Practical: How would we build Airbnb, Twitter, or Reddit?

Practical: How would we build Airbnb, Twitter, or Reddit?

In this episode, Scott and Wes are trying something new! It’s called Practical, in which Scott and Wes take a topic and flesh out all the theory into something super practical. Today’s topic comes from a listener question asking how they would build a simple version of a modern web app like Twitter, Reddit, or Airbnb. Netlify - Sponsor Netlify is the best way to deploy and host a front-end website. All the features developers need right out of the box: Global CDN, Continuous Deployment, one click HTTPS and more. Hit up netlify.com/syntax for more info. Sanity - Sponsor Sanity.io is a real-time headless CMS with a fully customizable Content Studio built in React. Get a Sanity powered site up and running in minutes at sanity.io/create. Get an awesome supercharged free developer plan on sanity.io/syntax. Show Notes 3:03 - Backend Express Node GraphQL MongoDB 14:45 - Frontend React Next.js Styled components Stay as close to real CSS as possible 22:39 - Deployment process Serverless Now Ideally one app that handles everything 28:38 - Email Syntax Ep 32: Designing, Templating, Inlining and Sending Email mjml Juice Inky Nodemailer Postmark Mailjet Mandrill Get everyone set up and working in two different systems, so you can switch easily if something goes wrong 33:32 - Users / Auth / Cookies / Permissions Use something a pre-existing package or service rather than role your own (though it can get expensive quickly) Passport Auth0 accounts-js 38:48 - Images Cloudinary imgIX 41:50 - Other things to be aware of Handling cash Stripe PayPal Braintree Recurly Queueing Links Ruby on Rails Django Meteor MySQL PHP Postgres Mongoose Drip ConvertKit Feathers David Luecke Tweetdeck Next.js react-router Reach Router Gatsby Digital Ocean Heroku Redux Svelte Gridsome Mailchimp ××× SIIIIICK ××× PIIIICKS ××× Scott: K-Safe Wes: Bon Appetit YouTube Channel Shameless Plugs Scott: Svelte Course Coming Soon! - Sign up for the year and save 25%! Wes: Flexbox.io Course Tweet us your tasty treats! Scott’s Instagram LevelUpTutorials Instagram Wes’ Instagram Wes’ Twitter Wes’ Facebook Scott’s Twitter Make sure to include @SyntaxFM in your tweets

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980: AI Coding Explained

980: AI Coding Explained

Wes and Scott talk about the state of AI coding in 2026—from editors and models to agents, skills, slash commands, MCPs, and more. They unpack what these things actually do, how they overlap, and how ...

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979: WebMCP: New Standard to Expose Your Apps to AI

979: WebMCP: New Standard to Expose Your Apps to AI

Scott and Wes unpack WebMCP, a new standard that lets AI interact with websites through structured tools instead of slow, bot-style clicking. They demo it, debate imperative vs declarative APIs, and s...

16 Helmi 16min

978: Should A New Coder Use AI?

978: Should A New Coder Use AI?

Wes and Scott answer your questions about AI agents, learning to code with AI, pagination patterns, skilling up from outdated tech stacks, balancing side projects with family life, real-world hacking ...

11 Helmi 1h 2min

977: We built a CSS Challenge platform

977: We built a CSS Challenge platform

Scott and Wes break down how they built SynHax, the real-time CSS Battle app powering the upcoming Mad CSS tournament. From SvelteKit and Zero to diffing algorithms, sync conflicts, and a last-minute ...

9 Helmi 41min

976: Pi - The AI Harness That Powers OpenClaw W/ Armin Ronacher & Mario Zechner

976: Pi - The AI Harness That Powers OpenClaw W/ Armin Ronacher & Mario Zechner

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975: What’s Missing From the Web Platform?

975: What’s Missing From the Web Platform?

Scott and Wes run through their wishlist for the web platform, digging into the UI primitives, DOM APIs, and browser features they wish existed (or didn’t suck). From better form controls and drag-and...

2 Helmi 50min

974: Clawdbot (Moltbot), Agents and the Age of Personal Software

974: Clawdbot (Moltbot), Agents and the Age of Personal Software

Wes and Scott talk about building hyper-specific personal software with AI. They explore personal agents, home automation, JSON-as-a-database, and how LLMs unlock fast, custom apps that reduce frictio...

28 Tammi 46min

973: The Web’s Next Form: MCP UI (with Kent C. Dodds)

973: The Web’s Next Form: MCP UI (with Kent C. Dodds)

Scott and Wes sit down with Kent C. Dodds to break down MCP, context engineering, and what it really takes to build effective AI-powered tools. They dig into practical examples, UI patterns, performan...

26 Tammi 48min

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