> For the complete documentation index, see [llms.txt](https://docs.coronasafe.network/coronasafe-care-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.coronasafe.network/coronasafe-care-documentation/care-persistence/care-persistence-layer.md).

# CARE Persistence Layer

The persistence layer is where data about all aspects of CARE are stored, they include data about Hospitals, Doctors/Nurses, Medical Equipment, Patients, etc. There are different types of persistence stores that have different technical capabilities. Much of the data is stored in a Postgres Relational Database or RDBMS. The mapping data for displaying maps on dashboards are stored in PostGIS, a GIS extension of the Postgres database.

### Postgres Database

CARE uses a Postgres Database with Read-replicas that power analytics engines where data is frequently accessed, but not written

### **PostGIS**

In order to allow geocoding of entities in the Postgres Database, CARE uses PostGIS**.**

### **Redis Cache**

CARE uses Redis to work as a cache as well as power any scheduled tasks/queues**.**

### **Object Storage**

Care can use any Object Storage solution that follow**s** S3 specifications for storing patient files and other assets/artifacts.