npm package: @jackchim/event-bus-redis
Description: Redis Event Bus Module for Medusa
Author: Medusa
Latest version: 2.11.0

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  @jackchim/event-bus-redis
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## Overview

Redis Event Bus module for Medusa. When installed, the events system of Medusa is powered by BullMQ and `io-redis`. BullMQ is responsible for the message queue and worker. `io-redis` is the underlying Redis client, that BullMQ connects to for events storage.

## Getting started

Install the module:

```bash
yarn add @jackchim/event-bus-redis
```

Add the module to your `medusa-config.js`:

```js
module.exports = {
  // ...
  modules: [
    {
      resolve: "@jackchim/event-bus-redis",
      options: {
        redisUrl: "redis:..",
      },
    },
  ],
  // ...
}
```

## Configuration

The module can be configured with the following options:

| Option         | Type      | Description                                                                                                              | Default         |
| -------------- | --------- | ------------------------------------------------------------------------------------------------------------------------ | --------------- |
| `redisUrl`     | `string`  | URL of the Redis instance to connect to.                                                                                 | `events-worker` |
| `queueName`    | `string?` | Name of the BullMQ queue.                                                                                                | `events-queue`  |
| `queueOptions` | `object?` | Options for the BullMQ queue. See BullMQ's [documentation](https://api.docs.bullmq.io/interfaces/QueueOptions.html).     | `{}`            |
| `redisOptions` | `object?` | Options for the Redis instance. See `io-redis`'s [documentation](https://luin.github.io/ioredis/index.html#RedisOptions) | `{}`            |

**Info**: See how the options are applied in the [RedisEventBusService](https://github.com/medusajs/medusa/blob/0c1d1d590463fa30b083c4312293348bdf6596be/packages/event-bus-redis/src/services/event-bus-redis.ts#L52) and [loader](https://github.com/medusajs/medusa/blob/0c1d1d590463fa30b083c4312293348bdf6596be/packages/event-bus-redis/src/loaders/index.ts).

If you do not provide a `redisUrl` in the module options, the server will fail to start.