GitHub Actions Caching — From 3 Minutes to 18 Seconds

How actions/cache works under the hood, cache keys and restore-keys fallback strategy, and the cache invalidation problem GitHub Actions elegantly solves. 📂 Module 3: Building Real CI Pipelines 🎓 Course: GitHub Actions: Zero to Hero ⏱ Timestamps: 00:00 Introduction 00:30 Why caching matters (3 min → 18 sec demo) 02:00 actions/cache — how it works 03:30 Cache keys — crafting the right key 05:00 restore-keys fallback strategy 06:30 Cache invalidation 07:30 npm caching pattern #githubactions #caching #performance #cicd #actionscache #devops