How to configure the interval per query?

[Idosegal]

Hi,
The way to configure the time interval is to use the ttl?
In case I want a custom query to run every 15 min do I need to configure the ttl to 900?

[Vonng]

Prometheus uses a pull-based model where it periodically scrapes metrics from targets, so what you should configure is Prometheus's scrape interval.

The TTL (Time-To-Live) in the exporter is designed to prevent expensive queries from being executed too frequently. It's essentially a cache duration for query results.

Typically, TTL should be aligned with your Prometheus scrape interval. However, for particularly slow queries, you probably don't want them running every 10-15 seconds — instead, set their TTL to a few minutes to reduce load on your database.
In other words:

Scrape interval: How often Prometheus pulls metrics (e.g., 15s)
TTL: How long cached query results remain valid before re-execution