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Implementing Cloud Design Patterns for AWS by Marcus Young

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Scale out pattern

We have discussed up to this point how to scale up in resources on an instance but not how to scale out. Scaling up an instance can only help in a few limited examples, but the more important issue is how to add processing power without affecting the client or the systems interacting with our services. To do this, we will tie together a few different EC2 resources. The resource diagram, as shown, will help to visualize what we are trying to accomplish:

Scale out pattern

The general process for this pattern is:

  • Create an elastic load balancer with forwarding ports and health checks
  • Create a launch configuration for the instance
  • Create an auto scaling ...

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