> ## Documentation Index
> Fetch the complete documentation index at: https://mintlify.com/alchemy-run/alchemy/llms.txt
> Use this file to discover all available pages before exploring further.

# Queue

> API reference for Cloudflare Queue resource

# Queue

Creates and manages Cloudflare Queues for reliable message delivery between workers.

## Props

<ParamField path="name" type="string">
  Name of the queue.

  <Expandable title="default" defaultOpen>
    `${app}-${stage}-${id}`
  </Expandable>
</ParamField>

<ParamField path="settings" type="QueueSettings">
  Settings for the queue.

  <Expandable title="properties">
    <ParamField path="deliveryDelay" type="number">
      Delay in seconds before message delivery. Queue will not deliver messages until this time has elapsed.
    </ParamField>

    <ParamField path="deliveryPaused" type="boolean">
      Whether delivery is paused. If true, the queue will not deliver messages to consumers.
    </ParamField>

    <ParamField path="messageRetentionPeriod" type="number">
      Period in seconds to retain messages. Messages will be automatically deleted after this time.
    </ParamField>
  </Expandable>
</ParamField>

<ParamField path="dlq" type="string | Queue">
  Dead letter queue for failed messages.

  ```ts theme={null}
  const dlq = await Queue("failed-tasks");
  const queue = await Queue("tasks", {
    dlq: dlq
  });
  ```
</ParamField>

<ParamField path="delete" type="boolean" default="true">
  Whether to delete the queue when the resource is removed from Alchemy.
</ParamField>

<ParamField path="adopt" type="boolean" default="false">
  Whether to adopt an existing queue with the same name if it exists.
</ParamField>

## Output

<ResponseField name="id" type="string">
  The unique ID of the queue.
</ResponseField>

<ResponseField name="name" type="string">
  The name of the queue.
</ResponseField>

<ResponseField name="createdOn" type="string">
  Time when the queue was created.
</ResponseField>

<ResponseField name="modifiedOn" type="string">
  Modified timestamp.
</ResponseField>

<ResponseField name="type" type="queue">
  Type identifier for the binding.
</ResponseField>

## Examples

### Basic Queue

```ts theme={null}
const queue = await Queue("tasks", {
  name: "task-queue"
});
```

### Queue with Custom Settings

```ts theme={null}
const queue = await Queue("delayed-queue", {
  name: "delayed-queue",
  settings: {
    deliveryDelay: 30,
    messageRetentionPeriod: 86400
  }
});
```

### Queue with Dead Letter Queue

```ts theme={null}
const dlq = await Queue("dlq-queue");

const mainQueue = await Queue("main-queue", {
  dlq: dlq
});
```

### Queue Producer and Consumer

```ts theme={null}
const processingQueue = await Queue("processing-queue");

const worker = await Worker("processor", {
  entrypoint: "./src/processor.ts",
  bindings: {
    QUEUE: processingQueue
  },
  eventSources: [{
    queue: processingQueue,
    settings: {
      batchSize: 25,
      maxConcurrency: 5,
      maxRetries: 3,
      maxWaitTimeMs: 1500,
      retryDelay: 45,
      deadLetterQueue: "failed-processing"
    }
  }]
});
```