Visualized multi-threaded simulators in Ruby
summary
A visualized petrol‑station simulator implemented in MRI Ruby uses a custom shared timer plus mutexes, condition variables and queues to run pumps as consumer threads while a car spawner lazily yields arrivals from a YAML scenario. It runs many simulations in parallel (tested >10) without one thread per car, compares setups like 3 pumps @3s/L versus 6 pumps @6s/L and picks the highest‑revenue scenario (example: simulation 8 wins), and renders results live with d3.js and ASCII art.
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chapters (9)
- 0:00Introduction
- 5:31Petrol station scenarios
- 7:15Logger and timer
- 11:36YAML configuration
- 13:42Car spawner and queue
- 16:33Ruby thread conditions
- 18:57Lessons learned
- 21:47Future ideas
- 23:18Resources
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