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    Go’s way of doing concurrency is nicer and better designed than Node.js, but not state of the art.

    Simon Marlow’s book on Parallel & Concurrent Programming is really interesting even if you don’t use Haskell, covers a lot of paradigms:

    http://chimera.labs.oreilly.com/books/1230000000929

    P&CPIH is one of the few O'Reilly books I’ve been able to read for/with pleasure.