Tuesday April 12, 2022

Issue summary:
From April 12, 2022 at 10:04 PM PDT to April 12, 2022 at 11:59 PM PDT, some users experienced delays with notification delivery, workflows, search, and file uploads, among other features.

We made a change which inadvertently prevented some servers from responding to requests as expected. Requests began accruing, resulting in degraded performance of some features.

Server requests recovered while we investigated, and by 11:04 PM PDT errors subsided, and performance began normalizing. We continued to closely monitor the situation until we had full confidence the issue was resolved.

We're analyzing data from this event, to mitigate recurrence.

4:10 PM PST

Thank you so much for your patience while we worked on these performance issues within Slack. We're happy to inform you these issues are now fixed. We apologize for any inconvenience this has caused you.

2:31 AM PST

Some users may be experiencing performance issues within Slack. We're currently investigating and will be back with an update once we have more information to share.

10:28 PM PST