As a first-class language feature this goes back at least to 1985 and Linda https://en.wikipedia.org/wiki/Linda_(coordination_language) https://en.wikipedia.org

As a first-class language feature this goes back at least to 1985 and Linda https://en.wikipedia.org/wiki/Linda_(coordination_language) https://en.wikipedia.org/wiki/Linda_(coordination_language) and tuplespaces. (You'd know about Linda already if you'd read Concepts, Techniques, and Models of Computer Programming. Don't delay, read CTM today: https://www.info.ucl.ac.be/~pvr/paradigms.html https://www.info.ucl.ac.be/~pvr/paradigms.html ) And here's a Martin Fowler talk about the practise of implementing it informally as a pattern or framework: https://www.youtube.com/watch?v=STKCRSUsyP0 https://www.youtube.com/watch?v=STKCRSUsyP0