Comment by gf000
1 day ago
Google is 100% writing a whole load of new services, and Go is 13 years old (even older within Google), so it surely has had ample opportunities to take.
As for hot swap, I haven't heard it being used for production, that's mostly for faster development cycles - though I could be wrong. Generally it is safer to bring up the new version, direct requests over, and shut down the old version. It's problematic to just hot swap classes, e.g. if you were to add a new field to one of your classes, how would old instances that lack it behave?
HotSwap is really useful to be able to make small adjustments, e.g. to add a logging statement somewhere to test your hypothesis. It's probably not safe to use to change the behaviour significantly, certainly not in production :)