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Databases & search
Vector database
Similarity search over embeddings.
When to use
- Semantic search, recommendations, RAG
Pitfalls
- Index rebuilds are expensive; plan for embedding model changes
Options by provider
The first option is what diagrams show for that provider.
Amazon Web Services
- OpenSearch k-NNManaged
- Aurora PostgreSQL with pgvectorManaged
Google Cloud
- Vertex AI Vector SearchManaged
- AlloyDB with pgvectorManaged
Microsoft Azure
- Azure AI Search vector searchManaged
- Azure Cosmos DB vector searchManaged
Open source / self-hosted
- pgvectorSelf-hosted
- MilvusSelf-hosted
- QdrantSelf-hosted
Used in
Not used in any system yet.