5Planning for Scale and Resiliency

This chapter looks at the concept of “scaling our applications” that are hosted in the AWS cloud. Scaling is the secret sauce for all public cloud providers: everybody has this feature, and everybody uses this feature. Every application that you like to use on your phone or tablet is controlled by some elements of scale. If your application is slow, perhaps it’s because there are too many users currently accessing the application. If your application has decent performance, the odds are that the application is being carefully monitored, and resources are being added or removed based on demand.

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