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Troubleshooting Azure Redis connectivity

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    Name
    Alexander Arana Escobedo
    Twitter

Intro

We noticed that our application could not connect to our Azure Redis instance for about 10 minutes during the night. I found the solution in the Microsoft documentation, and I want to give a heads-up that these docs can be a great companion when you need to troubleshoot your Azure resources. 🧐

I found this section in the documentation:

redis-troubleshooting-connectivity

After troubleshooting this for a while, we suspected that it might be an unplanned maintenance event from Microsoft but could not confirm it. After reading the documentation, we were able to confirm this by checking the metrics:

redis-troubleshooting-connectivity

Filter on Error and ErrorType = Failover:

redis-troubleshooting-connectivity

The metrics showed that we had 8 instances of ErrorType = Failover during the exact time when our application started to fail. It was a relief to finally connect the dots! 🤩

I hope this guide helps you out! If you have any questions, don't hesitate to reach out.

References:

Connectivity troubleshooting

Alexander Arana.E

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