Amazon CloudWatch monitors your Amazon Web Services (Amazon Web Services) resources and the applications you run on Amazon Web Services in real time. You can use CloudWatch to collect and track metrics, which are the variables you want to measure for your resources and applications.
CloudWatch alarms send notifications or automatically change the resources you are monitoring based on rules that you define. For example, you can monitor the CPU usage and disk reads and writes of your Amazon EC2 instances. Then, use this data to determine whether you should launch additional instances to handle increased load. You can also use this data to stop under-used instances to save money.
In addition to monitoring the built-in metrics that come with Amazon Web Services, you can monitor your own custom metrics. With CloudWatch, you gain system-wide visibility into resource utilization, application performance, and operational health.
The resolved configuration of CloudWatchClient class. This is resolved and normalized from the constructor configuration interface.
Destroy underlying resources, like sockets. It's usually not necessary to do this. However in Node.js, it's best to explicitly shut down the client's agent when it is no longer needed. Otherwise, sockets might stay open for quite a long time before the server terminates them.