Kata · Week 3
Four workers, one counter
Before you run anything: what will this program most likely print?
- Introductory
- No AI
- Example case
Topics: concurrency · shared-state
Week 3 of 8
Mental models by hand
Goal: Form the intuitions AI coding skips. No AI allowed this week.
- Live: Pair-solve a concurrency problem by hand, then predict its behavior under contention.
- Async: Three katas: a data-modeling problem, a performance problem with a profiler, and a small state machine.
- Deliverable: Solutions plus a short note on what surprised you.
Cases for this week
Kata · Week 3
How long at 100,000 items?
This takes 0.4 seconds for 10,000 rows. Predict how many seconds it takes for 100,000 rows.
- Intermediate
- No AI
- Example case
Topics: performance · complexity · profiling