# CloudWatch Logs Insights — starter queries (paste into console)
# Context: AWS Console Logs Insights, May 2026. Replace log group names.

# 1) Error rate by Lambda function (last 15 min)
fields @timestamp, @message, @logStream
| filter @message like /ERROR/
| stats count() as errors by @logGroup
| sort errors desc

# 2) Trace ID hunt — requires JSON logs with field traceId (OpenTelemetry export)
fields @timestamp, traceId, message
| filter traceId = "PASTE_TRACE_ID_HERE"
| sort @timestamp asc