📈
High Availability & Scalability
Section 6 of 30
Elastic Load Balancing (ALB, NLB, GWLB) and Auto Scaling Groups for resilient and scalable architectures
90 min•intermediate
🎯
Key Takeaways
- •Vertical scaling increases instance size; horizontal scaling adds more instances
- •High Availability runs applications across multiple AZs to survive datacenter failures
- •ALB works at Layer 7 (HTTP/HTTPS), NLB at Layer 4 (TCP/UDP), GWLB at Layer 3 (IP)
- •Auto Scaling Groups automatically adjust capacity based on demand using scaling policies
- •Target tracking, step scaling, and scheduled scaling policies provide different automation strategies
📝Personal Notes
Ready to test your knowledge?
Take the quiz to reinforce what you've learned