# Architecture principles whose scope is measurement

> 1 record

This index as JSON: https://banes-lab.com/json/api/facets/architecture/scope/measurement

## Entries

- [Single Aggregate](https://banes-lab.com/records/architecture/single-aggregate.md): A rule or precondition that a shared measurement keeps one aggregate, overwritten by each run that can honestly replace it, while a run that cannot streams its verdict instead of writing a second report.