"We’ve been through a few metrics products. When you try to break data down by high-cardinality fields like customer appIDs, or even host IDs, it just kind of breaks their UIs and increases cost many times because everything is stored individually. We've been told so many times that logging customer ID was impossible and our vendors throttle us or complain, but Honeycomb just handles that. When investigating a problem, I want to know if it’s caused by a particular customer. Being able to break down metrics on higher-cardinality fields gives very actionable insights. We never dug into it on a per-app basis because we just couldn't."