You are monitoring the health and performance of an Azure web app by using Azure Application Insights. You need to ensure that an alert is sent when the web app has a sudden rise in performance issues and failures. What should you use?
Smart detection automatically warns you of potential performance problems and failure anomalies in your web application. It performs proactive analysis of the telemetry that your app sends to Application Insights. If there is a sudden rise in failure rates, or abnormal patterns in client or server performance, you get an alert. This feature needs no configuration. It operates if your application sends enough telemetry.
A: Smart detection
Smart detection detects and notifies about various issues, such as:
Smart detection - Failure Anomalies. We use machine learning to set the expected rate of failed requests for your app, correlating with load, and other factors. Notifies if the failure rate goes outside the expected envelope.
Smart detection - Performance Anomalies. Notifies if response time of an operation or dependency duration is slowing down, compared to historical baseline. It also notifies if we identify an anomalous pattern in response time, or page load time.
General degradations and issues, like Trace degradation, Memory leak, Abnormal rise in Exception volume and Security anti-patterns.
https://docs.microsoft.com/en-us/azure/azure-monitor/app/proactive-diagnostics
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