What's New Welcome Introduction to Amazon SQS How SQS Queues Work About SQS Queues Properties of Distributed Queues About the Queue URL Resources Required to Process Messages Visibility Timeout Message Lifecycle Access Control for Queues About Requests and Responses Query Requests SOAP Requests REST Requests Request Authentication What Is Authentication? Your AWS Account Your AWS Credentials HMAC-SHA1 Signatures Query Request Authentication SOAP Request Authentication SOAP with WS-Security SOAP without WS-Security REST Request Authentication Responses API Reference WSDL and Schema Location Query and SOAP API Reference Common Request Parameters Common Errors AddGrant ChangeMessageVisibility CreateQueue DeleteMessage DeleteQueue GetQueueAttributes GetVisibilityTimeout (Deprecated) ListGrants ListQueues PeekMessage ReceiveMessage RemoveGrant SendMessage SetQueueAttributes SetVisibilityTimeout (Deprecated) REST API Reference Common REST Headers Common REST Errors DELETE on Message DELETE on MessageQueue GET on Message GET on MessageQueue GET on QueueService POST on QueueService PUT on MessageQueue Glossary Document Conventions