Handling duplicate requests in APIs, especially in payment systems, is a headache. NestJS RedisX offers a neat way to tackle this with its Idempotency Plugin. Let’s dig into how you can set this up.

Getting Started with Idempotency

First things first, install the necessary packages. You'll need both the core and idempotency packages of NestJS RedisX:

npm install @nestjs-redisx/core @nestjs-redisx/idempotency

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Configuring the Module

To make the Idempotency Plugin work its magic, you need to configure it in your main module.…