Choosing a vector database for ANN search at Reddit

This post details Reddit's process for selecting a vector database for ANN search, evaluating Milvus 2.4 alongside other solutions. It highlights Milvus's strengths in hybrid search, metadata filtering, support for multiple indexing methods, and its open-source nature as key factors in their decision. The evaluation process involved qualitative and quantitative assessments against functional and non-functional requirements, emphasizing scale, reliability, community, and expressive metadata types.