Why an idempotency key isn’t an idempotency guarantee

InfoWorld
Jul 2, 2026, 5:00 am95 ptsTrending
It started with a one-line message from a finance team on a Tuesday afternoon: A handful of customers had been charged twice that day, and one was disputing a duplicate charge with their bank. I went straight to the monitoring, expecting to find something broken. Instead, everything looked healthy: By the…

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