Comment by upghost

Oh sorry there are actually huge performance benefits over a services based approach, because you're using the same memory space instead of serializing. This is particularly enormous for ML and data science space because of the work Chris did on hyper efficient mapping zero copy mapping of numpy arrays to tech.ml.dataset tensors.

Not even GraalVM has that! Not yet, anyway.

So there's a lot of easy perfomance synergies over microservices, but I'm the kind of dev where I tend to prioritize fun over performance as long as it's "performant enough". Fortunately, Chris (author of libpython-clj) is an ex-Nvidia performance obsessed dev though so the performance there is on point.