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P5 - low
         Component: Architecture, internals, and plumbing
          Assignee: gmcharlt at gmail.com
          Reporter: abl at biblos.pk.edu.pl
        QA Contact: testopia at bugs.koha-community.org

Bug 16044 introduced two-level caching mechanism to Koha::Cache. By default,
get_from_cache() returns a deep copy of the data structures stored in L1 cache
(aka "safe mode"). For extremely big and/or complex data structures (like MARC
framework hash-of-hashes-of-hashes returned by GetMarcStructure() ),
deep-cloning is currently very sub-optimal (i.e., 2-3x slower after Bug 16044);
this patch addresses that particular issue.

See also: Bug 16044 comments #18 - #23

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