Functional streams for factorians

on YouTube ↗27m

" summary

Implements a mini Factorio factory using FS2 (Functional Streams for Scala) and a bounded Queue via Cats Effect, composing drill -> belt -> furnace -> assembler streams. Shows concrete tuning: prefetchN = 50 input buffers, chunkN(3) to batch three cables, two furnaces per miner because smelting takes ~2× mining time, first electronic circuit appears around 8s. Demonstrates merge, parZip, evalMap, concurrent background streams, and a real deadlock case when downstream .take(2) starves a queue — code runs but needs careful buffer management.

AI-written summary · about

" chapters (8)

1. 0:00Introduction and me
2. 2:53Back pressure in Factorio
3. 3:14Simple mining drill demo
4. 6:01Smelting iron ore
5. 9:56Transfer belt with queues
6. 14:06Assembly machines
7. 19:43Splitters and filtering
8. 24:54Conclusion and resources

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