Apache Paimon vs Dolt

Apache Paimon is a lake format for realtime lakehouse architectures, supporting streaming and batch operations with Flink and Spark. Primary-key tables handle large-scale streaming updates through configurable merge engines, including deduplication, partial updates, aggregation, and first-row updates. Append tables support batch and streaming processing, small-file merging, and compaction with Z-order sorting. Paimon also provides ACID transactions, time travel, schema evolution, and metadata for petabyte-scale datasets and many partitions. Listed integrations include Flink, Spark, Hive, Trino, Presto, StarRocks, and Doris, though supported operations vary by engine and version. Documented CDC sources include MySQL, PostgreSQL, Kafka, MongoDB, and Pulsar. Other capabilities include blob and vector storage, full-text search, and global indexing. PyPaimon provides catalog, table, Arrow, and pandas APIs plus a command-line tool; core reads and writes do not require a JVM or a running Flink or Spark cluster. It is free at free, with users choosing connectors and storage plugins for their environment.

Dolt is a SQL database for managing data with version-control operations. Users can fork, clone, branch, merge, push and pull databases, then inspect commits, compare diffs, resolve SQL conflicts and revert commits. It can be connected to like a MySQL database or deployed as a versioned MySQL replica. DoltHub hosts public data and provides a web interface for editing and pull-request review; databases are public by default, with private databases available to Pro users or organizations. DoltLab is a self-hosted option for running DoltHub on a private network or development machine. Connector libraries include JDBC, Perl DBI, MySQL Connector/Python and Go sqlx/database/sql; listed framework integrations include Django, SQLAlchemy, Prisma, Laravel, Hibernate, GORM, Rails and FastAPI. Hosted Dolt includes a web SQL workbench, nightly full backups retained for 14 days, and AWS and GCP private networking. Dolt is free and open source. DoltHub Pro is $5 a month; a Hosted Dolt trial instance is $50 a month.