Idempotency: Protect Yourself Against Multiple Event Processing Mistakes

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Hi, I'm James Eastham and in this video you'll learn about the crucial concept of idempotency in event-driven systems to prevent issues arising from receiving the same event multiple times.

You'll learn how to manage and verify idempotency using both unique identifiers and business logic. By using a payment processing scenario, I'll illustrates how to store processed event information in caches or databases to avoid duplicate handling

The video provides a detailed example of implementing idempotency with .NET and emphasizes the importance of being equipped to handle duplicate events to ensure system reliability.

00:00 Introduction and Payment Glitch Scenario
00:25 Understanding Event-Driven Architectures
01:21 The Importance of Idempotency
03:24 Implementing Idempotency with Unique Identifiers
06:00 Practical Example: Payment Service in .NET
11:20 Conclusion and Best Practices

Code - https://github.com/jeastham1993/PlantBasedPizza/tree/azure