Experiencing Data Latency for Many Data Types – 01/04 – Resolved


Final Update: Monday, 04 January 2016 13:16 UTC

We've confirmed that all systems are back to normal with no customer impact as of 1/4, 13:16 UTC. Our logs show the incident started on 1/4, 07:35 UTC and that during the 5 hours & 40 minutes that it took to resolve the issue small percentage of customers experienced data latency and data gaps.
  • Root Cause: The failure was due to dependent service of Processing Infrastructure.
  • Lessons Learned: Additional Telemetry data has been collected to investigate this issue further and drive improvements.
  • Incident Timeline: 5 Hours & 40 minutes - 1/4, 07:35 UTC through 1/4, 13:16 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: Monday, 04 January 2016 10:46 UTC

Root cause has been isolated to an issue with the backend processing infrastructure, where some systems stopped processing incoming data. Processing is now working as expected. Some customers may continue to experience data latency and we estimate 4 hours before all latency is addressed.
  • Work Around: None
  • Next Update: Before 01/04 15:00 UTC

-Application Insights Service Delivery Team


Initial Update: Monday, 04 January 2016 07:35 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: Availability,Customer Event,Dependency,Exception,Metric,Page Load,Page View,Performance Counter,Request,Trace.

  • Work Around: None
  • Next Update: Before 01/04 12:00 UTC

We are working hard to resolve this issue and apologize for any inconvenience.
-Application Insights Service Delivery Team


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