Milvus is an open-source database built around vector similarity search. It stores numerical embeddings that can represent documents, images, and other types of information, then retrieves nearby or similar entries.
Unlike a general-purpose relational database, its central focus is indexing and searching vectors efficiently. Running it yourself can involve operational decisions about infrastructure and deployment.
Useful starting point: examining open-source infrastructure for semantic or similarity search.
Official documentation
Read the vendor’s documentation. The overview above summarizes selected documented capabilities, not hands-on performance tests or a product endorsement.