tl,dr:<p>Speaking to The Register, Roman Khavronenko, co-founder of VictoriaMetrics, said the previous system had experienced problems with high cardinality, which refers to the level of repeated values – and high churn data – where applications can be redeployed multiple times over new instances.<p>Implementing VictoriaMetrics as backend storage for Prometheus, the CMS monitoring team progressed to using the solution as front-end storage to replace InfluxDB and Prometheus, helping remove cardinality issues, the company said in a statement.