Working with visibility timeouts in Amazon SQS - Amazon Simple Queue Service
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Working with visibility timeouts in Amazon SQS

For optimal performance, set the visibility timeout to be larger than the Amazon SDK read timeout. This applies to using the ReceiveMessage API action with either short polling or long polling.