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CloudWatch

CloudWatch has come a long way since we published Programming Amazon EC2 in early 2011. The core of the service is still the same: two weeks of data with various metrics. By default, the measurements are taken every 5 minutes, but you can enable detailed metrics to take them every minute. You can configure it per EC2 instance. (Elastic Beanstalk gives you this choice as well.) CloudWatch is very helpful in understanding behavior and performance. Most other services (RDS, ELB) come with CloudWatch metrics as well.

The first addition that we are very happy with is CloudWatch support in the Console. It will take you a while to get intimate with this part of the Console. But it is very much easier than just the cmdline; a list of numbers is not very informative for most of us. CloudWatch in the Console gives you a good, visual way to delve into your metrics.


  

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