ConcurrentLfu time-based expiry

BitFaster.Caching.UnitTests/Lfu/TimerWheelTests.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using BitFaster.Caching.Lfu;
+using BitFaster.Caching.Lru;
+using BitFaster.Caching.Scheduler;
+using FluentAssertions;
+using Xunit;
+
+namespace BitFaster.Caching.UnitTests.Lfu
+{
+ public class TimerWheelTests
+ {
+ [Fact]
+ public void Test()
+ {
+ var wheel = new TimerWheel<int, int, TimeOrderNode<int, int>, ExpireAfterPolicy<int, int>>();
+ var policy = new ExpireAfterPolicy<int, int>(wheel);
+ var cache = new ConcurrentLfuCore<int, int, TimeOrderNode<int, int>, ExpireAfterPolicy<int, int>>(
+ Defaults.ConcurrencyLevel, 3, new ThreadPoolScheduler(), EqualityComparer<int>.Default, () => { }, policy);
+
+ wheel.Should().NotBeNull();
+ }
+ }
+}

BitFaster.Caching/ItemRemovedReason.cs

@@ -30,5 +30,7 @@
  /// The item was removed from the cache by a trim method call.
  /// </summary>
  Trimmed,
+
+ Expired,
  }
 }