Ask HN: Free and open source distributed database written in C++ or C

1. ydb

   1 12 4,548 10.0 C++

   YDB is an open source Distributed SQL Database that combines high availability and scalability with strong consistency and ACID transactions

   

2. JetBrains

   surveys.jetbrains.com featured

   Tell us how you use coding tools. You may win a prize! Are you a developer or a data analyst? Share your thoughts about your coding tools in our short survey and get a chance to win prizes!

   

3. yugabyte-db

   2 98 9,721 10.0 C

   YugabyteDB - the cloud native distributed SQL database for mission-critical applications.

   

   https://www.yugabyte.com - Postgres fronted distributed OLTP database

   I work there (300+ ppl). It's primarily open source. It makes money through support contracts and cloud hosting, but all core development is done in the open.

4. Scylla

   3 24 14,813 10.0 C++

   NoSQL data store using the Seastar framework, compatible with Apache Cassandra and Amazon DynamoDB

   

   Never used it before but check out https://github.com/scylladb/scylla

   I have a lot of experience with Cassandra though.

5. dqlite

   4 33 4,119 8.8 C

   Embeddable, replicated and fault-tolerant SQL engine.

   

6. scaliendb

   5 2 86 10.0 C++

   ScalienDB is a scalable, replicated datastore.

   

7. ClickHouse

   6 251 42,570 10.0 C++

   ClickHouse® is a real-time analytics database management system

   

8. redpanda

   7 72 10,797 10.0 C++

   Redpanda is a streaming data platform for developers. Kafka API compatible. 10x faster. No ZooKeeper. No JVM!

   

   Went searching for https://redpanda.com/ and couldn't find it in the DB, fyi :)

   Not affiliated, just saw the Jepsen report posted here a few weeks ago.

9. Sevalla

   sevalla.com featured

   Deploy and host your apps and databases, now with $50 credit! Sevalla is the PaaS you have been looking for! Advanced deployment pipelines, usage-based pricing, preview apps, templates, human support by developers, and much more!

   

10. rupy

    8 32 146 3.7 Java

    HTTP App. Server and JSON DB - Shared Parallel (Atomic) & Distributed

    

    I have one in Java: https://github.com/tinspin/rupy

    Here is the 2000 lines of code of the entire database: http://root.rupy.se/code?path=/Root.java

    And here you can try it out: http://root.rupy.se

11. Aerospike

    9 18 1,228 8.2 C

    Aerospike Database Server – flash-optimized, in-memory, nosql database

    

    Scylla's main competitor in replacing C* with native code.

    https://github.com/aerospike/aerospike-server

12. MySQL

    10 190 11,646 9.9 C++

    MySQL Server, the world's most popular open source database, and MySQL Cluster, a real-time, open source transactional database.

    

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