DevOps
Scaling ECS: Auto Scaling and Capacity Providers
Service Auto Scaling
Console: Service > Update > Scaling > Set min/max/desired.
Policy: Target tracking on CPU (e.g., 70%).
CLI example:
aws application-autoscaling register-scalable-target --service-namespace ecs --resource-id service/my-cluster/my-service --scalable-dimension ecs:service:DesiredCount --min-capacity 1 --max-capacity 10
aws application-autoscaling put-scaling-policy --policy-name cpu70 --service-namespace ecs --resource-id service/my-cluster/my-service --scalable-dimension ecs:service:DesiredCount --policy-type TargetTrackingScaling --target-tracking-scaling-policy-configuration '{ "TargetValue": 70, "PredefinedMetricSpecification": { "PredefinedMetricType": "ECSServiceAverageCPUUtilization" } }'Capacity Providers (EC2)
For EC2 launch type: Create ASG, then capacity provider.
For Fargate, auto-handled.
Test: Use tools like Apache Bench to load test.
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