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You notice your Angular app using SSR is not showing updated data after navigation. What is a likely cause?

medium📝 Debug Q14 of 15
Angular - Server-Side Rendering
You notice your Angular app using SSR is not showing updated data after navigation. What is a likely cause?
AAngular Universal is not installed
BThe server is sending blank HTML pages
CThe browser does not support JavaScript
DThe app is not hydrating the server-rendered HTML properly on the client
Step-by-Step Solution
Solution:

  1. Step 1: Understand hydration in SSR

    Hydration is the process where client JavaScript takes over server-rendered HTML to make it interactive and update data.

  2. Step 2: Identify cause of stale data

    If hydration fails, the page looks static and does not update after navigation, causing stale data display.

  3. Final Answer:

    The app is not hydrating the server-rendered HTML properly on the client -> Option D

  4. Quick Check:

    Hydration failure causes stale data in SSR [OK]
Quick Trick: Hydration failure causes stale SSR pages [OK]
Common Mistakes:
  • Assuming server sends blank pages
  • Blaming browser JavaScript support without checking hydration
  • Thinking Angular Universal missing causes this specific issue

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