System Design · Middle · Question 28 of 75
What's wrong with fully hydrating a large content page?
- ✓Correct answer: The browser executes JS even for static text
- 2Hydration deletes the HTML received from the server
- 3Hydration is only available for pages under 100 KB
Explanation
Until the JS runs, the page is visible but unresponsive - INP and TBT suffer. Solutions: Server Components (static parts aren't hydrated), islands, lazy client components, content-visibility.