Manual Scaling
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2h 49m

This section of the Solution Architect Associate learning path introduces you to the core computing concepts and services relevant to the SAA-C03 exam. We start with an introduction to the AWS compute services, understand the options available and learn how to select and apply AWS compute services to meet specific requirements. 

Want more? Try a lab playground or do a Lab Challenge

Learning Objectives

  • Learn the fundamentals of AWS compute services such as EC2, ECS, EKS, and AWS Batch
  • Understanding how load balancing and autoscaling can be used to optimize your workloads
  • Learn about the AWS serverless compute services and capabilities

Now you might be wondering why we would ever need to get our hands dirty with something that should be automatic. The whole point of this service is to let things elastically scale based on the needs of the system.

Well, a prime example that comes to mind is if you know you are about to experience a large spike in traffic. This is a perfect time to get ahead of the problem and manually adjust your desired number of instances within your auto scaling group. By having your fleet already scaled up ahead of a large surge of traffic, you can prevent your users from having a bad experience. 

These types of scenarios often come up when a new marketing campaign has been launched. For example, if you were to run an ad during a major sporting event that has millions of viewers, you would probably want to get your fleet pumped up ahead of time. The longer a user has to wait for your webpage or application to load, the more likely they are to leave.  And if you just spent millions of dollars to get them there in the first place, that's not going to look good when your boss comes knocking.

So in this scenario, Not only would you adjust your desired number of instances within your fleet, you would also want to increase the maximum and minimum numbers available as well. And when you know the surge has died down, you can go back and return the numbers back to their normal levels.

The pros of manually scaling your auto scaling groups is that you can get ahead of an event before it takes place. It allows you to reduce downtime for your end users, and gives you the flexibility to manually dial back if you do find yourself over-provisioned.

The cons are this is not a scalable solution. Manually adjusting your scaling groups every day by hand is not what you want to be doing long term. It is for blue moon scenarios and planned large-scale events.


About the Author
Learning Paths

Stuart has been working within the IT industry for two decades covering a huge range of topic areas and technologies, from data center and network infrastructure design, to cloud architecture and implementation.

To date, Stuart has created 150+ courses relating to Cloud reaching over 180,000 students, mostly within the AWS category and with a heavy focus on security and compliance.

Stuart is a member of the AWS Community Builders Program for his contributions towards AWS.

He is AWS certified and accredited in addition to being a published author covering topics across the AWS landscape.

In January 2016 Stuart was awarded ‘Expert of the Year Award 2015’ from Experts Exchange for his knowledge share within cloud services to the community.

Stuart enjoys writing about cloud technologies and you will find many of his articles within our blog pages.