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This video is really cool. I’ve been following dataflow approaches for a while, including some of Frank McSherry’s (usually enjoyable) articles. None of the com

This video is really cool. I’ve been following dataflow approaches for a while, including some of Frank McSherry’s (usually enjoyable) articles. None of the comments mention https://materialize.io https://materialize.io so I may as well (an open source commercial offering based off these concepts). Watching this explanation I’m slightly curious whether things like materialize and noria are a bit limited in that this could be a paradigm for an actual functional reactive programming language rather than specifically a “data” thing. It appears to have the structure of nested contexts (loops, scopes, etc) advocated by structured programming (ie “goto considered harmful”). It can reliably calculate an answer at each point in time for each state of input, concurrently and with parallelism. Even if there are multiple inputs with their own notion of time (not covered in the video). That’s, like, the holy grail of PLT these days, isn’t it? Or am I missing something?

pritambaral 7y ago
> ... an open source commercial offering ... I just looked at their license[1] and it doesn't appear to be open source at the moment. https://github.com/MaterializeInc/materialize/blob/master/LICENSE https://github.com/MaterializeInc/materialize/blob/master/LI...
- benesch 7y ago
  Yes, we consider ourselves an “open core” company. Timely and differential, the core compute engine, are fully open source projects, but the Materialize layer atop is licensed under the “Business Source License” (BSL). We think the BSL strikes a good balance between giving back to the community—four years after every release, the code is automatically relicensed under Apache 2—and ensuring we can build a viable business. And you’re free to use Materialize for any purpose in a non-distributed (i.e., single node) deployment without paying for an enterprise license.
  - pritambaral 7y ago
    Wasn't complaining against your model; just correcting the parent's usage of the terms.

pritambaral 7y ago

> ... an open source commercial offering ... I just looked at their license[1] and it doesn't appear to be open source at the moment. https://github.com/MaterializeInc/materialize/blob/master/LICENSE https://github.com/MaterializeInc/materialize/blob/master/LI...

benesch 7y ago
Yes, we consider ourselves an “open core” company. Timely and differential, the core compute engine, are fully open source projects, but the Materialize layer atop is licensed under the “Business Source License” (BSL). We think the BSL strikes a good balance between giving back to the community—four years after every release, the code is automatically relicensed under Apache 2—and ensuring we can build a viable business. And you’re free to use Materialize for any purpose in a non-distributed (i.e., single node) deployment without paying for an enterprise license.
- pritambaral 7y ago
  Wasn't complaining against your model; just correcting the parent's usage of the terms.