Cosmos DB 向量搜索用于 RAG：Azure 上的 NoSQL 原生 DiskANN 和 Terraform

Azure AI Search is a powerful tool but requires managing a separate service. Cosmos DB for NoSQL now includes built-in vector search powered by Microsoft's DiskANN, allowing for the storage of vectors and data together with sub-20ms latency. While Azure AI Search offers a complete retrieval stack with features like semantic ranking, hybrid search, and query decomposition, it may be more infrastructure than necessary for many RAG workloads due to its separate service and pricing tiers. Setting up vector search in Cosmos DB using Terraform can streamline infrastructure management, making it suitable for RAG workloads.