ActorDB vs PrestoDB

ActorDB is an open-source distributed relational SQL database from Biokoda that organizes data into independent actors. SQLite handles SQL queries and LMDB provides storage. Applications connect through the MySQL protocol or Thrift, and the FAQ recommends Thrift; default MySQL drivers also work. ActorDB uses Raft for distributed consensus and write replication, and describes itself as strongly consistent. Transactions can span multiple actors and are described as ACID compliant. It can also provide a sharded key-value store with structured values, multiple columns, and foreign tables. The maker says horizontal scaling can reach hundreds of nodes and petabytes when data is spread across actors. If a server fails, a follower can lead an actor while a cluster majority remains online. Recommended cluster sizes are 1, 3, or 5 nodes. Supported downloads include Windows, Mac OS X, CentOS, and Ubuntu, with version 0.10.29 dated 1 October 2019 shown as the latest stable release.

PrestoDB is a free, open-source distributed SQL query engine for querying large data sets across different kinds of data systems. Connectors access sources through a standard API, with documented options including Hive, Iceberg, Kafka, Cassandra, MongoDB, MySQL, PostgreSQL, BigQuery, Redshift, and SQL Server. Queries run across a coordinator and worker nodes. The project provides a server tarball, command line interface, JDBC driver, and Docker container, with deployment guidance for Docker, Helm, and Homebrew. Presto documents Kerberos, LDAP, password-file, and OAuth 2.0 authentication, plus access control and secure internal communication; SSL/TLS can protect communication between cluster nodes. It is self-hosted and governed as an independent open-source project under the Linux Foundation. The documentation cautions that SQL familiarity does not mean Presto includes the features of a standard database. The project directs users to its Slack community to connect with engineers and other users. The listed current release is version 0.299, dated August 31, 2026.