troubleshooting-application-failures
Application Failure Troubleshooting
Overview
Domain expertise for diagnosing application failures through CloudWatch log analysis. Discovers relevant log groups, searches for error patterns and stack traces, performs root cause analysis, and generates prioritized remediation recommendations.
Logs are where the investigation starts, not its boundary. When the logs point at a timeout, throttle, retry or permission problem, read the configuration that sets it, for example the API Gateway integration timeout, the queue's visibility timeout, or the function timeout and event source mapping. Read-only access normally includes these Describe and Get calls.
Troubleshoot a failing application
To diagnose and resolve application failures using CloudWatch logs, follow the procedure exactly. See Application failure troubleshooting procedure.