PERF07-BP04 Use monitoring to generate alarm-based notifications
Using the performance-related key performance indicators (KPIs) that you defined, use a monitoring system that generates alarms automatically when these measurements are outside expected boundaries.
Amazon CloudWatch can collect metrics across the resources in your architecture. You can also collect and publish custom metrics to surface business or derived metrics. Use CloudWatch or a third-party monitoring service to set alarms that indicate when thresholds are breached — alarms signal that a metric is outside of the expected boundaries.
Common anti-patterns:
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You rely on staff to watch metrics and react when they see an issue.
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You rely solely on operational runbooks, when serverless workflows could be started to accomplish the same task.
Benefits of establishing this best practice: You can set alarms and automate actions based on either predefined thresholds, or on machine learning algorithms that identify anomalous behavior in your metrics. These same alarms can also start serverless workflows, which can modify performance characteristics of your workload (for example, increasing compute capacity, altering database configuration).
Level of risk exposed if this best practice is not established: Medium
Implementation guidance
Monitor metrics: Amazon CloudWatch can collect metrics across the resources in your architecture. You can collect and publish custom metrics to surface business or derived metrics. Use CloudWatch or a third-party monitoring service to set alarms that indicate when thresholds are exceeded.
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