Thanks for the answer. I'm sure there's plenty of complexity I'm missing here. It just seems like having an ID-indexed set of mutexes shouldn't be too hard. Doe

Thanks for the answer. I'm sure there's plenty of complexity I'm missing here. It just seems like having an ID-indexed set of mutexes shouldn't be too hard. Does anyone have a good link discussing the design tradeoffs for a performant upsert?