Amazon DynamoDB Accelerator (DAX) is a fully managed, highly available, in-memory cache for DynamoDB that delivers up to a 10x performance improvement – from milliseconds to microseconds – even at millions of requests per second. DAX does all the heavy lifting required to add in-memory acceleration to your DynamoDB tables, without requiring you to manage cache invalidation, data population, or cluster management. Now you can focus on building great applications for your customers without worrying about performance at scale. You do not need to modify your application logic, since DAX is compatible with existing DynamoDB API calls. You can enable DAX with just a few clicks in the AWS Management Console or using the AWS SDK. Just as with DynamoDB, you only pay for the capacity you provision.
DAX is now available in preview in US East (N. Virginia), EU (Ireland), and US West (Oregon) and supports a DAX SDK for Java. Please submit the following information to request access to the preview. We will contact you with instructions on how to get started as soon as we're able to add you to the preview. There is no charge for your DAX cluster during the preview period. You will need an AWS account to use DAX. If you don't already have an AWS account, you can easily create one. To learn more about using DAX with DynamoDB, visit our product page and read our DAX documentation.