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MMMihai Marinescufeaturingcode.com6d ago · 31 min read

RAG From First Principles: How a PDF Becomes a Searchable Answer

As a disclaimer, my project was created without spending any money on tokens at Voyage, Grok or Clerk for auth - meaning all the implementation was done on their free tier. The principles remain the s

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TPTushar Patilblog.techtush.inMay 16 · 16 min read

🔒 Multi-Tenant RAG: Row-Level Security in pgvector with MCP

This is Part 11 of the AI Engineering with TypeScript series. Prerequisites: Part 6 — Multi-Tenant Sessions · Part 10 — MCP + RAG Stack: Node.js 20+ · TypeScript 5.x · PostgreSQL 16 · pgvector · @mode

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TPTushar Patilblog.techtush.inMay 15 · 16 min read

🔍 MCP + RAG: Building a Knowledge-Base Tool with Vector Search in TypeScript

This is Part 10 of the AI Engineering with TypeScript series. Prerequisites: Part 2 — MCP Fundamentals · Part 3 — AI Agent · Part 5 — Production MCP Server Stack: Node.js 20+ · TypeScript 5.x · OpenAI

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DPDigit Patroxdigitpatrox.hashnode.devMay 12 · 6 min read

How to Build a RAG System with pgvector and LangChain: The Production Architecture

Most production AI failures are not model failures. They are retrieval failures. If you want to understand why your Retrieval-Augmented Generation (RAG) system is hallucinating, stop looking at your p

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EEntreelistiaq.hashnode.devMay 8 · 6 min read

Benchmarking pgvector IVFFlat vs HNSW indexes for production RAG applications - Blog Post

Benchmarking pgvector IVFFlat vs HNSW indexes for production RAG applications I've spent the last three months stress-testing vector indexes in production environments, and the results challenge conventional wisdom about when to use each index type. ...

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EEntreelistiaq.hashnode.devMay 8 · 6 min read

Benchmarking pgvector IVFFlat vs HNSW indexes for production RAG applications - Blog Post

Benchmarking pgvector IVFFlat vs HNSW indexes for production RAG applications I've spent the last three months stress-testing vector indexes in production environments, and the results challenge conventional wisdom about when to use each index type. ...

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KMKevin Mauel | tony-stark.ethtony-stark.hashnode.devApr 19 · 11 min read

Two Weeks of My News Aggregator: RAG Chat and a Sentiment Dial

Originally published on my blog Two weeks ago I shipped my news aggregator as a finished Symfony 8 app — fetch feeds, enrich with AI, send alerts, generate digests. Fifty commits later it looks different. The aggregator grew a conversational chat th...

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HCHarshwardhan Choudharyeasyharshmods.hashnode.devApr 7 · 14 min read

RAG in Practice: Building a Citation-Grounded Search System with pgvector and Amazon Bedrock

Disclaimer: PharmaGuard is a demo project built to explore RAG architecture and pgvector. It is not validated for clinical use. Do not use it to make medical decisions. Always consult a licensed pharm

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DADaniel Anthony Romitelli Jrcraftedbydaniel.hashnode.devMar 19 · 16 min read

The Day My AI Forgot Everything (So I Built a Context-Continuity Inference Stack)

The hardest failure mode I’ve seen in enterprise AI systems isn’t hallucination. It’s amnesia. Not “the model wasn’t smart enough.” Not “prompting is hard.” Something more mundane and more expensive: continuity broke, context evaporated, and a human ...

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DADaniel Anthony Romitelli Jrcraftedbydaniel.hashnode.devMar 10 · 6 min read

My RAG Stack for Code Retrieval: pgvector HNSW + Metadata Filters + Reranking (and the Parts I Refuse to Guess About)

I sat down to write the pgvector section of this post—the HNSW index DDL, the reranker batching, the metadata filter shapes—and realized I kept reaching for the wrong file. The query I was proud of wasn’t the vector search. It was dedupeRagChunks. Th...

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Trending tags this week

RAG From First Principles: How a PDF Becomes a Searchable Answer

🔒 Multi-Tenant RAG: Row-Level Security in pgvector with MCP

🔍 MCP + RAG: Building a Knowledge-Base Tool with Vector Search in TypeScript

How to Build a RAG System with pgvector and LangChain: The Production Architecture

Benchmarking pgvector IVFFlat vs HNSW indexes for production RAG applications - Blog Post

Benchmarking pgvector IVFFlat vs HNSW indexes for production RAG applications - Blog Post

Two Weeks of My News Aggregator: RAG Chat and a Sentiment Dial

RAG in Practice: Building a Citation-Grounded Search System with pgvector and Amazon Bedrock

The Day My AI Forgot Everything (So I Built a Context-Continuity Inference Stack)

My RAG Stack for Code Retrieval: pgvector HNSW + Metadata Filters + Reranking (and the Parts I Refuse to Guess About)