GoKawiilRAG systems: engineers urged to skip vector databases and embeddings by default
A technical guide argues that most retrieval-augmented generation (RAG) implementations are over-engineered, with teams reaching for embeddings, vector databases and reranking before checking if simpler tools suffice. It lays out decision factors—data freshness, corpus size and churn, query patterns, scale and team ML skill—to determine which retrieval approach fits, starting with plain full-text search like BM25, Elasticsearch or Postgres search before adding complexity.