Declarative distributed concurrency in Scala

on YouTube ↗42m

" summary

Claims a Scala DSL (chemist/Chemical Machine) expresses unrestricted concurrency as data-carrying “molecules” and reactions so many tasks fit in 15 lines of code, with a simple distributed extension using a DM (distributed molecule) constructor that plugs into Zookeeper. Examples include MapReduce, distributed cache and peer-to-peer chat; semantics are symmetric peer-to-peer (no master), reactions consume inputs atomically and schedule non-deterministically. Single-JVM version runs; full resilient distributed runtime is still in progress.

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" chapters (13)

1. 0:00Introduction to chemical machine
2. 3:11Imperative concurrency problems
3. 7:07Concurrency complexity classes
4. 10:06Dining philosophers example
5. 13:27Actor model comparison
6. 18:20Chemical metaphor explained
7. 24:02Managing complexity with reactions
8. 25:05Throttling example
9. 29:51Petri nets and chemical machine
10. 31:18Distributed programming introduction
11. 33:50Distributed MapReduce demo
12. 34:52Purely functional aspects
13. 36:37Q&A session

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