dbcp

Database copy tool that streams data between MySQL, PostgreSQL, SQLServer, LevelDB, MongoDB, ElasticSearch, and cloud storage (S3, GCS, Azure) or files in JSON, ND-JSON, CSV, SQL, Parquet, and TFRecord formats. Current stable version is 1.4.10. Release cadence is irregular. Key differentiators: no intermediate storage required for streaming; supports sharding, compound inserts, and SQL dialect translation; built on Node.js streams with a CLI and TypeScript API.