Transactional embedded database, it can embed into mobile, desktop and web applications, supports on-disk and in-memory storages. API: Java,C# (Android, Mono, Xamarin, Unity3D). Query Method: SQL-like and KeyValue. Written In: Java, C#. Replication: MasterSlave, MasterMaster.
A shared nothing, document-oriented cluster data store. Accessed via SQL and has builtin BLOB support. Uses the cluster state implementation and node discovery of Elasticsearch. License: Apache 2.0, Query Method: SQL, Clients: HTTP (REST), Python, Java (JDBC or native), Ruby, JS, Erlang, Replication + Sharding: automatic and configurable, written in: Java, » Crate Data GitHub Project, » Documentation.
API: Scala. Written in Scala. Replication: Replicas vote on writes and reads. Sharding:Hashes keys onto array of replica cohorts. Concurrency: Optimistic + Multiversion Concurrency Control. Provides multirow atomic writes. Exposes optimistic concurrency through API to support HTTP Etags. Embedded solution.
Symas LMDB Ultra-fast, ultra-compact key-value embedded data store developed by Symas for the OpenLDAP Project. It uses memory-mapped files, so it has the read performance of a pure in-memory database while still offering the persistence of standard disk-based databases, and is only limited to the size of the virtual address space, (it is not limited to the size of physical RAM)
Dear community. Please have a look on this workshop: NoSQL-Net 2014 - 1st International Workshop on NoSQL Databases and Linked Data Applications. The workshop will be held in conjunction with DEXA 2014 conference in Munich, Germany. It will be a one-day workshop scheduled during the main conference, i.e. September 1 - 5, 2014. Abstract Submission: March 25, 2014 Submission of Full Papers: April 10, 2014 http://www.ksi.mff.cuni.cz/NoSQL-Net2014/