Changes / Front / Delays in sending and receiving Gmail messages [gmail]

Front: Major incident: Delays in sending and receiving Gmail messages [gmail]

Summary

Front reported a major incident delaying Gmail message sending and receiving, initially in us-west-2 and later across multiple regions. It started at 2024-09-13 15:38 UTC and resolved at 2024-09-13 19:25 UTC, lasting 3 h 47 min. Front suspected Gmail rate limiting, drained the message backlog, and reported all channels back to normal.

Machine-written from the diff below (Sol; type: incident degradation). Check the diff before relying on it.

Major incidentLabel: degradation (model (Jev), 77%)Changed Detected Source: stspg.io (opens in new tab)

What changed

AddedTitle#1
Before: not present
After: Delays in sending and receiving Gmail messages [gmail]
AddedImpact#2
Before: not present
After: major
AddedStatus#3
Before: not present
After: resolved
AddedStart time#4
Before: not present
After: 2024-09-13 15:38 UTC
AddedResolved time#5
Before: not present
After: 2024-09-13 19:25 UTC
AddedAffected components#6
Before: not present
After: Gmail
AddedUpdateinvestigating#7
Before: not present
After: We're observing problems sending and receiving some messages on Gmail channels in the us-west-2 region. We're working on identifying the root cause.
AddedUpdateinvestigating#8
Before: not present
After: We are continuing to investigate this issue, which seems to be related to Gmail's rate limiting mechanisms. We're seeing some impact across multiple regions.
AddedUpdateinvestigating#9
Before: not present
After: We are continuing to see message delays, and are rescaling our internal queues globally to help mitigate the issue.
AddedUpdateinvestigating#10
Before: not present
After: We are beginning to see a gradual increase in successful deliveries. We are continuing to monitor the situation, as well as replaying deliveries that have been delayed by the original incident.
AddedUpdateidentified#11
Before: not present
After: We are on the recovery path now and are focused on draining the backlog of delayed messages.
AddedUpdatemonitoring#12
Before: not present
After: We are continuing to drain the backlog and will be doing so for the next couple hours.
AddedUpdatemonitoring#13
Before: not present
After: Continuing to drain the backlog
AddedUpdatemonitoring#14
Before: not present
After: Some channels are still experiencing delays as we import the backlog of messages received while Gmail was experiencing an outage
AddedUpdateresolved#15
Before: not present
After: All channels should be back to normal now.

First version of this incident archived by Rewindex. View the live incident (opens in new tab).

History of this incident

When (UTC)ChangeKind
Major incident: Delays in sending and receiving Gmail messages [gmail] (this change)
Front reported a major incident delaying Gmail message sending and receiving, initially in us-west-2 and later across multiple regions. It started at 2024-09-13 15:38 UTC and resolved at 2024-09-13 19:25 UTC, lasting 3 h 47 min. Front suspected Gmail rate limiting, drained the message backlog, and reported all channels back to normal.
Major incident

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