Long-Term Prometheus Data Storage with Cortex

Prometheus is the standard application when it comes to monitoring, alerting, and trending, but the software is slow when faced with a large volume of historical data. Cortex comes to the rescue and offers cluster support, as well.

By Martin Loschwitz

Updated Jul 2, 2026 1:54 PM / Published Apr 10, 2026 3:00 AM 14 min read

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Martin Loschwitz

Martin Loschwitz is the founder and managing director of True West IT Services GmbH, which offers scalable IT infrastructure based on OpenStack and Kubernetes.