Observablity

Observability is a measure for how well internal states of a system can be inferred by knowledge of its external outputs.

• Metrics
• Log
• Trace

Metrics are structured, lightweight, and easy to aggregate, providing fast insights into overall performance and quickly alerting you to potential issues

Log provide rich, open-ended context around discrete events, serving as an invaluable resource for debugging, auditing, or arbitrary analysis of usage data

Traces provide end-to-end visibility into real requests, giving you a user-centric view of performance and exposing opportunities for optimization

• Observability
• https://www.vividcortex.com/blog/monitoring-isnt-observability monitoring isn't observability.
• https://www.datadoghq.com/blog/datadog-acquires-logmatic-io/