# NatsOptions.BatchSize

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.streaming.nats/orleans.streaming.nats.natsoptions/) | [Properties](/orleans/docs/api/csharp/microsoft.orleans.streaming.nats/orleans.streaming.nats.natsoptions/properties/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Streaming.NATS/NatsOptions.cs)

```csharp
public int BatchSize
```

The maximum number of messages to fetch in a single batch. Defaults to 100.