How to Build a RAG Pipeline with LangChain and Claude in 2026
A complete walkthrough for building a Retrieval-Augmented Generation pipeline with LangChain, a local vector store, and Claude for grounded answers.
Author
MD Rafikul Islam
MD Rafikul Islam is a software developer and editor of TechPulse. He writes about developer tools, hardware, AI, and practical technology decisions. Some articles are based on cited documentation and analysis rather than hands-on testing; readers should check each article for sources and testing disclosures. Corrections are welcome at rony.yf25@gmail.com.
407 articles published
How to Set Up a Local AI Dev Environment with Ollama in 2026
Install Ollama, pick the right local LLM for your hardware, wire it into your editor, and build a local API around it — a full 2026 setup guide.
How to Use Bun as a Node.js Replacement in 2026: Complete Guide
A practical guide to migrating from Node.js to Bun in 2026: installation, Express compatibility, the built-in test runner, and where Bun still has gaps.
Best Portable Monitors for Developers 2026: Buying Guide
Best portable monitors for developers in 2026: ASUS ZenScreen, Arzopa A1 and espresso 15 Touch compared, plus the USB-C port check that decides whether yours will work.
How to Fix ‘JavaScript heap out of memory’ Error in Node.js
Fix Node.js 'JavaScript heap out of memory' and OOM kills — raising the heap limit, finding real leaks with heap snapshots, and streaming instead of buffering.
Is Remote Work Dying for Developers in 2026? What the Hiring Data Shows
Is remote developer work disappearing in 2026? What has actually changed in hiring, which roles stayed remote, and how to position yourself either way.
How to Optimize PostgreSQL Query Performance in 2026: Indexes, EXPLAIN, and Tuning
Optimize slow PostgreSQL queries in 2026 — reading EXPLAIN ANALYZE, choosing the right index, fixing N+1 patterns, and the configuration that actually matters.
Best Code Review Tools 2026: GitHub PRs vs Graphite vs Reviewable vs CodeRabbit
We compared the best code review tools in 2026 — stacked pull requests, AI review quality, diff readability, and which tool actually speeds up review.
How to Fix ‘SSL certificate problem: unable to get local issuer certificate’
Fix the 'unable to get local issuer certificate' error in curl, Git, Node.js, and Python — what causes it, and the correct fix instead of disabling verification.
Should I Take a Pay Cut to Switch to a Better Tech Stack in 2026?
Should you accept less salary to work with modern technology? How to value the trade, when it pays back, and the cases where it never does.