# HttpKnownHeaderNames.Expires

Kind: Field  
Namespace: `Sisk.Core.Http`  
Assembly: `Sisk.Core.dll`  
Source: https://docs.sisk-framework.org/api/Sisk.Core.Http.HttpKnownHeaderNames.Expires.html

## Expires {#Sisk_Core_Http_HttpKnownHeaderNames_Expires}

The HTTP Expires header.

Indicates the date and time after which the response is considered stale, helping clients manage caching.

```csharp
public const string Expires = "Expires"
```

### Field Value

[string](https://learn.microsoft.com/dotnet/api/system.string)