archwiki: Do page view caching[1] with nginx for improved performance (!846) · Merge requests · Arch Linux / infrastructure

Merged Kristian Klausen requested to merge klausenbusk/infrastructure:archwiki-cache-at-nginx into master 8 months ago

Aug 11, 2024

archwiki: Improve cache hit ratio by using background updating and cache locking · bd916696

Kristian Klausen authored 8 months ago

This should not cause any issues as MediaWiki should purge stale content
from the cache (by sending a PURGE request to the nginx-cache-purge
service).

Verified

bd916696

archwiki: Do page view caching[1] with nginx for improved performance · dfbbafa2

Kristian Klausen authored 8 months ago

We have used MediaWiki's file cache[2] until now, but recently the wiki
has been hammered with requests from some stupid Chinese bots/crawlers.

Caching at the web server level is faster as we avoid the PHP overhead
and it seems to make a difference (performance wise), especially when
the bots/crawlers are hitting us.

This is usual done with Varnish[3], but I went with a simple Python
service (30 LOC) for handling the PURGE requests as that is much simpler
thn adding Varnish to our stack.

[1] https://www.mediawiki.org/w/index.php?title=Manual:Performance_tuning&oldid=6670283#Page_view_caching
[2] https://www.mediawiki.org/wiki/Manual:File_cache
[3] https://www.mediawiki.org/wiki/Manual:Varnish_caching

Fix #315

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dfbbafa2

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archwiki: Do page view caching[1] with nginx for improved performance

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