What is RAG & Vector Search?

Retrieval-augmented generation, vector databases, embeddings and semantic search

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RAG & Vector Search Lessons — Free Learning

Dev.to · Yash Sonawane 🔍 RAG & Vector Search ⚡ AI Lesson 2d ago

RAG Is Dead. Context Engineering Is the Future.

For the last year, everyone has been talking about one architecture. RAG. Retrieval-Augmented...

Dev.to · Hiroki Kameyama 🔍 RAG & Vector Search ⚡ AI Lesson 3d ago

Building a RAG System from Scratch — MCP: Exposing pgvector as a Reusable Tool Server

In the previous article, we built AI Agents that autonomously search our pgvector database. One...

Dev.to · Hiroki Kameyama 🔍 RAG & Vector Search ⚡ AI Lesson 3d ago

Building a RAG System from Scratch with pgvector and Gemini — Implementation

In the previous article, we covered the three core concepts behind RAG. Now let's build it. By the...

Dev.to · Aditya Raut 🔍 RAG & Vector Search ⚡ AI Lesson 3d ago

I Got Tired of Debugging Haystack RAG Pipelines Blind, So I Built a Diagnostics Engine

RAG pipelines fail in quiet ways. Retrieval drops. Documents go missing. Metadata gets corrupted...

Dev.to · Sonam 🔍 RAG & Vector Search ⚡ AI Lesson 4d ago

Build a Simple RAG App with Telnyx AI Inference

RAG is one of those patterns that sounds more complicated than it has to be. At its core,...

Dev.to · Saurabh "Rob" Dahal 🔍 RAG & Vector Search ⚡ AI Lesson 5d ago

I Let My AI Agent Build a Bedrock RAG Knowledge Base, Here Are the 2 Mistakes the AWS Agent Toolkit Caught

Provisioning a Bedrock RAG knowledge base with S3 Vectors, without the hallucinated API calls. If...

Dev.to · Santanu Mohanta 🔍 RAG & Vector Search ⚡ AI Lesson 1w ago

I added a reranker to my RAG pipeline — it broke everything, then I fixed it

In v2 I added hybrid retrieval (FAISS + BM25) to fix keyword blindspots. All 19 test questions...

Dev.to · Lois-Kleinner 🔍 RAG & Vector Search ⚡ AI Lesson 1w ago

I built research - Document 04 ? RAG and Knowledge Retrieval in 2 months. Zero cloud. Zero compromise.

**research - Document 04 ? RAG and Knowledge Retrieval** --- ## The Problem This document presents the design and evaluation of the Retrieval-Augmented Generati

Dev.to · surajrkhonde 🔍 RAG & Vector Search ⚡ AI Lesson 1w ago

Phase 1: Document Ingestion - The Hidden Complexity Before Embeddings

The Complete Story: Why Most RAG Systems Fail Before They Start The Story...

Dev.to · Vishwajeet Kondi 🔍 RAG & Vector Search ⚡ AI Lesson 1w ago

Knowledge Graphs: The Missing Piece in Most RAG Systems

If you've been exploring AI agents recently, chances are you've come across RAG (Retrieval-Augmented...

Dev.to · zhongqiyue 🔍 RAG & Vector Search ⚡ AI Lesson 1w ago

I built a code Q&A bot with RAG – what worked and what failed

A few months ago, our team had a problem: every new developer spent days digging through scattered...

Dev.to · DatanestDigital 🔍 RAG & Vector Search ⚡ AI Lesson 1w ago

Choosing a Vector Database in 2026: pgvector vs Pinecone vs Qdrant vs Weaviate

A practical comparison of the main vector database options for RAG and semantic search — pgvector, Pinecone, Qdrant, and Weaviate — with the trade-offs that act

Dev.to · surajrkhonde 🔍 RAG & Vector Search ⚡ AI Lesson 1w ago

RAG Pipeline: The Uncle-Nephew Complete Learning Guide

How to Build Systems That Actually Know Your Data (Not Hallucinate About It) ...

Dev.to · xu xu 🔍 RAG & Vector Search ⚡ AI Lesson 1w ago

How Japan’s Research Labs Are Building RAG Systems That Actually Work — And What Western Teams Keep Getting Wrong

Your vector database is returning relevant chunks. Your embedding model scores 0.89 on retrieval...

Dev.to · mofuteq 🔍 RAG & Vector Search ⚡ AI Lesson 1w ago

Your RAG Retrieved the Right Documents but Still Gave the Wrong Answer

Your retriever returned the right documents. The similarity scores look fine. The answer is still...

Dev.to · Mustafa ERBAY 🔍 RAG & Vector Search ⚡ AI Lesson 3w ago

RAG Retrieval Quality: Are Large Models Really Necessary?

Introduction: The Place of Large Models in RAG and Lingering Questions Retrieval-Augmented...

Dev.to · White Oak Intelligence 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

RAG Architecture Deep Dive

In This Article Why RAG Over Fine-Tuning for Financial Documents Chunking Strategy for Financial...

Dev.to · shaikhadibbb 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

How I rescued a RAG assistant from memory leaks and got it running on a 512MB RAM free tier

A few weeks ago, I had a classic "works on my machine" moment. I had built a nice RAG prototype...

Dev.to · Ramya Perumal 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

RAG - Sparse Embedding

Sparse means thinly spread, scattered, or not dense. In sparse embeddings, chunks are converted into...

Dev.to · Akhilesh 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

98. RAG: Give Your AI Access to Your Documents

You ask ChatGPT about your company's internal policies. It makes something up. It sounds confident....

Dev.to · Mukunda Rao Katta 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

My RAG system slowly got worse for three months and nobody noticed.

A composable drift detector for RAG and agent systems. Five orthogonal dimensions, one DriftReport, bring your own embedder and time-series store.

Dev.to · SapotaCorp 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

Why hybrid search is the boring default we keep recommending

A team came to us frustrated that their semantic search was missing exact product codes like 'GPT-4o' even though those tokens appeared in the indexed content.

Dev.to · Manjunath 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

What Enterprise RAG Is Ready For Today and What Production Deployment Actually Requires

Enterprise RAG — A practitioner's build log | Post 6 of 6 This series has documented a system built...

Dev.to · Ayi NEDJIMI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

How to build a production RAG pipeline in Python (without a vector database)

Everyone reaching for a vector database when building RAG is solving the wrong problem first. For...

Dev.to · Manjunath 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

Security Controls in Enterprise RAG: Keys, Audit Logs, and the Hierarchy That Prevents Role Elevation

Enterprise RAG — A practitioner's build log | Post 5 of 6 A knowledge search system for internal...

Dev.to · Manjunath 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

Four Metrics That Actually Tell You Whether Your Enterprise RAG Is Working

Enterprise RAG — A practitioner's build log | Post 4 of 6 RAG evaluation in most implementations...

Dev.to · Manjunath 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

Three Design Decisions That Shaped the Enterprise RAG Retrieval Pipeline

Enterprise RAG — A practitioner's build log | Post 3 of 6 A retrieval pipeline has more design...

Dev.to · david 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

Zero-Trust RAG: Defeating the Shared Private Link Deadlock in Azure Terraform

Your Terraform pipeline is green. The deployment completes without errors. You grab a coffee. Ten...

Dev.to · Seenivasa Ramadurai 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

Choosing the Right RAG Strategy A Complete Decision Guide to Chunking, Agentic RAG, and GraphRAG

Introduction Here is a scenario many RAG builders know well, you wire up a pipeline, load...

Dev.to · retrovirusretro 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

The simplest self-hosted RAG you'll ever set up (Apache 2.0, 20K stars)

Most RAG tools make you choose between simplicity and power. MaxKB doesn't try to be powerful — it...

Dev.to · retrovirusretro 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

Tencent just released a RAG framework and nobody's talking about it

In April 2026, Tencent's WeChat team released WeKnora as open source. MIT licensed. Ollama support...

Dev.to · vigneshwar 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

I Spent 6 Months Fixing RAG. Here's What I Found (And Built)

This is the story of a debugging session that turned into a research paper. The Bug That Started...

Dev.to · soy 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

Building a Hybrid RAG in 200 Lines — SQLite + FTS5 + sqlite-vec + RRF

A complete walkthrough of a production-shaped hybrid retrieval system in a single Python file. BM25 keyword search via FTS5, dense vector search via sqlite-vec,

Dev.to · Anna Danilec 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

RAG Evaluation with RAGAS: Measuring Faithfulness, Context Precision, and Recall in Production

Key takeaways: RAGAS gives you four core metrics that split RAG failures into retrieval vs....

Dev.to · saurabh naik 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

Chunking for RAG: stop tuning the wrong knob

A practical chunking playbook for RAG: why semantic splitters disappoint, what chunk size + overlap actually buy you, and a small eval harness in Python.

Dev.to · Sujatha 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

lexgraph

I Benchmarked GraphRAG vs Basic RAG on 70,000 Indian Supreme Court Judgments — Here's What...

Dev.to · Spicy 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

Your RAG Pipeline Is Failing 40% of Queries. Here's the Fix.

You deployed a RAG pipeline. You tested it. You shipped it. Then a real user asked a multi-step...

Dev.to · feminist 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

The Answer Is an Edge, Not a Sentence — Building a Topology-Native GraphRAG Intelligence Platform with TigerGraph

How we built Shadow Network Intelligence — a GraphRAG-powered fraud investigation platform that...

Dev.to · sydney muganda 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

Building RAG Assistant: A I Built a Desktop RAG Chatbot From Scratch — Here's Everything I Learned

This week I moved past basic tutorials to build a structured, package-based desktop RAG application...

Dev.to · Yoshiki Fujiwara(藤原善基)@AWS Community Builder 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

Smart Routing, Transfer Family Ingestion, and Voice Chat — Permission-Aware RAG v4.2

What This Post Covers This is a companion article to the FSx for ONTAP S3 Access Points...

Dev.to · WonderLab 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

RAG Series (15): CRAG — Self-Correcting When Retrieval Falls Short

The Knowledge Base Boundary Problem Previous articles optimized retrieval quality — better...

Dev.to · Nitin Srivastava 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

Production Reranker Layer for RAG in Python: Cross-Encoder, Cohere Fallback, and Reciprocal Rank Fusion (Runnable Code)

I shipped my fifth RAG pipeline to production in February. Top-10 recall@10 was 0.94. The team ran a...

Dev.to · WonderLab 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

RAG Series (14): Self-RAG — Let the Model Decide Whether to Retrieve

The Hidden Assumption in Traditional RAG Traditional RAG pipelines never question one...

Dev.to · Rushank Savant 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

Beyond Keywords: Mastering HyDE for Smarter Retrieval 🧠

If you’ve ever built a RAG system, you’ve likely felt the frustration of the "Mismatch Problem". You...

Dev.to · Gabriel Anhaia 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

Vector Index Cold Start: Why Your First Query Takes 8 Seconds

First-query latency on vector DBs. Why HNSW loads lazy + four warm-up patterns that stop the 8-second cold-start tax.

Dev.to · Md Ayan Arshad 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

I Increased Retrieval From Top-5 to Top-20. My Answers Got Worse

The standard advice for improving RAG retrieval quality is: retrieve more candidates, then filter...

Dev.to · Ryosuke Tsuji 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago

Graph RAG Isn't a One-Shot Anymore — The Case for Agentic Graph RAG MCPs

Hi, I'm Ryan, CTO at airCloset. Over my last few posts, I've introduced internal MCP servers we've...

Dev.to · Dmytro Levchenko 🔍 RAG & Vector Search ⚡ AI Lesson 2mo ago

Preparing RAG pipeline for production

Intro Having a working RAG that provides correct semantic answers is a great start, yet,...