--- title: "RAG in Go: A Vulnerability Research Tool" url: https://daily.dev/posts/rag-in-go-a-vulnerability-research-tool-31hu4l2yd source_url: https://www.ardanlabs.com/blog/2026/04/rag-in-go-a-vulnerability-research-tool/ type: article source: "Ardan Labs" published: 2026-04-20T20:52:54.237Z updated: 2026-04-20T20:53:14.367Z tags: ["golang", "nlp", "rag", "duckdb"] reading_time: 13 upvotes: 3 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # RAG in Go: A Vulnerability Research Tool **[Ardan Labs](https://daily.dev/sources/ardlbs)** · 13 min read · 3 upvotes · 0 comments ## Summary A practical walkthrough of building a RAG (Retrieval-Augmented Generation) system in Go that queries the Go Vulnerability Database. The tutorial covers two phases: ingestion (parsing vulnerability JSON from a zip file, generating vector embeddings with a Qwen3 model, and storing them in an embedded DuckDB database) and search (embedding user queries, performing cosine similarity lookups, and passing relevant documents as LLM context). Full code listings are provided using langchaingo and DuckDB with a 1024-float vector column. The post also discusses design trade-offs like batch processing, similarity thresholds, chunking strategies, and query enhancement. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Making Very Small LLMs Smarter With RAG](https://daily.dev/posts/making-very-small-llms-smarter-with-rag-ivzwrmg6q) · Docker · 1 upvotes · 0 comments --- Tags: [#golang](https://daily.dev/tags/golang), [#nlp](https://daily.dev/tags/nlp), [#rag](https://daily.dev/tags/rag), [#duckdb](https://daily.dev/tags/duckdb) [View this post on daily.dev](https://daily.dev/posts/rag-in-go-a-vulnerability-research-tool-31hu4l2yd)