Why the hell does everyone make a banking example when they want to talk about transactions? BANKS RUN ON EVENTUAL CONSISTENCY, PERIOD. Another point worth men

Why the hell does everyone make a banking example when they want to talk about transactions? BANKS RUN ON EVENTUAL CONSISTENCY, PERIOD. Another point worth mentioning is that, single transaction coordinator model is undervalued in community. Majority of systems have the following query pattern (sorted descending): 1. Single key read --> you don't need to contact coordinator 2. Single key write --> you don't need to contact coordinator. OCC with simple version number works here. 3. Multi-key asynchronous write (updating second, third keys using a pub/sub infrastructure) --> you don't need to contact coordinator in this case. 4. True multi-key transactions that should happen atomically --> need to contact coordinator If a single coordinator can process 20-30K/s transactions of category 4, then total throughput of the system would be around 300K queries per second which is sufficient for many workloads.