The cases I've seen deploy relatively full binaries, not patches. And they don't typically even have a REPL, as doing brain surgery on a satellite (that's alre

The cases I've seen deploy relatively full binaries, not patches. And they don't typically even have a REPL, as doing brain surgery on a satellite (that's already in a bad way if you're debugging something) is rarely the best option. So lots of telemetry logging, with 'feature flags' to turn on different logs. Then a change and code push once root cause is found, or a new build with new telemetry gathering if it's still not clear. I'm sure just about every model for code structure has someone doing it though.