HTTP Header Information

Expected Akamai Headers

When requests pass through Akamai, you should see headers like:

Origin Server Headers

This origin server adds custom headers:

How to View Headers

Using curl:

curl -I https://origin.ztream.se/

Using browser DevTools:

F12 → Network tab → Select request → Headers

🔄 bfcache (Back/Forward Cache) Test

Test if this page is eligible for browser back/forward cache:

Page Load Time:

Page Restored from bfcache: Checking...

Load Counter: 0

Unique Session ID:

How to Test:

  1. Note the "Page Load Time" and "Unique Session ID"
  2. Click the link below to navigate away
  3. Use browser BACK button to return here
  4. Check if Session ID is the same (bfcache hit) or different (full reload)
Navigate to Test Page →
💡 Tip: If Session ID stays the same after using BACK button, bfcache is working! If it changes, the page was fully reloaded.
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