Thursday February 21, 2019

Technical Summary:

On February 21st at 4:22PM PST, we deployed a database change, which caused unexpected delays for processes such as notifications and link/image previews in Slack. The problem was identified and corrected, however a backlog of notifications and previews had formed in the meantime. We continued to monitor this backlog after the fix was implemented, and by 5:20PM PST, all functionality returned to normal.

6:52 PM PST

We're seeing that push notifications are arriving on time once again. However, if you're still experiencing troubles, please let us know at feedback@slack.com.

5:26 PM PST

Push notifications may be running slower than expected. We’re investigating and will have an update shortly.

5:15 PM PST