SimpleDB

Online Games Amazon SimpleDB is a highly available NoSQL data store that offloads the work of database administration. Developers simply store and query data items via web services requests and Amazon SimpleDB does the rest. Unbound by the strict requirements of a relational database, Amazon SimpleDB is optimized to provide high availability and flexibility, with little or no administrative burden. Behind the scenes, Amazon SimpleDB creates and manages multiple geographically distributed replicas of your data automatically to enable high availability and data durability. The service charges you only for the resources actually consumed in storing your data and serving your requests. The service allows you to focus fully on value-added application development, rather than arduous and time-consuming database administration. Amazon SimpleDB automatically creates multiple geographically distributed copies of each data item you store. Application examples include:

HBase - Apache HBase™ Home Amazon DynamoDB – a Fast and Scalable NoSQL Database Service Designed for Internet Scale Applications Today is a very exciting day as we release Amazon DynamoDB, a fast, highly reliable and cost-effective NoSQL database service designed for internet scale applications. DynamoDB is the result of 15 years of learning in the areas of large scale non-relational databases and cloud services. Several years ago we published a paper on the details of Amazon’s Dynamo technology, which was one of the first non-relational databases developed at Amazon. The original Dynamo design was based on a core set of strong distributed systems principles resulting in an ultra-scalable and highly reliable database system. Amazon DynamoDB, which is a new service, continues to build on these principles, and also builds on our years of experience with running non-relational databases and cloud services, such as Amazon SimpleDB and Amazon S3, at scale. Amazon DynamoDB is a fully managed NoSQL database service that provides fast performance at any scale. History of NoSQL at Amazon – Dynamo Pricing complexity.

Ehcache | Performance at Any Scale Redis ArangoDB - The universal free and open source nosql database leveldb - A fast and lightweight key/value database library by Google. Apache Accumulo