Thursday August 7, 2025

We've identified a new incident that is now resolved for all users. Below is a summary:

Between 7:09 AM and 7:28 AM PDT on August 7, 2025, some users may have experienced intermittent errors or latency with several Slack features. This brief issue could have caused delays when performing actions such as searching, messaging, and using administrative tools.

An internal health dashboard alerted us to an unusual spike in traffic to one of our backend caching systems, which caused timeout issues. This primarily impacted users on Enterprise Grid, though a number of non-enterprise users may also have been affected.

To quickly mitigate the impact, we temporarily redirected traffic away from the problematic caching service to allow it to stabilize. We also implemented additional measures to help reduce the impact of future traffic spikes. Once our internal metrics returned to normal, we reverted traffic back to its standard routes. All features are working as expected.

4:36 PM PST