PERF 11. How do you monitor your databases to ensure performance is as expected?
System performance can degrade over time due to internal or external factors. Monitoring the performance of systems allows you to identify this degradation and remediate the internal or external factors.
Best practices:
 Amazon CloudWatch monitoring Use CloudWatch to monitor databases.
 Third-party monitoring Use third party tools to monitor databases.
 Periodic review Periodically review your monitoring dashboards.
 Alarm-based notifications Plan to have your monitoring systems automatically alert you if metrics are out of safe bounds.
 Trigger-based actions Plan to have alarms cause automated actions to remediate or escalate issues.