Serverless functions let you run code without managing servers. Pay only for execution time, scale automatically, and focus on business logic.
AWS Lambda Basics#
Loading code block...
Vercel Serverless Functions#
Loading code block...
Vercel Edge Functions#
Loading code block...
Cold Start Optimization#
Loading code block...
Environment and Secrets#
Loading code block...
Request Validation#
Loading code block...
Error Handling#
Loading code block...
Middleware Pattern#
Loading code block...
Testing Serverless Functions#
Loading code block...
Deployment#
Loading code block...
Best Practices#
Performance:
✓ Initialize outside handler
✓ Use connection pooling
✓ Keep functions small
✓ Set appropriate timeouts
Security:
✓ Validate all inputs
✓ Use secrets manager
✓ Implement proper auth
✓ Set least-privilege IAM
Cost:
✓ Optimize memory settings
✓ Use provisioned concurrency wisely
✓ Monitor execution duration
✓ Clean up resources
Conclusion#
Serverless functions simplify deployment and scaling. Focus on cold start optimization, proper error handling, and security. Test locally with tools like SAM or serverless-offline before deploying.