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How to build 99.999% uptime payment systems
In order to keep pace with state-of-the-art, money software must work for all possible databases
Or, as one savage reader of The Playbook puts it, “talent is too thinly spread in fintechs these days to do a roll-your-own at acceptable medium term risk levels”. A mutual exclusion mechanism that’s append-only and server-driven relieves the database from the responsibility of making sure that isolation problems don’t happen. 5 minutes of downtime sounds unfeasible, until you realize, just like Shopify did years ago, that today's Black Friday is tomorrow’s Base Load.
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