intermediate · ~10 min

Many hands

The shop needs thumbnails for 12 batches of product photos. Each batch takes about 8 seconds on one worker — so one at a time is a minute and a half.

completions is how many successful runs the Job needs; parallelism is how many pods it runs at once. thumbnails.yaml is ready in your directory, set to one at a time.

Objectives

Run the thumbnails Job to 12 completions
With at least 4 pods at a time
Bonus: Finish all 12 within 40 seconds

Best on a computer with a keyboard. It works on a phone, with shortcuts under the terminal.