Solved: How do you prevent FE regressions?

🚀 Executive Summary TL;DR: Frontend regressions often stem from aggressive browser caching of unversioned assets, causing users to see outdated content. The most effective solution involves automated asset hashing during the build process, coupled with strategic server-side caching headers to ensure ‘index.html’ is always fresh while hashed assets are cached indefinitely for performance. 🎯 Key Takeaways Browser caching of assets with identical filenames, despite content changes, is the primary cause of frontend regressions. Automated asset hashing (e.g., ‘main.a8b4f9c1.js’) via build tools like Webpack or Vite is the standard, reliable method to guarantee browsers download new versions. A robust caching strategy requires server-side configuration (e.g., Nginx) to aggressively cache hashed assets while explicitly preventing caching of the ‘index.html’ entry point. Prevent painful frontend regressions caused by aggressive browser caching. A senior DevOps engineer shares battle-tested str