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docs(applications): document the Reuse backend connections setting #204

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3 changes: 2 additions & 1 deletion apps/docs/content/docs/core/applications/advanced.mdx
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Expand Up @@ -15,9 +15,10 @@ This section is designed for experienced users who need to manage complex config
- **Purpose**: Manages the scaling and distribution of the application across multiple servers or nodes.
- **Replicas**: Set the number of instances of your **application** that should be running.
- **Registry Selection**: Choose the Docker registry from which your container images will be pulled. This is crucial for ensuring that the correct images are used during deployment.
- **Reuse backend connections**: On by default. Turn it off to disable Traefik backend connection reuse for the application's Swarm service. This avoids reusing a backend connection to a replica removed during a rolling update. A custom transport set through the Traefik editor is kept and continues to control that route's connection behavior.

#### Important Note
Always click 'Redeploy' after modifying the cluster settings to apply the changes.
Always click 'Redeploy' after modifying the cluster settings to apply the changes. **Reuse backend connections** is the exception: it updates the application's routes when you save. If the route update fails, resolve the error and save again to retry; this also works when you save the currently stored value.

### Swarm Settings

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