Paths/Backend Engineer/HTTP & Networking / Headers & Caching
Set the Cache Headers
A response with the right cache headers is served without touching your server. Write the policy for the orders API.
Validator
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IDLE — checks run live as you type commands; submit when done
01Requirements
live checks- File ~/http/cache-headers.yaml exists○
- The file states the Cache-Control policy○
- The file states the ETag and the validation rule○
02Walkthrough
1 of 3 revealed- 01
Write the cache policy
A short max-age with must-revalidate keeps the list fresh while still absorbing the repeat traffic.
echo 'cache:\n Cache-Control: public, max-age=60, must-revalidate\n Vary: Accept, Authorization' > ~/http/cache-headers.yaml - 2 locked · each failed submit reveals one
03Stuck?
0 of 3 revealedTake a hint without losing the lab — each one points at the thing to look at, not at the answer.
04AI Tutor
guides, never solvesTell me what you're stuck on — I'll nudge, not solve. Which requirement are you looking at?
04Notebook
saved locally in this browserlearner@lab — ubuntu:24.04
Session is disposable
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