Handling 500 Million Clicks with a $4 VPS

Accidental Viral Success

• 💡 A simple lizard click website, created in just 10 minutes based on a TikTok trend, unexpectedly went viral.
• 🚀 Within 24 hours, the site garnered over a million unique visitors and 300 million API requests.
• 📈 The project, lizard.click, eventually handled over 600 million clicks in about 15 days.

Initial Scaling Challenges

• 💸 The initial setup on a $4/month DigitalOcean VPS with Express.js and SQLite struggled under the load.
• ⚠️ Response times skyrocketed to 10-15 seconds, with many requests timing out and clicks not being recorded.
• 📊 The server experienced hundreds of requests per second, leading to storage issues from piling EngineX access logs.

Why the Web Platform?

• 🌐 The speaker chose the web over mobile apps for its ability to move fast and implement instant updates.
• ✅ This approach avoids the red tape, approval processes, and fees associated with app stores.
• 🛠️ The web offers ownership of domain, server, and code, allowing developers to push updates freely.

Refactoring for Efficiency

• 🧠 Instead of just upgrading the server, the speaker refactored the database interaction to keep click counts in memory.
• 🔄 Database updates were changed from per-request to periodic writes (every few seconds), significantly reducing CPU, memory, and disk I/O.
• 📉 This optimization allowed the application to scale back down to the $4/month VPS, handling over 2,000 requests per second at its peak.

Rethinking Modern Scaling

• 🚫 The speaker challenges the notion that all projects need immediate, complex scaling solutions like serverless or edge computing.
• 💰 Argues that most personal projects can thrive on a cheap $4/month VPS without incurring "surprise pricing" from free-tier jumps.
• 🎯 A fixed-cost VPS provides predictable spending compared to potentially expensive usage-based cloud platforms for viral spikes.

The Value of Simplicity

• 🛑 The speaker declined feature requests to preserve the site's original, simple purpose.
• ✨ Advocates for building single-function websites reminiscent of the early internet, focusing on personal expression rather than monetization.
• 💖 Emphasizes that web development can be a learning experience and a way to contribute to a more diverse and less "walled garden" internet.