Amazon SimpleDB

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. With Amazon SimpleDB, focus on application development without worrying about infrastructure provisioning, high availability, software maintenance, schema and index management, or performance tuning. Amazon SimpleDB allows users to focus fully on value-added application development, rather than arduous and time-consuming database administration. Amazon SimpleDB automatically manages infrastructure provisioning, hardware and software maintenance, replication and indexing of data items, and performance tuning. Amazon SimpleDB automatically creates multiple geographically distributed copies of each data item you store. This provides high availability and durability – in the unlikely event that one replica fails, Amazon SimpleDB can failover to another replica in the system. Choose between consistent or eventually consistent read requests, gaining the flexibility to match read performance (latency and throughput) and consistency requirements to the demands of the application, or even disparate parts within the application. Amazon SimpleDB provides streamlined access to the store and query functions that traditionally are achieved using a relational database cluster – while leaving out other complex, often-unused database operations. The service allows users to quickly add data and easily retrieve or edit that data through a simple set of API calls.