# System Architecture

![](https://2040480973-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2Finternal%2F-LydTkYF0javd3yUewZu%2F-LydZiVjzlAQfhK2omed%2Fsystem_architecture_v0.2.png?generation=1579098004683694\&alt=media)

### Containers

#### medco-connector

Component orchestrating the MedCo query at the clinical site. Implements the resource-side of the PIC-SURE API. It communicates with *medco-unlynx* to execute the distributed cryptographic protocols. [Sources on GitHub](https://github.com/ldsec/medco-connector).

#### medco-unlynx

The software executing the distributed cryptographic protocols, based on Unlynx. [Sources on GitHub](https://github.com/ldsec/medco-unlynx).

#### glowing-bear-medco

Nginx web server serving Glowing Bear and the javascript crypto module. [Sources on GitHub](https://github.com/ldsec/glowing-bear-medco).

#### medco-loader

ETL tool to encrypt and load data into MedCo. [Sources on GitHub](https://github.com/ldsec/medco-loader).

#### i2b2

The i2b2 stack (all the cells). [Project website](https://www.i2b2.org/).

#### keycloak

OpenID Connect identity provider, providing user management and their authentication to MedCo. [Project website](https://www.keycloak.org/).

#### postgresql

The SQL database used by all other services, contains all the data. [Project website](https://www.postgresql.org/).

#### pg-admin

A web-based administration tool for the PostgreSQL database. [Project website](https://www.pgadmin.org/).

#### nginx

Web server and (HTTPS-enabled) reverse proxy. [Project website](https://www.nginx.com/).