(J)Journal
Writing.
Notes on building products as a full-stack developer: architecture, APIs, AI integrations and real-time 3D on the web.
- #agents
- #ai
- #backend
- #ecommerce
- #fintech
- #nextjs
- #nodejs
- #performance
- #queues
- #react
- #realtime
- #threejs
- #typescript
- 2 min read
Real-time multiplayer for an AI game master
Lessons from DND AI: keeping a party together over Socket.IO when connections drop, budgeting tokens, and charging for credits on the server.
- 2 min read
An investing app where the AI must cite its evidence
Building PSX Investment OS: an immutable ledger, decimal arithmetic, and an AI layer that is only allowed to say what the data supports.
- 2 min read
A backup queue that retries without drama
How Database Vault uses BullMQ and Redis to run scheduled backups for six kinds of database, and the small decisions that keep a failed job from becoming a lost backup.
- 2 min read
An AI website builder that won't invent a business
Notes from building Website AI at VenueX: grounding the agent in real data, running long builds in the background, and making every change reversible.
- 3 min read
Building 3D product configurators that actually convert
What I learned shipping a house, a plank and a staircase configurator: where state lives, how the camera moves, and what happens after the customer clicks the button.
- 3 min read
3D on the web that degrades gracefully
How this site decides between a full WebGL scene, a lighter one, and a static SVG, and why three.js never loads on devices that can't use it.