How I Built a Cloud Storage Platform from Scratch

July 2026 · 5 min read

I've always been fascinated by cloud storage services like Google Drive and Dropbox. So I decided to build my own — MyCloud. In this article I'll walk you through the tech stack, the challenges, and what I learned.

Choosing the Stack

I wanted a modern frontend that felt fast, so I picked SvelteKit. For the backend, I used Supabase — it gave me auth, a database, and storage out of the box. But when I needed massive file uploads, I integrated Cloudflare R2 with presigned URLs.

File Versioning & Sharing

One of the trickiest parts was implementing file versioning. I added a separate table to track old versions and updated the upload logic to handle collisions. Sharing with other users required a new endpoint that looked up emails via Supabase's admin API.

Deployment & Domain

I deployed the app on Vercel with a custom domain (cloud.djkoast.com). The portfolio site was built separately and deployed on the root domain. Both are completely free.

This project taught me a ton about authentication, Row‑Level Security, and working with S3‑compatible storage. I'm already planning my next project!