https://bugzilla.wikimedia.org/show_bug.cgi?id=49419
Web browser: ---
Bug ID: 49419
Summary: ipblocks query from EditPage unconditionally goes to
master
Product: MediaWiki
Version: 1.22-git
Hardware: All
OS: All
Status: NEW
Keywords: platformeng
Severity: normal
Priority: Unprioritized
Component: Page editing
Assignee: [email protected]
Reporter: [email protected]
Classification: Unclassified
Mobile Platform: ---
While it's important that IP blocks on page save are fetched from the master DB
(c.f. bug 41702), it would be nice if IP blocks on edit page views were fetched
from the slave. This was the scheme I suggested in the context of bug 1138, and
it was briefly implemented, but the optimisation was later accidentally lost
during refactoring.
Current profiling indicates that this query is about 10% of wall clock time
spent doing master queries, possibly plus connection overhead if this is the
only master query being done on edit.
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