Data Glossary 🧠
What is a Metrics Layer?
Similarities to a Semantic Layer
The metrics layer is one component of a Semantic Layer. A limited metrics layer is usually built into a BI tool, translating its metrics to only that BI tool.
A metrics layer, sometimes also called a metrics store, includes a specification of metrics such as measures and dimensions. Additionally, it can contain model parsing from files (mostly YAML) and APIs to create and execute metric logic; some include a cache layer. A metrics layer encourages us to enforce the DRY (Do not repeat yourself) principle by defining metrics once before populating them to any BI tools used or integrating them into internal applications or processes.
Read more on Semantic Layer or The Rise of the Semantic Layer.