# Postmortem: Service disruptions on June 6 & 7 2022

DevFeed: [Postmortem: Service disruptions on June 6 & 7 2022](<https://devfeed.tech/articles/postmortem-service-disruptions-on-june-6-7-2022-10012.md>)

Original publisher: [Read original article](<https://www.figma.com/blog/postmortem-service-disruptions-on-june-6-and-7-2022/>)

Author: Kris Rasmussen; Samir Goel

Published: 2022-06-15T00:00:00Z

Content type: article

Language: en

Sources: [Figma Blog](<https://devfeed.tech/sources/figma-blog.md>)

Topics: [Figma](<https://devfeed.tech/topics/figma.md>), [incident](<https://devfeed.tech/topics/incident.md>), [Monitoring](<https://devfeed.tech/topics/monitoring.md>), [Redis](<https://devfeed.tech/topics/redis.md>), [Amazon Web Services](<https://devfeed.tech/topics/aws.md>), [web applications](<https://devfeed.tech/topics/web-applications.md>), [bug](<https://devfeed.tech/topics/bug.md>), [client](<https://devfeed.tech/topics/client.md>), [API](<https://devfeed.tech/topics/api.md>), [Open Source](<https://devfeed.tech/topics/open-source.md>)

Tags: [api](<https://devfeed.tech/tags/api.md>), [aws](<https://devfeed.tech/tags/aws.md>), [bug](<https://devfeed.tech/tags/bug.md>), [cpu](<https://devfeed.tech/tags/cpu.md>), [figma](<https://devfeed.tech/tags/figma.md>), [incident](<https://devfeed.tech/tags/incident.md>), [monitoring](<https://devfeed.tech/tags/monitoring.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [outage](<https://devfeed.tech/tags/outage.md>), [redis](<https://devfeed.tech/tags/redis.md>), [web](<https://devfeed.tech/tags/web.md>)

## AI overview

Figma details four service disruptions on June 6 and 7, 2022. The incidents were caused by saturation of the Engine CPU on a Cluster-Mode Enabled AWS ElastiCache node, triggered by a rare bug under high Redis Publish / Subscribe load. Figma describes the investigation, resolution, lack of data loss, and measures intended to prevent recurrence.

## Source excerpt

The root cause of our recent service outage and how we resolved it.