You have a web application running on six Amazon EC2 instances, consuming about 45% of resources on each instance. You are using auto-scaling to make sure that six instances are running at all times. The number of requests this application processes is consistent and does not experience spikes. The application is critical to your business and you want high availability at all times. You want the load to be distributed evenly between all instances. You also want to use the same Amazon Machine Image (AMI) for all instances. Which architectural choices should you make?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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You have a web application running on six Amazon EC2 instances, consuming about 45% of resources on
each instance. You are using auto-scaling to make sure that six instances are running at all times. The
number of requests this application processes is consistent and does not experience spikes. The
application is critical to your business and you want high availability at all times. You want the load to be
distributed evenly between all instances. You also want to use the same Amazon Machine Image (AMI)
for all instances. Which architectural choices should you make?

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