<PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="11.0.0-preview.2.26159.112" />

Microsoft.Extensions.Caching.Memory.PostEvictionDelegate

public sealed delegate PostEvictionDelegate : MulticastDelegate
Represents the callback method that gets called when a cache entry expires.
namespace Microsoft.Extensions.Caching.Memory { public delegate void PostEvictionDelegate (object key, object value, EvictionReason reason, object state); }