Hi Owais,

First thing I’d do is identify the exact time windows when the site was down, then check the application logs / App Service logs in the DXP PaaS Portal for those periods - you can select specific period and download logs to check it locally. 

Also check if it lines up with deployments /restarts / high memory/CPU usage or some 5xx errors from you Application.

If this is production, I’d open a support case with Optimizely ASAP as well and send them the outage timestamps, as they can check logs too: support@optimizely.com.

Without the timestamps and logs it’s hard to say much more than that.

Feel free to write back if you have any more questions

Kind Regards,

Wojciech

Hey Owais,

Without logs, honestly, it's just guesswork. You need data first

**Check these:**

1. **DXP Portal > Troubleshoot tab > Application Logs** - quickest place to start.
2. **Azure Portal > Application Insights** - Absolutely helpful. DXP uses App Insights for performance monitoring and exceptions. You can request access to your DXP Azure resources through Optimizely.

Once you have logs, look for app pool recycles, memory spikes, or health check failures. That'll tell you if it's your code or the platform.

Let me know what you find.

How can we monitor high memory/CPU ?

1. Application Insights (this is your best bet)
DXP sets this up automatically through the EPiServer.CloudPlatform.Cms package, so it should already be there - you just need access to it. You'll have to ask Optimizely to grant you permissions for your environment. Once you're in, you can actually see what's going on: CPU usage, memory spikes, request rates, exception counts, and where things are slowing down. If you need to pull data programmatically, you can also request a read-only API key.

2. Azure Portal
You can also get direct access to the underlying Azure resources  - again, just reach out to Optimizely and they'll set that up for you. Once you have access, you can check the App Service metrics directly, like CPU Percentage and Memory Working Set. It's pretty straightforward once you're in there.