Learn NESTJS with Real Code Examples
Updated Nov 25, 2025
Performance Notes
Leverages Node.js event loop for asynchronous tasks
Supports Fastify for high-performance HTTP
Scales horizontally with microservices
Optimized for TypeScript type safety
Minimal overhead compared to raw Express when structured properly
Security Notes
Use Guards for authentication/authorization
Validate requests with Pipes
Sanitize inputs to prevent injection attacks
Handle errors with Exception Filters
Secure APIs with HTTPS and tokens
Monitoring Analytics
Log requests and errors
Use metrics and tracing tools
Monitor performance via APM
Enable health checks for microservices
Integrate with monitoring dashboards (Prometheus/Grafana)
Code Quality
Follow TypeScript best practices
Use DI and modular design
Unit and integration tests
Lint and format consistently
Document APIs with Swagger