See also "Eventual Business Consistency"[0] by Kent Beck. Really good read. > Double-dated data—we tag each bit of business data with 2 dates: > * The date on

See also "Eventual Business Consistency"[0] by Kent Beck. Really good read. > Double-dated data—we tag each bit of business data with 2 dates: > * The date on which the data changed out in the real world, the effective date. > * The date on which the system found out about the change, the posting date. > Using effective & posting dates together we can record all the strange twists & turns of feeding data into a system. [0] https://tidyfirst.substack.com/p/eventual-business-consistency https://tidyfirst.substack.com/p/eventual-business-consisten...