Observability · Flashcard
What is the purpose of a Prometheus client library?
- ATo instrument app code and expose its own metrics
- BTo scrape the remote targets and store their samples
- CTo route fired alerts to the correct receivers
- DTo render dashboards from stored time series
Why this is the answer
Client libraries let application code define and expose metrics on /metrics for scraping. Scraping is the server's job, and alert routing belongs to Alertmanager.
Official docs