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 * [EventStore](https://geteventstore.com/) - distributed time series database.
 * [GridDB](https://github.com/griddb/griddb_nosql) - suitable for sensor data stored in a timeseries.
 * [HyperDex](https://github.com/rescrv/HyperDex) - a scalable, next generation key-value and document store with a wide array of features, including consistency, fault tolerance and high performance.
+* [Ignite](https://ignite.apache.org/index.html) - is an in-memory key-value data store providing full SQL-compliant data access that can optionally be backed by disk storage.
 * [LinkedIn Krati](https://github.com/linkedin-sna/sna-page/tree/master/krati) - is a simple persistent data store with very low latency and high throughput.
 * [Linkedin Voldemort](http://www.project-voldemort.com/voldemort/) - distributed key/value storage system.
 * [Oracle NoSQL Database](http://www.oracle.com/technetwork/database/database-technologies/nosqldb/overview/index.html) - distributed key-value database by Oracle Corporation.