Scaling your Node.js backend for 1M+ users

Performance at Scale

Scaling Node.js requires a deep understanding of its event-driven architecture and the limitations of the single-threaded event loop.

Horizontal vs. Vertical Scaling

While vertical scaling (adding more RAM/CPU) is easy, it has a ceiling. Horizontal scaling (adding more instances) is the only way to reach 1M+ users.

Caching with Redis

Don't hit your database for every request. Use Redis to cache frequently accessed data.

Database Optimization

Ensure your queries are indexed. Slow queries are the #1 killer of application performance.