Course description

In this practical lab, you will explore session stickiness using an AWS Application Load Balancer (ALB) and Auto Scaling Group. Starting with a CloudFormation template, you'll provision a demo environment with multiple EC2 instances running custom web servers. You'll verify load distribution across instances, enable ALB-managed session cookies, and observe how sticky sessions lock user traffic to a specific backend instance. You'll then simulate instance failure to test failover and session migration, and finally disable stickiness to restore round-robin distribution. By the end, you'll understand how session stickiness works in production, how to configure it, and its impact on high availability and user experience.

Additionally, all learners receive dedicated online support through our Slack workspace where you can ask questions, get troubleshooting help, and interact with our team throughout the entire project.

Click here to access Slack workspace link

What will i learn?

• Provision a multi-instance web environment using CloudFormation
• Verify load distribution across an ALB target group
• Enable and configure ALB session stickiness with managed cookies
• Test sticky session behavior and inspect session cookies
• Simulate instance failure and observe failover behavior
• Disable stickiness and validate return to round-robin distribution
• Clean up AWS resources using CloudFormation

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