At its core, observability in software systems is about having a clear lens through which the state and health of a system can be understood. It encompasses three fundamental pillars: logs, metrics, and traces, each playing a unique role in painting a comprehensive picture of a system's performance.
Logs provide a chronological record of events, essential for debugging and understanding incidents. Metrics offer numerical data points representing system performance, aiding in health assessment and trend identification. Traces reveal request flow in distributed systems, helping locate bottlenecks and failures.
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