The article provides a comprehensive overview of long-term caching strategies for frontend build artifacts. It details how filename hashing (e.g., content hashes) ensures cache busting when files change, while module federation enables independent deployment of micro-frontends with shared dependencies. The piece also explores CDN cache invalidation strategies, such as versioned URLs and cache tags, to maximize cache hit rates. Practical considerations include balancing hash length for uniqueness vs. URL length, handling shared libraries across federated modules, and coordinating cache purges across multiple CDN edges. For teams building large-scale web applications, these strategies are critical for reducing load times and bandwidth costs. The content is evergreen and applicable to modern frontend stacks like Webpack, Vite, and Module Federation.
This article presents a thorough engineering guide to long-term caching strategies for frontend build outputs, covering filename hashing techniques, module federation for micro-frontend architectures, and CDN cache coordination. It is a valuable resource for teams aiming to optimize load performance and cache hit rates in production.