Here's why implementing a Payment System can be so hard

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Designing and building an in-house Payment System is not trivial. In includes many components that communicate asynchronously in an event-driven manner, usually with Kafka, meaning there are many different ways the system can malfunction. We're going to cover the major components of a system, what reconciliation is, how to process slow requests with long-polling and web hooks, as well as talk about idempotency.

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