The CreateQueue action creates a new queue, or returns the URL of an existing one. When you request CreateQueue, you provide a name for the queue. To successfully create a new queue, you must provide a name that is unique within the scope of your own queues. If you provide the name of an existing queue, a new queue isn't created and an error isn't returned. Instead, the request succeeds and the queue URL for the existing queue is returned. Exception: if you provide a value for DefaultVisibilityTimeout that is different from the value for the existing queue, you receive an error. The ListQueues action returns a list of your queues. The DeleteMessage action unconditionally removes the specified message from the specified queue. Even if the message is locked by another reader due to the visibility timeout setting, it is still deleted from the queue. This action unconditionally deletes the queue specified by the queue URL. Use this operation WITH CARE! The queue is deleted even if it is NOT empty. Gets one or all attributes of a queue. Queues currently have two attributes you can get: ApproximateNumberOfMessages and VisibilityTimeout. Retrieves one or more messages from the specified queue, including the message body and message ID of each message. Messages returned by this action stay in the queue until you delete them. However, once a message is returned to a ReceiveMessage request, it is not returned on subsequent ReceiveMessage requests for the duration of the VisibilityTimeout. If you do not specify a VisibilityTimeout in the request, the overall visibility timeout for the queue is used for the returned messages. The SendMessage action delivers a message to the specified queue. Sets an attribute of a queue. Currently, you can set only the VisibilityTimeout attribute for a queue. The CreateQueue action creates a new queue, or returns the URL of an existing one. When you request CreateQueue, you provide a name for the queue. To successfully create a new queue, you must provide a name that is unique within the scope of your own queues. If you provide the name of an existing queue, a new queue isn't created and an error isn't returned. Instead, the request succeeds and the queue URL for the existing queue is returned. Exception: if you provide a value for DefaultVisibilityTimeout that is different from the value for the existing queue, you receive an error. The ListQueues action returns a list of your queues. The DeleteMessage action unconditionally removes the specified message from the specified queue. Even if the message is locked by another reader due to the visibility timeout setting, it is still deleted from the queue. This action unconditionally deletes the queue specified by the queue URL. Use this operation WITH CARE! The queue is deleted even if it is NOT empty. Gets one or all attributes of a queue. Queues currently have two attributes you can get: ApproximateNumberOfMessages and VisibilityTimeout. Retrieves one or more messages from the specified queue. For each message returned, the response includes the message body; MD5 digest of the message body; receipt handle, which is the identifier you must provide when deleting the message; and message ID of each message. Messages returned by this action stay in the queue until you delete them. However, once a message is returned to a ReceiveMessage request, it is not returned on subsequent ReceiveMessage requests for the duration of the VisibilityTimeout. If you do not specify a VisibilityTimeout in the request, the overall visibility timeout for the queue is used for the returned messages. The SendMessage action delivers a message to the specified queue. Sets an attribute of a queue. Currently, you can set only the VisibilityTimeout attribute for a queue. Amazon Simple Queue Service (Amazon SQS) offers a reliable, highly scalable hosted queue for storing messages as they travel between computers. By using Amazon SQS, developers can simply move data between distributed application components performing different tasks, without losing messages or requiring each component to be always available. Amazon SQS works by exposing Amazon's web-scale messaging infrastructure as a web service. Any computer on the Internet can add or read messages without any installed software or special firewall configurations. Components of applications using Amazon SQS can run independently, and do not need to be on the same network, developed with the same technologies, or running at the same time. Amazon Simple Queue Service (Amazon SQS) offers a reliable, highly scalable hosted queue for storing messages as they travel between computers. By using Amazon SQS, developers can simply move data between distributed application components performing different tasks, without losing messages or requiring each component to be always available. Amazon SQS works by exposing Amazon's web-scale messaging infrastructure as a web service. Any computer on the Internet can add or read messages without any installed software or special firewall configurations. Components of applications using Amazon SQS can run independently, and do not need to be on the same network, developed with the same technologies, or running at the same time.