Observability Engineering

A book-shaped table of contents for observability engineering: foundations through architecture, metrics, logging, tracing, profiling, OpenTelemetry, instrumentation, Kubernetes/cloud, data platforms, visualization, alerting, SRE integration, cost, security, platform engineering, AI-driven operations, and MAANG interview preparation — cross-linking existing prometheus/grafana-cloud/kubernetes/sre/platform-engineering notes instead of duplicating them.

3 — RED Method

Covers Rate/Errors/Duration as the request-driven-service adaptation of the golden signals.

4 — USE Method

Covers Utilization/Saturation/Errors as the resource-driven adaptation of the golden signals, for infrastructure rather than services.

6 — Engineering Dashboards

Covers designing debugging-oriented dashboards for the on-call engineer, optimized for time-to-first-signal during an incident.

7 — Business Observability

Covers connecting telemetry to business KPIs — conversion, revenue, order completion — so reliability work has a business narrative.