docs/pages/backend/configuration.mdx

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---
title: 'Configuration'
---
# Backend Config Reference
The backend can be configured in 3 different ways:
- Make a `config.json` file in the working directory of the application (root of repository)
- Make a `.env` file in the working directory of the application (root of repository)
- Add environment variables to your system (or container)
These different config options are all mutually inclusive, so you can use multiple at the same time if you want to.
<Warning>
With any of these configurations, you have to have atleast three variables set for the server to function:
[`postgres.connection`](#postgres-connection-⚠), [`crypto.sessionSecret`](#crypto-session-secret-⚠) and [`meta.name`](#meta-name-⚠)
</Warning>
### Method 1 - `config.json`
This method uses nesting, so the key `server.basePath` with the value of `"/backend"` will result in a file that looks like this:
```json
{
"server": {
"basePath": "/backend"
}
}
```
### Method 2 - `.env`
The environment variable names use double underscores as separators and `MWB_` as the prefix. So the key `server.basePath` will result in the .env file like this:
```sh
MWB_SERVER__BASE_PATH=/backend
```
### Method 3 - Environment
This method is identical to the `.env` method listed above, but you add the variables to the environment instead of writing it in a file.
# Reference
## Server
All configurations related to the HTTP server.
### `server.port`
- Type: `number`
- Default: `8080`
Port number that the HTTP server listens on.
### `server.cors`
- Type: `string`
- Default: `""`
- Example: `"https://movie-web.app https://testing.movie-web.app"`
Space separated list of allowed origins.
### `server.allowAnySite`
- Type: `boolean`
- Default: `false`
If set to true, it allows any origin to access the site. This overwrites the [`server.cors`](#server-cors) setting.
### `server.trustProxy`
- Type: `boolean`
- Default: `false`
Controls whether the server should trust reverse proxy headers. This is used to identify users for ratelimiting.
### `server.trustCloudflare`
- Type: `boolean`
- Default: `false`
Controls whether the server should trust Cloudflare IP headers. This is used to identify users for ratelimiting.
### `server.basePath`
- Type: `string`
- Default: `"/"`
Prefix for which path is being listened on. Useful if you're hosting on `example.com/backend` for example.
<Note>
If this is set, you shouldn't apply URL rewriting before proxying.
</Note>
## Logging
All configurations related to how the HTTP server will log. This is not related to the [metrics](./introduction.mdx#metrics) endpoint.
### `logging.format`
- Type: `string` | `"pretty"` | `"json"`
- Default: `"pretty"`
Logging format to use, should be either `pretty` or `json`, most users should probably use the default.
## Postgres
All configurations related to how postgres functions.
### `postgres.connection` ⚠
- Type: `string`
- Example: `"postgresql://localhost:5432"`
Connection URL for postgres instance, should contain the database in the URL.
<Caution>
**Required. The backend will not start if this is not configured.**
</Caution>
### `postgres.migrateOnBoot`
- Type: `boolean`
- Default: `false`
Run all [migrations](./introduction.mdx#migrations) that haven't ran yet on boot.
<Warning>
If you have multiple replicas running, this can cause a lot of issues. We recommend only using this if you run only one replica.
</Warning>
### `postgres.debugLogging`
- Type: `boolean`
- Default: `false`
Log all postgres queries in the console. Useful for debugging issues with the database.
<Warning>
This outputs sensitive, **DO NOT** run it in production.
</Warning>
### `postgres.ssl`
- Type: `boolean`
- Default: `false`
Enable SSL for postgres connections. Useful if you're using a hosted postgres database.
## Cryptography
All configurations related to cryptography.
### `crypto.sessionSecret` ⚠
- Type: `string`
The secret used to sign sessions. **Must be at least 32 characters long.**
<Caution>
**Required. The backend will not start if this is not configured.**
</Caution>
## Meta
These options configure how the server will display itself to the frontend.
### `meta.name` ⚠
- Type: `string`
- Example: `"Unofficial movie-web"`
The name of the backend instance, this will be displayed to users who try to create an account.
<Caution>
**Required. The backend will not start if this is not configured.**
</Caution>
### `meta.description`
- Type: `string`
- Default: `""`
- Example: `"This is not an official instance of movie-web"`
The description of the backend instance, this will be displayed to users who try to create an account.
## Captcha
All configurations related to adding captcha functionality. Captchas' help to protect your server from bot attacks.
### `captcha.enabled`
- Type: `boolean`
- Default: `false`
Enables [Recaptcha](https://www.google.com/recaptcha/about/) support for user registration and login. [You can follow this guide to create a Recaptcha key](https://cloud.google.com/recaptcha-enterprise/docs/create-key-website#create-key).
<Warning>
If this is enabled, all other captcha related settings are required.
</Warning>
### `captcha.secret`
- Type: `string`
- Default: `""`
- Example: `"sjgaJ@3djasFVx"`
[Google Recaptcha](https://www.google.com/recaptcha/about/) secret key.
### `captcha.clientKey`
- Type: `string`
- Default: `""`
- Example: `"2jf853z5bc63bvDb2323FAda"`
[Google Recaptcha](https://www.google.com/recaptcha/about/) site key.
## Ratelimits
All configuration options related to adding ratelimiting functionality. Helps to protect against bot attacks or spammy users.
<Note>
Make sure your IP headers are properly forwarded if you're using a reverse proxy. Also see [`server.trustProxy`](#server-trust-proxy).
</Note>
### `ratelimits.enabled`
- Type: `boolean`
- Default: `false`
Enables ratelimiting some more expensive endpoints.
<Warning>
If this is enabled, all other ratelimit related settings are required.
</Warning>
### `ratelimits.redisUrl`
- Type: `string`
- Default: `""`
- Example: `"redis://localhost:6379"`
Redis connection URL for storing ratelimit data. You can use a plain redis instance for this, no modules are required.