Building 100 Micro-Frontends: Lessons from a Solopreneur Journey
When I set out to build my portfolio, I didn't just want a single monolithic app. I wanted to prove a point: one developer can ship 100 independently deployed applications using modern tooling and a disciplined architecture.
The Architecture
Each micro-frontend is a standalone Next.js application with its own:
- Repository and deployment pipeline
- Custom domain or subdomain
- Independent versioning and release cycle
- Separate analytics and error tracking
Why Micro-Frontends?
Independence
Each app can be updated, rolled back, or rebuilt without affecting any other. When I experiment with a new framework or pattern, I can test it in one app first.
Performance
Small bundles load fast. Most of my tools are under 100KB gzipped. No bloated mega-bundle serving unused code to every visitor.
Learning
Building 100 apps taught me more than building one big one. Each project is a chance to explore a different pattern: MDX blogs, canvas-based tools, real-time dashboards, AI integrations.
The Tech Stack
Every project shares a common foundation:
- Next.js 15 with App Router
- TypeScript for type safety
- Tailwind CSS for styling
- Vercel for deployment
But each project is free to add its own dependencies based on its needs.
Key Trade-offs
The Good
- Zero cross-app breakage
- Deploy in seconds, not minutes
- Easy to archive or sunset projects
The Challenging
- Shared component libraries require discipline
- Authentication must be solved once and reused
- Analytics aggregation across 100 domains
What I'd Do Differently
If I started over, I would:
- Create a shared design system package from day one
- Set up a monorepo with Turborepo earlier
- Automate more of the project scaffolding
The Numbers
- 100 independently deployed apps
- 9 categories (tools, productivity, content, creative, business, social, AI & data, misc, client work)
- ~4.5s total build time per app
- 0 cross-app production incidents
The best architecture is the one that lets you ship consistently. For a solopreneur, that means independence, speed, and the freedom to experiment without fear.