Handling High Traffic API with NestJS

How to design and scale high traffic backend APIs using NestJS, Redis caching, and clean system architecture.

Building APIs that handle high traffic is one of the biggest challenges

in backend engineering.

In real-world production systems, traffic spikes, slow queries, and

single points of failure are common problems.

### What I Focus On

- Stateless API design

- Redis caching for hot data

- Load balancing & horizontal scaling

- Database optimization & indexing

- Background jobs for heavy tasks

By combining these strategies, I’ve handled APIs serving millions of

requests per day while maintaining stability and performance.