STABLE PUBLIC PREVIEW

Warm a cold cache without a thundering herd

After a deploy the cache is empty and every request misses. Design a warming path that keeps origin load bounded, then explain how readers stay correct when warming dies halfway.

Difficulty: Intermediate
Time: 45 min

Stage 01

Frame the failure

After a deploy the cache is empty and every request misses. Describe what fails first and how you would detect it.

What to demonstrate: Can you name the failure mode before proposing a fix?

Stage 02

Warm without a herd

Design a warming path that keeps origin load bounded while serving real traffic.

What to demonstrate: Can you bound concurrency and still make progress?

Stage 03

Recover safely

A warming job dies halfway. Explain how readers stay correct and how warming resumes.

What to demonstrate: Can you separate correctness from performance?

Written response workspaceChecking account access…

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