Scaling Spring Boot with Auto Scaling Group (ASG) + Elastic Load Balancer (ELB)

Deploying a Spring Boot app on multiple EC2 instances with an Application Load Balancer (ALB) works great ✅ But what happens when traffic spikes? Or if one EC2 instance crashes? 👉 That’s where Auto Scaling Groups (ASG) step in. By the end of this gu...