Slab incident
Increased occurrence of "Still trying to save..." message while editing posts
Slab experienced a minor incident on January 8, 2024, lasting 10d 20h. The incident has been resolved; the full update timeline is below.
Update timeline
- investigating Jan 08, 2024, 11:08 PM UTC
The post should eventually save and there is no system degradation or increased failure to save. We are investigating why our application client is not attempting to save immediately or sooner when it could and should..
- identified Jan 12, 2024, 09:39 PM UTC
A potential root cause has been identified..
- identified Jan 14, 2024, 04:16 PM UTC
A potential fix has been implemented..
- identified Jan 15, 2024, 02:37 AM UTC
The potential fix has been tested on our staging environment, and the fix is now awaiting deployment..
- monitoring Jan 16, 2024, 02:28 AM UTC
The fix has been deployed and we are currently monitoring the result..
- monitoring Jan 17, 2024, 06:32 PM UTC
We have observed the expected subsequent drop in the slow save warning events and will continue monitoring this and related metrics..
- resolved Jan 19, 2024, 07:42 PM UTC
Relevant metrics have remained normal for three full days and we consider the incident resolved. The root cause was a recent minor version library upgrade that included performance enhancements, but also an unexpected side effect on how we handled reconnections, particularly when a computer wakes up from sleep. Our team was able to adjust for the upgrade change, so reconnections would again be immediate, resulting in faster post saving like before..