Juan Beldi

Blog

Writing

Notes on frontend engineering: Next.js, React, performance and the web platform.

The title screen of Kessler Drift.40

Oct 23, 20261,688 words8 min read

Building Kessler Drift with a team of AI agents

The honest story of building a pixel-art Zuma-like roguelite with AI agents: the team, the decision log, the ideas the numbers killed, what QA caught and what fell short.

  • AI
  • Game dev
n8n and Coolify thumbnail313

Sep 1, 20261,921 words9 min read

How to self-host n8n on Coolify (with PostgreSQL and webhooks that work)

Deploy n8n on Coolify with PostgreSQL, get webhooks working behind Traefik or a Cloudflare Tunnel, and keep it healthy. No execution limits.

  • Self-hosting
  • Coolify
  • n8n
Cloudflare and Coolify thumbnail332

Aug 26, 20261,096 words5 min read

Exposing Coolify apps through a Cloudflare Tunnel

How to create a Cloudflare Tunnel, install the connector on your server and route your domains through it to Coolify, so your apps go online without a single open port.

  • Self-hosting
  • Coolify
  • Cloudflare
Coolify thumbnail401

Aug 19, 20261,183 words6 min read

Self-hosting Coolify on your own server

A step-by-step guide to installing Coolify on any Linux VPS, using a fresh Debian server as the example: serve it from your own domain over HTTPS and deploy your first app.

  • Self-hosting
  • Coolify
  • Docker
Next.js thumbnail121

Sep 16, 2025258 words4 min read

Using <picture> in Next.js for responsive images

A short guide on how to optimize images using the picture element in Next.js

  • Next.js
  • Performance
Next.js and directus thumbnail221

Sep 16, 2025613 words6 min read

On-Demand Revalidation using Next.js and Directus

A guide on how to use one of the most powerful tools in Next.js currently, on-demand revalidation, and connecting it with Directus.

  • Next.js
  • CMS