# JsonJournalHostingExtensions.UseJsonJournalFormat(ISiloBuilder, Action<JsonJournalOptions>)

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

[Source](https://github.com/dotnet/orleans/blob/8bc9fd244427351ad24ccc039a9e7642a42c1cc4/src/Orleans.Journaling/Formats/Json/JsonJournalHostingExtensions.cs#L75-L83)

```csharp
public static ISiloBuilder UseJsonJournalFormat(this ISiloBuilder builder, Action<JsonJournalOptions>? configure = null)
```

Configures this silo with the JSON Lines Orleans.Journaling format family.

### Parameters

- `builder` (`ISiloBuilder`): The silo builder.
- `configure` (`Action<JsonJournalOptions>`): Optional delegate to configure [JsonJournalOptions](/orleans/docs/api/csharp/microsoft.orleans.journaling/orleans.journaling.json.jsonjournaloptions/).

### Returns

The silo builder for chaining.

### Examples

```csharp
builder.AddJournaling().UseJsonJournalFormat();
            
             builder.AddJournaling().UseJsonJournalFormat(MyJournalJsonContext.Default);
            
             builder.AddJournaling().UseJsonJournalFormat(options =>
             {
                 options.SerializerOptions.PropertyNamingPolicy = JsonNamingPolicy.CamelCase;
                 options.AddTypeInfoResolver(MyJournalJsonContext.Default);
             });
```