I think it depends on which level of live patching you're talking about. At Basho, we would load module fixes into Riak instances for customers...I hesitate to

I think it depends on which level of live patching you're talking about. At Basho, we would load module fixes into Riak instances for customers...I hesitate to say "fairly regularly" because it's been long enough and I had limited visibility into it, but it certainly seemed like a routine operation. The full "upgrade the entire application" hot loading definitely requires more planning than most companies will ever be willing to do.