In this article on What are the Metrics that CloudWatch Uses, we will discuss the metrics used by AWS CloudWatch.
Amazon CloudWatch is a monitoring and observability service provided by Amazon Web Services (AWS) that collects and stores metrics, logs, and events from AWS resources and applications. The following list shows some of the metrics that CloudWatch uses.
- CPU Utilization: This metric measures the percentage of allocated compute units that are currently in use on an EC2 instance.
- Network In/Out: These metrics measure the incoming and outgoing network traffic of an EC2 instance.
- Disk Reads/Writes: These metrics measure the number of disk read and write operations performed on an EC2 instance.
- Request Count: This metric measures the number of requests made to an Elastic Load Balancer (ELB).
- Latency: This metric measures the time it takes for an ELB to respond to a request.
- HTTP Status Codes: These metrics measure the number of requests that resulted in a specific HTTP status code (such as 200, 404, or 500) on an ELB.
- Database Connections: These metrics measure the number of database connections on an RDS instance.
- Free Storage Space: This metric measures the amount of free storage space available on an EBS volume.
- Lambda Function Metrics: CloudWatch also provides metrics for Lambda functions, such as the number of invocations, duration, and errors.
CloudWatch also supports custom metrics, which allow you to monitor and collect metrics from your own applications and services. Additionally, CloudWatch Logs provides metrics related to log data, such as the number of log events processed and the amount of data ingested.
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