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Incident documentation/2021-09-18 appserver latency: Difference between revisions

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{{irdoc|status=review}}
#REDIRECT [[Incidents/2021-09-18 appserver latency]]
==Summary==
Slow database queries resulted in php-fpm worker exhaustion.
 
'''Impact''': For about 10 minutes, backends were slow or unavailable for all wikis. This affected logged-in users, most bots/API queries, and some page views from unregistered users (pages that were recently edited or otherwise expired from the CDN cache).
 
'''Documentation''':
 
* Public incident task: [[phab:T291311|T291311]]
* Similar to [[Incident documentation/2021-09-04 appserver latency]] and [[Incident documentation/2021-04-15 appserver latency]].
 
==Actionables==
 
* [[phab:T284419|T284419]] (restricted)

Latest revision as of 17:49, 8 April 2022