Page MenuHomePhabricator

Elevated 503 responses between 2020-03-15 and 2020-03-19
Closed, DeclinedPublic

Description

Between 2020-03-15 and 2020-03-19, there appear to have been a substantially elevated number of requests returning 503, particularly among those coming in via esams or eqsin. This seems to have been affecting users on weak mobile connections during user testing of a recent Android feature. Do we have any idea what was causing this?

Screenshot from 2020-03-19 17-32-13.png (799×1 px, 135 KB)

Screenshot from 2020-03-19 17-32-49.png (363×803 px, 31 KB)

https://logstash.wikimedia.org/goto/61ae12fb0cdadeffa92f4d3c86e8f4dd

Event Timeline

Restricted Application added a subscriber: Aklapper. · View Herald Transcript

Actually, this appears nearly identical even without filtering for POST or api.php.

Mholloway renamed this task from Increase in 503 responses to POST reqs to api.php since 2020-03-15 to Increase in 503 responses since 2020-03-15.Mar 19 2020, 9:57 PM
Mholloway updated the task description. (Show Details)
Mholloway renamed this task from Increase in 503 responses since 2020-03-15 to Elevated 503 responses between 2020-03-15 and 2020-03-19.Mar 20 2020, 5:07 PM
Mholloway updated the task description. (Show Details)

Checked again just now and it looks like the issue was transitory. Might as well close this.