The landscape of web development is undergoing a seismic shift. For years, we relied on heavy hydration models that prioritized developer convenience over runtime efficiency. Today, we are observing a "Quantum Leap"—a move away from monolithic bundles toward fine-grained reactivity.
The Death of Hydration
Traditional frameworks like early React or Angular required the browser to download the entire application logic, then "hydrate" the static HTML to make it interactive. This creates a "Total Blocking Time" nightmare on mobile devices.
"Hydration is a tax we've been paying for years without questioning the interest rates."
Enter Resumability
New architectures are introducing the concept of resumability. Instead of starting from scratch, the client "resumes" exactly where the server left off. This results in instant-on interactivity regardless of bundle size.
- Zero-effort code splitting.
- Significant reductions in Time to Interactive (TTI).
- Lower battery consumption on mobile devices.