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@@ -546,10 +546,12 @@ A curated list of Microservice Architecture related principles and technologies.
 - [MemSQL ![c]](http://www.memsql.com/) - High-performance, in-memory database that combines the horizontal scalability of distributed systems with the familiarity of SQL.
 - [OpenTSDB](http://opentsdb.net) - Scalable and distributed time series database written on top of Apache HBase.
 - [Parquet](https://github.com/apache/parquet-format) - Columnar storage format available to any project in the Hadoop ecosystem, regardless of the choice of data processing framework, data model or programming language.
+- [Pilosa](https://github.com/pilosa/pilosa) - Open source, distributed bitmap index that dramatically accelerates queries across multiple, massive data sets.
 - [Reborn](https://github.com/reborndb/reborn) - Distributed database fully compatible with redis protocol.
 - [RethinkDB](http://rethinkdb.com/) - Open source, scalable database that makes building realtime apps easier.
 - [Secure Scuttlebutt](https://github.com/ssbc/docs) - P2P database of message-feeds.
 - [Tachyon](http://tachyon-project.org/) - Memory-centric distributed storage system, enabling reliable data sharing at memory-speed across cluster frameworks.
+- [TiKV](https://github.com/tikv) - Distributed transactional key-value database.
 - [Voldemort](https://github.com/voldemort/voldemort) - Open source clone of Amazon DynamoDB
 - [VoltDB ![c]](https://www.voltdb.com/) - In-Memory ACID compliant distributed database.