Introduction
On this post I will try to explain in a few words what's hydration and why is it important.
Server Side Rendering
Server Side Rendering difference it self from Static site generation since "SSR" means per-request rendering as opposed to build-time rendering.
Static rendering happens on the server-side too, but at build-time.
Dynamic rendering on the other hand happens at server-side but at request time.
Hydration
Hydration is what let's the server side rendered component to be able to access client-side interactive tools, such as forms, buttons, etc.
Without the hydration we will just have a plain static page.
Conclusion
Hydration helps the ssr components to interact with the user.
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