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Queries for the AppServiceHTTPLogs table

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For information on using these queries in the Azure portal, see Log Analytics tutorial. For the REST API, see Query.

App Service Health

Time series of App Service Health (over 5 minute intervals).

AppServiceHTTPLogs 
| summarize (count() - countif(ScStatus >= 500)) * 100.0 / count() by bin(TimeGenerated, 5m), _ResourceId
| render timechart

Failure Categorization

Categorize all requests which resulted in 5xx.

AppServiceHTTPLogs 
//| where ResourceId = "MyResourceId" // Uncomment to get results for a specific resource Id when querying over a group of Apps
| where ScStatus >= 500
| reduce by strcat(CsMethod, ':\\', CsUriStem)

Response times of requests

Avg & 90, 95 and 99 percentile response times (in milliseconds) per App Service.

AppServiceHTTPLogs 
| summarize avg(TimeTaken), percentiles(TimeTaken, 90, 95, 99) by _ResourceId

Top 5 Clients

Top 5 clients which are generating traffic.

AppServiceHTTPLogs
| top-nested of _ResourceId by dummy=max(0), // Display results for each resource (App)
  top-nested 5 of UserAgent by count()
| project-away dummy // Remove dummy line from the result set

Top 5 Machines

Top 5 machines which are generating traffic.

AppServiceHTTPLogs
| top-nested of _ResourceId by dummy=max(0), // Display results for each resource (App)
  top-nested 5 of CIp by count()
| project-away dummy // Remove dummy line from the result set