Walkthroughs

This year vector databases have sprung up like mushrooms to enable applications to retrieve context based on semantic search. A large portion of these applications have used the retrieved context to augment the ability of large language models (LLMs) in a pattern known as RAG. On November 7th OpenAI released its Assistants API, enabling the implementation of AI chat interfaces with context retrieval without needing a separate message store or vector database. Does this new API make vector databases obsolete?

Hi all 👋 In this 8 hour tutorial you will learn how to create an end-to-end fullstack notion clone, all with proper notion-style editor, cover images, nested documents, publishing documents to public, real-time database and more.

Build a text adventure game with Next.js, Convex, OpenAI, and DALL-E. Full stack walkthrough.

Check out Convex, an incredibly well-designed Firebase alternative that provides a realtime database, object storage, server functions, http API hosting, cron jobs and more!

Syncing your Pagerduty instance with Slack is a good way to stay on top of your on-call schedule. We cover syncing Pagerduty information with a Slack channel.

Convex is a full-stack development platform and cloud database, including built-in vector search. In this third post in our [series](https://stack.convex.dev/ai-chat-using-openai-assistants-api), we’ll build an AI-powered chat interface using Convex, with our own message storage and context retrieval.

In this second post in our series, we’ll build an AI-powered chat interface using LangChain and its new Convex integration.

On November 7th OpenAI released its Assistants API, enabling chat bot with context retrieval implementations without needing a messages or vector database. In this post, we’ll cover how to leverage this API to build a fully functioning AI chat interface.

Now that we've launched Preview Deployments on Convex, you can test out backend changes easier than ever. But you may want to seed your project with data first, so let's go over how to do that.

There’s a new fastest way to start building a new app on Convex. Use our new magical command, npm create convex, to spin up a new Convex app from a preexisting template.

Launching our official Convex Fivetran connector.

Generating rhyming words via GPT-4, along with Dall-E cartoon images and ElevenLabs speaking with a specific voice to make a game to teach words.

In this video, you will learn to build a powerful realtime chat with React Native and use Convex as the backend. From creating groups to uploading images and styling messages you will learn all the skills you need to build a React Native chat!

A quick start guide for using Convex with Next.js

Learn more about how AI Town works and how to customize it. In this post, we'll dig into how character identities are represented: how to alter them, and how to add entirely new characters.

Learn how to generate fake data for your dev deployments using the Faker library

Leverage Typeform while keeping the data in a powerful transactional application database.

Building a full stack app to generate images based on a prompt and user-provided sketch

So you have a pretty good grasp on web development, but you want to learn more about building with generative AI? You're not alone. In this live-coding course, follow along as we build a full-stack generative AI app using LangChain.js, Replicate, and OpenAI.

Is your project in Airtable ready for more code and less no-code? I’ve published some code to help you migrate your data into Convex.

If you've been itching to write Convex programs in Rust, your time has come. We take the new Convex Rust crate for a spin by writing a distributed system simulation of Santa and his team working together at the North Pole. Yes, really.

In this post, we’ll look at how to use the moderation API to flag messages before sending them to Chat-GPT, and patterns for handling these errors in a full-stack React app.

How to store multiple personalities Convex and provide them to the chatGPT API, enabling changing personalities mid-conversation. This is a follow-up to Building a full-stack ChatGPT app.

Let's build a full-stack chat app to talk to ChatGPT on its new API!

You can build a database-powered app with end-to-end type safety and real-time updates without needing to learn how to manage databases. This tutorial will show you how.

Oftentimes during testing we want to mock out our backend so we can unit test our UI components without talking to our actual server code. In this article, we’ll explore options for testing React components that call Convex React hooks using mocking and dependency injection. To do this, I’ve written a sample TypeScript React app using the Vitest testing framework. The patterns presented in this post are also applicable to other JavaScript apps and frameworks.

Implementing end-to-end encryption on top of Convex to build a secret-sharing app.

Use Convex to fetch an image from OpenAI’s image generation service based on a user-provided prompt.

Building multiplayer games requires a lot of synchronization logic and event systems. However, using Convex, we get a lot of this for free! Follow along here as we build a complex multiplayer game on Convex, leveraging its reactive-by-default queries, transactional mutations, backend storage, and scheduled functions.

Implementing an "upvote" feature 4 ways with Convex.

Some patterns for incorporating presence into a web app leveraging Convex, and sharing some tips & utilities I built along the way.

Working with Convex has made our development workflow so much more streamlined—we no longer have to worry about the complexities of traditional frontend-backend communication, enabling us to build out the core of our new application portal at a blazing-fast speed.

Convex is a JS-powered database and backend for web apps that’s reactive — you can use it to create endpoints and queries that update automatically when data changes. Tom Ballinger will teach us how.

Reactivity has taken a dominant position today within web app development. Our components and app state are all reactive, and the world has adapted–most would argue, for the better. But has Convex gone too far? 😉 A new generation of serverless backends like Convex is recklessly spreading reactivity across our databases, server-side functions, and protocols, making global reactivity a new phenomenon. Shared global data is becoming reactive by default. Is this good for the world? In this video, Jamie Turner explores one circumstance where this pervasive reactivity poses a challenge, and he builds one useful abstraction for taming over-reactivity and turning it back into a strength.

How do I ensure my Convex database queries are fast and efficient? When should I define an index? What is an index? This document explains how you should think about query performance in Convex by describing a simplified model of how queries and indexes function.

Why does anything really need to run on the server anymore? And even if it does, do I, the developer, need to be so involved? Yes! Even in a serverless world, the backend computing context being a real, discrete environment that you have control and influence over is not only necessary but hugely beneficial.

While making Fast5, Convex's wordle-style multiplayer racing game, we ran into several interesting challenges. This week, let's dig into managing the combination of local and global state.

At Convex, we're creating a platform for managing global state for web developers. Unsurprisingly, we've found one of the best ways to improve our platform is to actually build stuff with it!

Sujay (@sujayakar314) walks through how easy it is to build a dynamic web app with global state on Convex. Join the Convex beta at https://convex.dev.