vfaner / jync

Jync 捷同 - 极简、极速的异构数据库实时同步工具。单 JAR 部署，无需 Kafka/Zookeeper，零外部依赖。支持 MySQL、Oracle、PostgreSQL 及众多信创数据库。内置 DDL 自动同步、幂等 upsert、断点续传，内网离线可用。

apache / hudi

Upserts, Deletes And Incremental Processing on Big Data.

dingodb / dingo

A multi-modal vector database that supports upserts and vector queries using unified SQL (MySQL-Compatible) on structured and unstructured data, while meeting the requirements of high concurrency and ultra-low latency.