# Architecture principles whose scope is data access

> 3 records

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

## Entries

- [CQRS](https://banes-lab.com/records/architecture/command-query-responsibility-segregation.md): A design pattern that separates the model that handles commands from the model that answers queries.
- [Caching](https://banes-lab.com/records/architecture/caching.md): A design pattern that stores the result of an expensive read or computation under a key derived from every input it depends on, and serves it again while that key matches.
- [Authorization](https://banes-lab.com/records/architecture/authorization.md): A mechanism that decides, from a policy, whether an authenticated principal may perform an action on a resource.