# JournalingHostingExtensions.AddJournalStorage(ISiloBuilder, string, Func<IServiceProvider, TProvider>)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.journaling/orleans.journaling.journalinghostingextensions/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.journaling/orleans.journaling.journalinghostingextensions/methods/)

[Source](https://github.com/dotnet/orleans/blob/8bc9fd244427351ad24ccc039a9e7642a42c1cc4/src/Orleans.Journaling/JournalingHostingExtensions.cs#L146-L217)

```csharp
public static ISiloBuilder AddJournalStorage<TProvider>(this ISiloBuilder builder, string name, Func<IServiceProvider, TProvider> factory)
```

Registers a named journal storage provider and its journaled state manager factory.

### Parameters

- `builder` (`ISiloBuilder`): The silo builder.
- `name` (`string`): The provider name.
- `factory` (`Func<IServiceProvider, TProvider>`): The factory which creates the singleton provider.

### Returns

The silo builder.

### Exceptions

- `System.ArgumentNullException`: The builder or factory is null.
- `System.ArgumentException`: The provider name is empty or whitespace.
- `System.InvalidOperationException`: The name is already registered with another provider type.