<PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="10.0.11" />

Microsoft.Extensions.Caching.Memory.PostEvictionCallbackRegistration

public class PostEvictionCallbackRegistration
Represents a callback delegate that will be fired after an entry is evicted from the cache.
public PostEvictionDelegate EvictionCallback { get; set; }

Gets or sets the callback delegate that will be fired after an entry is evicted from the cache.

public object State { get; set; }

Gets or sets the state to pass to the callback delegate.

public PostEvictionCallbackRegistration()