Assist In Root Cause Analysis | 🏗️ Build A Debugging Dashboard

Short summary

A detailed exam-prep guide for AWS Developer Associate certification covering Domain 4 Task 1: root cause analysis using CloudWatch Logs, Logs Insights, metrics, and CloudTrail. It explains log group/stream/event hierarchy, retention policies, and subscription filters, then provides ready-to-use Logs Insights query patterns for finding errors, counting incidents, detecting slow invocations, parsing custom fields, and identifying cold starts. Lambda-specific REPORT fields like @duration, @billedDuration, @memorySize, and @initDuration are documented with right-sizing analysis examples.

• •Covers CloudWatch Logs Insights query commands: fields, filter, stats, sort, limit, parse, display
• •Provides copy-ready query patterns for error detection, slow invocation analysis, and cold start identification
• •Documents Lambda REPORT fields for memory right-sizing and cost optimization

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