Abfragen für die AppRequests-Tabelle

Informationen zur Verwendung dieser Abfragen im Azure-Portal finden Sie im Log Analytics-Lernprogramm. Informationen zur REST-API finden Sie unter "Abfrage".

Response time trend

Chart request duration over the last 12 hours.

// To create an alert for this query, click '+ New alert rule'
AppRequests
| where TimeGenerated > ago(12h) 
| summarize avgRequestDuration=avg(DurationMs) by bin(TimeGenerated, 10m), _ResourceId // use a time grain of 10 minutes
| render timechart

Request count trend

Anzahl der Diagrammanforderungen über den letzten Tag.

// To create an alert for this query, click '+ New alert rule'
AppRequests
| summarize totalCount=sum(ItemCount) by bin(TimeGenerated, 30m), _ResourceId
| render timechart

Response time buckets

Show how many requests are in each performance-bucket.

AppRequests
| summarize requestCount=sum(ItemCount), avgDuration=avg(DurationMs) by PerformanceBucket
| order by avgDuration asc // sort by average request duration
| project-away avgDuration // no need to display avgDuration, we used it only for sorting results
| render barchart

Operations performance

Calculate request count and duration by operations.

// To create an alert for this query, click '+ New alert rule'
AppRequests
| summarize RequestsCount=sum(ItemCount), AverageDuration=avg(DurationMs), percentiles(DurationMs, 50, 95, 99) by OperationName, _ResourceId // you can replace 'OperationName' with another value to segment by a different property
| order by RequestsCount desc // order from highest to lower (descending)

Top 10 countries by traffic

Chart the amount of requests from the top 10 countries.

AppRequests
| summarize CountByCountry=count() by ClientCountryOrRegion
| top 10 by CountByCountry
| render piechart

Failed requests – top 10

What are the 3 slowest pages, and how slow are they?

AppRequests
| where Success == false
| summarize failedCount=sum(ItemCount) by Name
| top 10 by failedCount desc
| render barchart

Failed operations

Calculate how many times operations failed, and how many users were impacted.

// To create an alert for this query, click '+ New alert rule'
AppRequests
| where Success == false
| summarize failedCount=sum(ItemCount), impactedUsers=dcount(UserId) by OperationName, _ResourceId
| order by failedCount desc

Exceptions causing request failures

Find which exceptions led to failed requests in the past hour.

AppRequests
| where TimeGenerated > ago(1h) and Success == false
| join kind= inner (
AppExceptions
| where TimeGenerated > ago(1h)
) on OperationId
| project exceptionType = Type, failedMethod = Method, requestName = Name, requestDuration = DurationMs, _ResourceId