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docs: Mention CORS_ALLOW_ORIGIN in Redis documentation #802

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docs: Mention CORS_ALLOW_ORIGIN in Redis documentation #802

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14 changes: 14 additions & 0 deletions docs/tutorials/integrations/redis.md
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Expand Up @@ -142,6 +142,20 @@ WEBSOCKET_MANAGER="redis"
WEBSOCKET_REDIS_URL="redis://redis-valkey:6379/1"
```

:::tip

For WebSocket connections to work correctly, especially when your Open WebUI instance is accessed from a different domain, you must also configure the `CORS_ALLOW_ORIGIN` environment variable. This variable tells the server which origins are permitted to access its resources.

For example, if you access Open WebUI from `https://my-open-webui.com`, you should set:

```bash
CORS_ALLOW_ORIGIN="https://my-open-webui.com"
```

Forgetting to set this variable is a common cause of WebSocket connection issues. You can also provide a semicolon-separated list of origins.

:::

:::info

**Redis Database Numbers**
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