# ChronologicalEvictionStrategy.PerformPurge(DateTime)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.providers.streams.common.chronologicalevictionstrategy/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.providers.streams.common.chronologicalevictionstrategy/methods/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Streaming/Common/PooledCache/ChronologicalEvictionStrategy.cs#L73-L75)

```csharp
public void PerformPurge(DateTime nowUtc)
```

Method which should be called when pulling agent try to do a purge on the cache

### Parameters

- `nowUtc` (`DateTime`): The current time (UTC)