# SREDay London

> Unwiring High Cardinality

Source: https://last9.io/events/sreday-london/

Catch [Piyush Verma](https://www.linkedin.com/in/meson10/), Co-founder and CTO at Last9, at SREday London for a talk on **Unwiring High Cardinality** — how to stop treating cardinality as a tax and start scaling metrics into the millions without your monitoring stack falling over.

### What you'll learn

- **The anatomy of a metric** — what actually drives cardinality growth, and why "just add a label" is a load-bearing decision.
- **Cardinality as a scaling problem, not a quota problem** — patterns for handling millions of unique series instead of capping out at thousands.
- **Reducing toil for the SRE team** — practical approaches that let engineers debug the production behaviour they actually care about without fighting their tooling.

Stop by if you're running monitoring at scale, picking a TSDB, or just tired of being told to drop labels you actually need.