Cianplan

Level 4: Reliability, security & cloud · L4.6 AWS architecture decisions (SAA-C03)

Elastic compute and paying less for it

Configure EC2 Auto Scaling policies, choose On-Demand, Savings Plans, Reserved Instances and Spot, plus Lambda, Fargate or EC2, for a workload's shape, and hibernate an instance that must keep its memory.

13 min · Pro

What you take away

  • An Auto Scaling group spreads stateless instances across Availability Zones behind a load balancer and keeps the count between min and max; target tracking on a metric that falls as you add instances is the default policy.

And 4 more inside the class, in Pro.

How the class is laid out

  1. The problem
  2. Scaling the fleet
  3. Paying for it
  4. Check your understanding