# SQS Queue Amazon Simple Queue Service (Amazon SQS) offers a secure, durable, and available hosted queue to integrate and decouple distributed software systems and components. It provides a generic web service API that you can access using any programming language that AWS SDK supports. The following Amazon SQS Queue types are supported. * **Standard Queues** - Standard queues support a nearly unlimited number of API calls per second, per API action (`SendMessage`, `ReceiveMessage`, or `DeleteMessage`). Standard queues support at-least-once message delivery. However, occasionally (because of the highly distributed architecture that allows nearly unlimited throughput), more than one copy of a message might be delivered out of order. Standard queues provide best-effort ordering which ensures that messages are generally delivered in the same order as they're sent. * **FIFO Queues** - FIFO queues have all the capabilities of a Standard queue, but are designed to enhance messaging between applications when the order of operations and events is critical, or where duplicates cannot be tolerated. ## Creating SQS queues ### Creating a standard SQS queue 1. in the DuploCloud portal, navigate to **Cloud Services** -> **App Integration**. 2. Click the **SQS** tab. 3. Click **Add**. The **Create a SQS Queue** pane displays.

The Create a SQS Queue pane

4. Enter an SQS Queue **Name**. 5. Select **Standard** from the **Queue Type** list box. 6. Enter **Message Retention Period (in Seconds)**. For example, **345600** seconds in the example equates to four days. 7. Enter the **Visibility Timeout** in seconds. In the example, we specify **30** seconds. 8. Optionally, select **Configure Dead Letter Queue**, select the **Target SQS dead letter queue**, and specify the number of **Message process attempts before dead letter queue**. 9. Click **Create**. ### Creating a SQS FIFO queue 1. In the DuploCloud portal, navigate to **Cloud Services** -> **App Integration**. 2. Click the **SQS** tab. 3. Click **Add**. The **Create a SQS Queue** pane displays.

The Create a SQS Queue pane

4. Enter an SQS Queue **Name**. 5. Select **FIFO** from the **Queue Type** list box. 6. Enter **Message Retention Period (in Seconds)**. For example, **345600** seconds in the example below equates to four days. 7. Enter the **Visibility Timeout** in seconds. In the example below, we specify **30** seconds. 8. Optionally, select **Content-based deduplication**. Selecting this option indicates that message deduplication IDs are used to ensure duplicate messages are not sent. If a message deduplication ID is sent successfully, any messages sent with the same message ID aren't delivered within five minutes. 9. Select either **Queue** or **Message group** from the **Deduplication scope** list box: * **Queue:** Deduplication processing occurs at the Queue level. The **FIFO throughput limit** is automatically set to **Per queue**. * **Message group:** Deduplication processing occurs at the [Message group ](https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/using-messagegroupid-property.html)level, using Message group IDs. In the **FIFO throughput limit** list box, select **Per queue** or **Per message group ID** to specify whether the FIFO Throughput Quota applies to the entire **FIFO Queue** or individually to each **Message Group**. 10. Optionally, select **Configure Dead Letter Queue**, select the **Target SQS dead letter queue**, and specify the number of **Message process attempts before dead letter queue**. 11. Click **Create**. ## Dead Letter Queue (DLQ) and redrive policy You can configure a Dead Letter Queue (DLQ) and a redrive policy to manage messages that cannot be processed successfully. A DLQ stores failed messages, preventing them from blocking the normal operation of the queue. The redrive policy allows you to define how many times a message can be retried before it is moved to the DLQ. This feature enhances the reliability and manageability of your message processing system. You can configure a Dead Letter Queue and redrive policy either when creating a new SQS or SQS FIFO queue or by editing an existing queue: To **configure DLQ and redrive policy during queue creation**, follow the instructions above to create an [SQS queue](#creating-sqs-queues) or [SQS FIFO queue](#creating-fifo-queues). Select **Configure Dead Letter Queue**, select the **Target SQS dead letter queue**, and specify the number of **Message process attempts before dead letter queue**. To **edit an existing queue** and configure the DLQ and redrive policy, use the procedure provided below. ### Configuring a DQL and redrive policy 1. Select the name of the Tenant that contains the SQS or SQS FIFO queue from the **Tenant** list box. 2. Navigate to **Cloud Services** -> **App Integration**. 3. Select the **SQS** tab. 4. Select the name of the SQS or SQS FIFO queue from the **NAME** column. 5. Click on the **Actions** menu, and select **Edit**. The **Edit SQS** **Queue** or **Edit** **SQS FIFO Queue** pane displays. 6. Enable **Configure Dead Letter Queue**. 7. Select the **Target SQS dead letter queue**. 8. Specify the number of **Message process attempts before dead letter queue**. 9. Click **Update**. The DQL and redrive settings for the SQS or SQS FIFO queue are configured. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.duplocloud.com/docs/automation-platform/overview/aws-services/sqs-queue.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.