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Why does the Prometheus monitoring query return the data of the last five minutes?

The Prometheus monitoring query returns data for the last five minutes by default due to its time range configuration settings. Prometheus is designed to provide real-time monitoring and alerting capabilities, and the default time range ensures that users can quickly access the most recent metrics without needing to specify a time range each time they query the data.

For example, when you execute a query like rate(http_requests_total[5m]), Prometheus retrieves the rate of HTTP requests over the past five minutes. This default setting allows for efficient querying of recent performance data, which is crucial for monitoring system health and troubleshooting issues in real-time.

If you need to query data over a different time range, you can adjust the time range in your query or through the Prometheus UI. For instance, you can use rate(http_requests_total[1h]) to get the rate of HTTP requests over the past hour.

In the context of cloud services, Tencent Cloud offers monitoring solutions that integrate with Prometheus, allowing users to leverage its powerful querying capabilities for monitoring cloud resources and applications.