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Building an Automated Safety Timer Worker in Node.js

Building an Automated Safety Timer Worker in Node.js: Preventing Race Conditions with Atomic State Transitions The Stakes: Why Meeting Timers Need Authoritative Backends When building CasualMeet, one of our core...

How to Turn a React (Vite) App into an Android APK with Capacitor

Turning a React app into an Android app sounds like it should take an afternoon. The first part does: a few commands, and your app runs inside a phone. The...

Setting Up PostGIS on Supabase: A Beginner’s Guide

“Show me the coffee shops near me.” “Find users within 10 km.” “Which stores are closest to this address?” If your app answers questions like these, you need a database...

Express API Security: IDOR and Mass Assignment Explained

Most API security bugs don’t come from clever hackers. They come from a route that quietly trusts the request. I ran into this while building the backend for a meetup...

How I Detect Phone Numbers and Payment Details in Chat Messages

How I Detect Phone Numbers and Payment Details in Chat Messages In a meetup app, chat is where things go wrong. Someone sends a phone number in the first message....

How I Built Real-Time Chat in React with Socket.IO

I recently built a chat feature for a meetup app. The stack is React on the front, Express and MongoDB on the back, and Socket.IO to connect them. A basic...

Implementing JWT Authorization with User Moderator and Admin Roles in Node.js

Implementing JWT Authorization with User Moderator and Admin Roles in Node.js I’m building a local meetup app, and pretty early on it became clear that a simple “logged in or...

Building a Multi-Platform React App with Capacitor (Web Mobile & Admin)

Building a Multi-Platform React App with Capacitor (Web Mobile & Admin) I’m building a local meetup app, and early on I ran into a problem that a lot of solo/small-team...