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This is lesson 3 of 4 in this module Course 99% complete

Exploring Logs for Errors and Performance

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We investigate how to accurately count sampled exceptions using sum(itemCount) instead of count(), analyze dependency latency and failures with percentile calculations, and filter on non-standard HTTP status codes like 429 rate limits and 500 system errors to identify performance bottlenecks and error patterns in the telemetry data.