Scalable Web App with ALB + ASG

Architecture

Features

• Auto-scaling EC2 instances
• Application Load Balancer
• Multi-AZ deployment
• CloudWatch monitoring
• Optional RDS database

Deployment Options

Terraform

cd infrastructure/terraform
terraform init
terraform apply

CloudFormation

aws cloudformation deploy \
  --template-file infrastructure/cloudformation/webapp-stack.yaml \
  --stack-name webapp \
  --capabilities CAPABILITY_IAM

Testing

Get ALB DNS name from AWS Console and test using:

ab -n 1000 -c 100 http://ALB-DNS/