[tailhook]

Do you have any links on the "dependency-graph dataflow system" that you are talking about? Sounds a little bit similar to what I'm trying to do, except at higher scale.

[nostrademons]

The specific systems I'm thinking of were Google-internal, but there's a close public analogue with Guice & Dagger:

https://github.com/google/guice

https://github.com/square/dagger

Imagine injecting Futures into your code. Now imagine injecting them, but having the Provider record a lot of metadata about who you were calling, how you were calling it, how long it took, whether an error occurred, letting an SRE turn off the call, etc.

[acconsta]

I've seen an OCaml library, but I'm searching for solutions in other languages:

https://blogs.janestreet.com/introducing-incremental/

http://www.umut-acar.org/self-adjusting-computation