Principles of Scalability, Availability, and Reliability

1. Scalability:
   • Implement a load balancer using tools like Nginx or HAProxy to distribute traffic.
   • Create a script to simulate increasing traffic and observe how horizontal scaling affects performance.
2. Availability:
   • Design and implement a failover mechanism for a database using read replicas.
   • Perform manual failover testing to ensure availability during primary database downtime.
3. Reliability:
   • Implement a retry mechanism in an HTTP client to handle transient failures.
   • Add idempotency logic to an API endpoint to ensure consistent behavior during retries.