Prometheus-based monitoring is more than a metrics endpoint. For Prometheus alternatives, compare collection, queries, alerting, and operations as one system.
Pilot
- Scrape representative services with realistic labels and cardinality.
- Recreate the top recording rules, dashboards, and alerts; compare results over the same interval.
- Test missing targets, delayed samples, restarts, and alert recovery behavior.
- Measure retention cost, remote-write or export path, and access controls.
- Review how queries and labels would be migrated or rewritten.
A platform that stores metrics cheaply may still change when an alert fires. Run the two systems in parallel long enough to compare incident behavior.