Learn what hydration means, and how Gatsby makes use of React’s hydration features to build blazing fast websites and applications.
With client-side rendering, most actions trigger local DOM updates instead of network requests. Clicking a navigation link builds the requested page on the client instead of requesting it from the server. Because they make fewer network requests, applications rendered in the browser provide a blazing-fast user experience — after the initial download.
Hydration lets us take a hybrid approach.
Note: You’ll sometimes see developers use re-hydration used instead of hydration. They’re interchangeable.