# JsonLinesJournalFormat.FormatKey

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.journaling/orleans.journaling.json.jsonlinesjournalformat/) | [Properties](/orleans/docs/api/csharp/microsoft.orleans.journaling/orleans.journaling.json.jsonlinesjournalformat/properties/)

[Source](https://github.com/dotnet/orleans/blob/8bc9fd244427351ad24ccc039a9e7642a42c1cc4/src/Orleans.Journaling/Formats/Json/JsonLinesJournalFormat.cs#L23)

```csharp
public string FormatKey
```

Gets the key which identifies this journal format in storage metadata and keyed service registration.