What is the data model of the Prometheus system like?

The data model of the Prometheus system is based on a time series data model. It uniquely identifies each time series with a set of label key-value pairs and stores the sample data of the time series. In the Prometheus data model, each time series corresponds to a metric, which is a specific type of data such as CPU utilization, memory usage, etc. Each sample data includes a timestamp and its corresponding value. Users can query and analyze time series data using the PromQL query language. The entire data model revolves around time series, flexibly supporting the storage and analysis of various monitoring metrics.