YDB

YDB is a distributed SQL database platform designed for developers building AI-enabled and transactional applications at scale. It offers features like vector similarity search (for recommendations, semantic search, and RAG pipelines), scalable ACID transactions, real-time streaming with Kafka compatibility, native SQL (structured and JSON), strong enterprise security, and multiple deployment and backup options. YDB supports both analytical (OLAP) and transactional (OLTP) workloads, integrates with common observability tools, and is available as open-source, enterprise, or managed cloud solutions.