Recommendation Systems

Milvus is a cloud-native distributed vector database for scalable ANN search over embeddings. It supports HNSW, IVF, DiskANN, GPU indexes, BM25 full text and hybrid dense/sparse search, making it a common retrieval backend for RAG and multimodal AI apps.

RAG | Go · vector-database · ANN-search

Postgres extension adding vector types plus exact and approximate nearest neighbor search with HNSW and IVFFlat indexes. Supports single, half, binary, and sparse vectors with L2, inner product, cosine, L1, Hamming, and Jaccard distances for embeddings and RAG retrieval.

RAG | C · vector-search · embeddings

Vespa is a distributed platform for indexing and searching text, vectors, tensors, and structured data, with machine-learning inference at serving time. Use it to build large-scale search, recommendation, personalization, and RAG systems.

RAG | Java · AI search · vector search