---
title: Queues
description: Specify Queue producers to add to your environment as follows:
image: https://developers.cloudflare.com/dev-products-preview.png
---

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# Queues

* [Queues Reference](https://developers.cloudflare.com/queues/)

## Producers

Specify Queue producers to add to your environment as follows:

JavaScript

```
const mf = new Miniflare({  queueProducers: { MY_QUEUE: "my-queue" },  queueProducers: ["MY_QUEUE"], // If binding and queue names are the same});
```

## Consumers

Specify Workers to consume messages from your Queues as follows:

JavaScript

```
const mf = new Miniflare({  queueConsumers: {    "my-queue": {      maxBatchSize: 5, // default: 5      maxBatchTimeout: 1 /* second(s) */, // default: 1      maxRetries: 2, // default: 2      deadLetterQueue: "my-dead-letter-queue", // default: none    },  },  queueConsumers: ["my-queue"], // If using default consumer options});
```

## Manipulating Outside Workers

For testing, it can be valuable to interact with Queues outside a Worker. You can do this by using the `workers` option to run multiple Workers in the same instance:

JavaScript

```
const mf = new Miniflare({  workers: [    {      name: "a",      modules: true,      script: `      export default {        async fetch(request, env, ctx) {          await env.QUEUE.send(await request.text());        }      }      `,      queueProducers: { QUEUE: "my-queue" },    },    {      name: "b",      modules: true,      script: `      export default {        async queue(batch, env, ctx) {          console.log(batch);        }      }      `,      queueConsumers: { "my-queue": { maxBatchTimeout: 1 } },    },  ],});
const queue = await mf.getQueueProducer("QUEUE", "a"); // Get from worker "a"await queue.send("message"); // Logs "message" 1 second later
```

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