February 2026
Intermediate to advanced
392 pages
11h 40m
English
Content preview from Build AI-Enhanced Web Apps
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11 Building an AI RAG agent: Project walk-through
This chapter covers
- Building RAG apps with Next.js, Clerk, and LangChain.js
- Securing documents and isolating user data
- Using Upstash Redis and Vector for search and state
- Designing chat interfaces with text-to-speech
- Optimizing databases and prompt engineering
- Solving state sync and document-parsing issues
This project is a more complex full-stack generative AI web application: a retrieval-augmented generation (RAG) app designed to manage multiple knowledge bases. The app uses the Vercel AI SDK and LangChain.js libraries to enable users to upload documents, organize them into knowledge bases, and interact with these knowledge bases via conversational AI. The application also integrates ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.