Why Postgres is often a better choice than dedicated Vector Databases in 2026
Why Postgres Is Often a Better Choice Than Dedicated Vector Databases in 2026 Why Postgres Is Often a Better Choice Than Dedicated Vector Databases in 2026 The Definitive Guide to High-Dimensional Data Architecture | Article #13 Every RAG tutorial in 2026 seems to reach for a dedicated vector database by default — Pinecone, Milvus, Weaviate. But for a large share of real applications, that's premature infrastructure. Thanks to the maturity of the pgvector extension, plain Postgres — the database most teams already run — can handle vector search well enough that adding a second, separate database is often unnecessary complexity rather than a requirement. 1. What an Embedding Actually Is An embedding is a numerical vector that represents the semantic "essence" of a piece of text, image, or other data. Words like "king" and "queen" end up mathematically close together in this vector space, even though they share no letters — the mo...
