Yes, DOs have a similar approach. Plane is sort of like DOs but using containers instead of V8 isolates, allowing you to run code that couldn’t run in the browser (either for cpu/memory needs, or because it just won’t compile to JS/wasm).
On the order of a few seconds, which is certainly slower than isolates, but fast enough to e.g. spin up a Jupyter backend in a reasonable amount of time. We're playing around with some ideas to make it even faster, like snapshotting.
