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.

4 — Auto vs. Manual Instrumentation

Four ways a span gets created — hand-written, framework-level auto-instrumentation, eBPF, and service-mesh sidecar capture — and the trade-off between code changes and business context each one makes.

5 — Label & Attribute Schema Design

Cardinality budget, naming conventions, and the high-churn label traps that turn a cheap metric into a production incident — the design discipline for the labels semantic conventions don't already cover for you.

1 — OpenTelemetry SDKs & Semantic Conventions

OpenTelemetry is a specification and an API/SDK, not a backend — the pieces that make it up, and the semantic-convention vocabulary that lets two unrelated teams' telemetry be queried the same way.

1 — Instrumenting Web APIs

Covers span and metric conventions for HTTP/gRPC API instrumentation — route templating, status code buckets, and latency histograms.