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monitoring.md

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Monitoring & Logging

The application uses CloudWatch for monitoring and logging. The current setup includes alarming to the slcak channel #covid-tracker-alarms via SNS+Lambda.

Monitoring

The following alarms are in place right now:

  • 5xx errors > 25 for 1 datapoint within 1 minute
  • 4XX errors > 25 for 1 datapoint within 1 minute
  • p95 api latency > 500ms for 1 datapoint within 1 minute

Alarms are enabled just for production.

Logs

Multiple log groups can be queried via Logs Insights slecting the proper log groups.

  • Find all responses with specific status code
# API and PUSH service
# searching for all 5xx responses
fields @timestamp, @message
| filter res.statusCode like /5\d{2}/
| sort @timestamp desc
| limit 20

# API Gateway Access Logs
# searching for all 5xx responses
fields @timestamp, @message
| filter @message like /\"\s5\d{2}\s/
| sort @timestamp desc
| limit 20