Developed since 2010 by Rich Hickey and the Relevance team, Datomic offers some new approaches to database architecture. Leveraging current trends in cloud and storage it has strong transactions, rich query API and read scaling.
SpringSource has recently released Spring Data Redis, an abstraction over the existing Java Redis libraries that offers a unified API and easier Java Object serialization for Spring based applications.
Riak is a key-value based NoSQL database that can be used to store user session related data. Andy Gross from Basho Technologies recently spoke at QCon SF 2011 Conference about Riak use cases. InfoQ spoke with Andy and Mark Phillips from Basho team about Riak database features and best practices when using Riak.
Cloud service provider Tier 3 has released Iron Foundry, a .NET-friendly fork of VMware’s Cloud Foundry platform-as-a-service. Iron Foundry gives the sizeable number of .NET developers an open source alternative to Windows Azure and lets them participate in the increasingly popular Cloud Foundry ecosystem.
Statelessness has been a central principle of RESTful design and implementation. However, with the advent of NoSQL implementations, Ganesh Prasad wonders whether that is no longer true and suggests that REST+NoSQL offers a way to remove this restriction, providing stateful sessions, scalability and fault tolerance.
Oracle has announced the Big Data Appliance running with Oracle NoSQL Database, a new key-value store based on Oracle Berkeley DB Java Edition. Some of features include: billions of rows of storage capacity in records and terabytes in B-tree, ACID transactions, CRUD, sharding, no single point of failure, disaster recovery via datacenter replication.
JasperSoft announces reporting support for Hadoop and leading NoSQL databases.
The first four NoSQL datastores are available as Add-ons for the Heroku PaaS (platform-as-a-service) platform. Using the Add-on system that was introduced in October 2009, CouchDB from Cloudant, Membase from NorthScale, MongoDB from MongoHQ and Redis were made available for Heroku users.