YAML

Deep-dive into YAML syntax, anchors, multi-document streams, and tooling.

Apr 16, 2026·9 min read

What is YAML? Syntax, Types, and the Gotchas That Bite Everyone

YAML powers Kubernetes, GitHub Actions, and Docker Compose. Learn the syntax, data types, and the silent errors — including the Norway Problem — that have caused real production incidents.

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Apr 16, 2026·7 min read

YAML Anchors and Aliases — Write DRY Config Files

Anchors (&) and aliases (*) let you define a value once and reuse it throughout a YAML file. The feature that eliminates copy-paste in large Kubernetes and CI configs.

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Apr 16, 2026·8 min read

YAML in GitHub Actions — A Field Guide to Workflow Syntax

GitHub Actions workflows are pure YAML. Understanding YAML deeply makes the difference between flaky CI and reliable automation. A practical guide to common patterns and mistakes.

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Apr 16, 2026·8 min read

Parsing YAML in Python — PyYAML, ruamel.yaml, and Safe Loading

PyYAML is the go-to YAML library in Python, but yaml.load() has a critical security vulnerability. Learn safe loading patterns, round-trip parsing, and when to use ruamel.yaml instead.

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