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Maniphest T248132

Elevated 503 responses between 2020-03-15 and 2020-03-19
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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

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Event Timeline

• Mholloway created this task.Mar 19 2020, 9:42 PM
Restricted Application added a project: SRE. · View Herald TranscriptMar 19 2020, 9:42 PM
Restricted Application added a subscriber: Aklapper. · View Herald Transcript
• Mholloway added a comment.Mar 19 2020, 9:55 PM

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 added a parent task: T247989: Usability test “Add custom tags“ (2020-03-18).Mar 20 2020, 4:52 PM
• 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)
LGoto moved this task from Needs triage to Tracking on the Product-Infrastructure-Team-Backlog board.Mar 25 2020, 3:46 PM
• Mholloway updated the task description. (Show Details)Mar 25 2020, 3:51 PM
CDanis added a subscriber: CDanis.Mar 25 2020, 3:53 PM
• ema moved this task from Triage to Radar on the Traffic board.Mar 26 2020, 8:50 AM
• Mholloway closed this task as Declined.Apr 3 2020, 4:55 PM

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

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