# IJournalFormat.FormatKey

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

```csharp
public abstract string FormatKey
```

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