Not downvoting, but those two links don't really describe much - though they are part of the story. For other readers, here's a general takeaway - - Arrow Pla

Not downvoting, but those two links don't really describe much - though they are part of the story. For other readers, here's a general takeaway - - Arrow Plasma was deprecated, and is now no longer even present in the Arrow project. - The maintainers behind the Plasma store in Arrow forked it, into Ray. Plasma is still alive and well in Ray - and it still uses the Arrow IPC format, among other things. In addition to the links from the above poster, read the original blog post on Plasma [0], and the section on Ray on [1]. I use Ray quite a bit. For more lightweight stuff, or for more low-level control, I use Arrow Flight [2] (and [3] for Python examples) [0] https://ray-project.github.io/2017/08/08/plasma-in-memory-object-store.html https://ray-project.github.io/2017/08/08/plasma-in-memory-ob... [1] https://arrow.apache.org/powered_by/ https://arrow.apache.org/powered_by/ [2] https://arrow.apache.org/docs/python/flight.html https://arrow.apache.org/docs/python/flight.html [3] https://arrow.apache.org/cookbook/py/flight.html https://arrow.apache.org/cookbook/py/flight.html