---
title: Azure App Service Requests in Application Queue | Blue Matador - Troubleshooting
description: How to troubleshoot backed up requests in your Microsoft Azure App Service’s application queue.
image: https://www.bluematador.com/hubfs/logo-1.png
---

 Docs

# Azure App Service Requests in Application Queue

If your Azure App Service is receiving more requests than it can handle, requests will begin to get backed up in the application queue. Blue Matador automatically watches the **RequestsInApplicationQueue** metric and creates events when this situation occurs.

## Effects

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When requests get backed up in your App Service, you’ll start to see timeouts in other parts of your application. You may also see adverse effects on the performance of your app service as it struggles to keep up with requests.

 

## Fixes

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The root causes for high number of requests in the application queue are likely related to your application, but the troubleshooting steps are the same for most applications:

1. Temporarily [scale out](https://docs.microsoft.com/en-us/azure/azure-monitor/platform/autoscale-get-started#disable-autoscale-and-manually-scale-your-instances) (or [scale up](https://docs.microsoft.com/en-us/azure/app-service/manage-scale-up) if you are at the limits of your pricing tier) while you fix the issue.
2. [Enable](https://docs.microsoft.com/en-us/azure/app-service/troubleshoot-diagnostic-logs) and check the diagnostic logs for your app service. Look for endpoints that are being called more frequently than usual, or that are taking a long time to respond.

## Resources

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- [Enable diagnostics logging for apps in Azure App Service](https://docs.microsoft.com/en-us/azure/app-service/troubleshoot-diagnostic-logs) (Microsoft Azure Documentation)
- [Troubleshooting Azure App Service Apps Using Web Server Logs](https://techcommunity.microsoft.com/t5/Azure-App-Service/Troubleshooting-Azure-App-Service-Apps-Using-Web-Server-Logs/ba-p/392329) (Microsoft Tech Community)
- [Supported metrics for Application Gateway](https://docs.microsoft.com/en-us/azure/azure-monitor/platform/metrics-supported#microsoftwebsites-excluding-functions) (Microsoft Azure Documentation)