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Building Scalable Web Applications with Modern Architecture
How I approach designing web apps for scale, reliability, and maintainability.
1. Start with clear boundaries
Define domains and responsibilities early. Whether it is modular monolith or microservices, explicit boundaries reduce coupling and improve evolvability.
2. Data and caching strategy
Read-heavy systems benefit from layered caching (client → CDN → server). Design cache invalidation rules alongside your data model.
3. Async by default
Use queues and events for non-blocking work. This improves latency and isolates failures.
4. Observability
Tracing, structured logs, and metrics are non-negotiable. You can’t scale what you can’t see.
5. Frontend performance
Code-split, lazy load, and prefetch critical routes. Optimize images and animations for 60fps.