# DecisionRules Server

{% hint style="success" %}
Production Container
{% endhint %}

## Introduction

The DecisionRules Server is the main backend application of the platform. It powers rule evaluation, management APIs, background processing, licensing, and communication with the client application.

Use this container when you deploy DecisionRules in Docker, Kubernetes, or other On-Premise environments. It exists to provide the core runtime and API layer behind the DecisionRules UI and integrations.

The server requires these supporting services:

* [MongoDB](https://www.mongodb.com/) for persistent data storage
* [Redis Cache](https://redis.io/) for caching and internal processing
* a valid license key or offline license
* network access to required DecisionRules services when using online licensing

## Setup

### Where to get it

You can download the latest production image from Docker Hub:

* [DecisionRules Server on Docker Hub](https://hub.docker.com/r/decisionrules/server)

### Before you start

Before you run the server, make sure you have:

* a running MongoDB instance
* a running Redis instance
* a valid license key
* enough resources for your workload

See also:

* [#server-required](https://docs.decisionrules.io/doc/other-deployment-options/docker-and-on-premise/containers-environmental-variables#server-required "mention")
* [prerequisites](https://docs.decisionrules.io/doc/other-deployment-options/docker-and-on-premise/prerequisites "mention")
* [offline-license](https://docs.decisionrules.io/doc/other-deployment-options/docker-and-on-premise/offline-license "mention")

### Minimal Requirements

* 1GB memory per worker thread

### Application info

* Default port: 8080
* Port for preflight: 8081

### How to run it

You can run the container directly with `docker run` or through `docker compose`.

**Method 1: Run with `docker run`**

Pull the latest image:

```bash
docker pull decisionrules/server
```

Run the container:

```bash
docker run -d \
  -p 8080:8080 \
  -p 8081:8081 \
  -e WORKERS_NUMBER=1 \
  -e REDIS_URL=YOUR_REDIS_URL \
  -e MONGO_DB_URI=YOUR_MONGODB_URL \
  -e CLIENT_URL=http://localhost:80/#/ \
  -e LICENSE_KEY=YOUR_LICENSE_KEY \
  -v license:/assets/lic/ \
  decisionrules/server
```

**Method 2: Run with `docker compose`**

Create a `docker-compose.yml` file:

```yaml
version: "1.0"

services:
  server:
    image: decisionrules/server
    environment:
      - "REDIS_URL=YOUR_REDIS_URL"
      - "MONGO_DB_URI=YOUR_MONGO_URI"
      - "CLIENT_URL=YOUR_CLIENT_URL"
      - "LICENSE_KEY=YOUR_LICENSE_KEY"
    ports:
      - "8080:8080"
      - "8081:8081"
    volumes:
      - license:/assets/lic/:rw

volumes:
  license:
    driver: local
```

Start it with:

```bash
docker compose up
```

#### What to check after startup

The server must be reachable by the client application and other services that depend on it.

To verify that the server is running, open:

```
SERVER_URL/health-check
```

You should receive an HTTP `200 OK` response.

{% hint style="info" %}
Some environment variables are optional. For the full list, see [Environment Variables](https://docs.decisionrules.io/doc/other-deployment-options/docker-and-on-premise/containers-environmental-variables).
{% endhint %}