---
title: Azure App Service Bytes | Blue Matador - Troubleshooting
description: How to troubleshoot anomalous byte counts sent to and from your Microsoft Azure App Service.
image: https://www.bluematador.com/hubfs/logo-1.png
---

 Docs

# Azure App Service Bytes

When Azure App Services are running normally, you can generally expect a steady stream of requests to your application. Blue Matador can determine when this is not the case and creates events when the number of bytes sent and received are anomalous.

## Bytes Received

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Blue Matador automatically monitors the **BytesReceived **metric for anomalies. By itself, bytes received is probably not a cause for concern and is mostly useful for correlation with other issues in your infrastructure. 

If you determine that the difference in bytes received is significant, [enable](https://docs.microsoft.com/en-us/azure/app-service/troubleshoot-diagnostic-logs) and check access logs for your app service. This can help you find which endpoints are being called with a different frequency or that have unexpected request body sizes.

## Bytes Sent

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Blue Matador automatically monitors the **BytesSent **metric for anomalies. By itself, bytes sent is probably not a cause for concern and is mostly useful for correlation with other issues in your infrastructure. 

If you determine that the difference in bytes sent is significant, [enable](https://docs.microsoft.com/en-us/azure/app-service/troubleshoot-diagnostic-logs) and check access logs for your app service. This can help you find which endpoints are being called with a different frequency or that have unexpected response sizes.

## 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)