Summary
• High Availability vs Scalability (vertical and horizontal) vs Elasticity vs Agility in the Cloud
• Elastic Load Balancers (ELB)
Distribute traffic across backend EC2 instances, which can be Multi-AZ
Supports health checks
4 types: Classic (old), Application (HTTP – L7), Network (TCP – L4), Gateway (L3)
• Auto Scaling Groups (ASG)
Implement Elasticity for your application, across multiple AZ
Scale EC2 instances based on the demand on your system, replace unhealthily
Integrated with the ELB
Last updated