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Kholipha Ahmmad Al-Amin
Kholipha Ahmmad Al-Amin

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Offline-First Web Apps: Advanced Service Worker Caching with Serwist and PWA

Network connectivity can be unpredictable. Progressive Web Apps (PWAs) allow web applications to function seamlessly even when users lose internet access, offering native-like app reliability.

For EquiSaaS Dokkho, we configured Serwist and advanced service worker caching rules to ensure lesson content remains fully accessible offline.

Caching Strategy Architecture

  • Pre-Caching Static App Shells: Essential UI components, icon sets, and core client bundles are pre-cached during service worker installation.
  • Stale-While-Revalidate for Reading Content: Static lesson markdown and diagrams load instantly from the cache while background workers fetch fresh updates.
  • Network-First for Interactive Grading: Critical proof-of-work grading and evaluation endpoints enforce strict network-first handling to guarantee data freshness.
  • Service Worker Cross-World Handling: Ensuring preloaded assets do not trigger cross-world resource mismatch warnings in modern Chromium environments.

Explore our full portfolio of high-performance web systems at https://kholipha-ahmmad-al-amin.me/#projects.

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