Experiencing Data Latency for Session Data Type – 5/11 – Resolved

Final Update: Tuesday, 5/12/2015 02:03 UTC

We’ve confirmed that all systems are back to normal with no customer impact as of 5/12, 1:45 UTC. Our logs show the incident started on 5/11, 23:25 UTC and that during the 2 hours that it took to resolve the issue customers experienced latency of their Session Data above SLA.

Root Cause: The failure was due to a bad node in our backend..
Chance of Reoccurrence: Medium
Lessons Learned: We have gathered data and our looking into was to permanently fix this issue so that it does not occur again.
Incident Timeline: 2 Hours & 20 minutes -  5/11, 23:25 UTC through 5/12, 1:45 UTC

We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.

-Application Insights Service Delivery Team

Update: Tuesday, 5/12/2015 00:39 UTC

Root cause has been isolated to a bad node in our backend which was impacting Session data. To address this issue we restarted the impacted node. Session Data Type is now working as expected. Some customers may experience latency above SLA and we estimate 2 hours before latency is within SLA.

Next Update: Before 02:39 UTC

-Application Insights Service Delivery Team

Initial Update: Monday, 5/11/2015 23:58 UTC

We are aware of issues within Application Insights and are actively investigating. Some customers may experience Data Latency. The following data types are affected: Session.

Next Update: Before 5/12/2015 00:58 UTC

We are working hard to resolve this issue and apologize for any inconvenience.

-Application Insights Service Delivery Team


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