public void TestAgingRemovesEntriesButPreservesReservedEntries()
{
var cache = new LRUCache <UUID, String>(10, minSize: 1, maxAge: 1000);
UUID firstEntryId = UUID.Random();
String firstEntryData = "First Entry";
cache.Add(firstEntryId, firstEntryData);
UUID secondEntryId = UUID.Random();
String secondEntryData = "Second Entry";
cache.Add(secondEntryId, secondEntryData);
Thread.Sleep(5 * 1000);
cache.Maintain();
Assert.AreEqual(1, cache.Count);
Assert.AreEqual(1, cache.Size);
String lastInsertedValue;
Assert.IsFalse(cache.TryGetValue(firstEntryId, out lastInsertedValue));
Assert.IsNull(lastInsertedValue);
Assert.IsTrue(cache.TryGetValue(secondEntryId, out lastInsertedValue));
Assert.AreEqual(secondEntryData, lastInsertedValue);
}
public void TestAgingRemovesEntriesUsingBytesForReservedSize()
{
UUID firstEntryId = UUID.Random();
String firstEntryData = "First Entry";
UUID secondEntryId = UUID.Random();
String secondEntryData = "Second Entry";
var cache = new LRUCache <UUID, String>(capacity: 250, useSizing: true, minSize: secondEntryData.Length, maxAge: 1000);
cache.Add(firstEntryId, firstEntryData, firstEntryData.Length);
cache.Add(secondEntryId, secondEntryData, secondEntryData.Length);
Thread.Sleep(5 * 1000);
cache.Maintain();
Assert.AreEqual(1, cache.Count);
Assert.AreEqual(secondEntryData.Length, cache.Size);
String lastInsertedValue;
Assert.IsFalse(cache.TryGetValue(firstEntryId, out lastInsertedValue));
Assert.IsNull(lastInsertedValue);
Assert.IsTrue(cache.TryGetValue(secondEntryId, out lastInsertedValue));
Assert.AreEqual(secondEntryData, lastInsertedValue);
}
public void TestAgingRemovesEntriesPastExpirationInterval()
{
var cache = new LRUCache <UUID, string>(10, maxAge: 1000);
UUID firstEntryId = UUID.Random();
string firstEntryData = "First Entry";
cache.Add(firstEntryId, firstEntryData);
Thread.Sleep(2 * 1000);
cache.Maintain();
Assert.AreEqual(0, cache.Count, "Count property was wrong");
Assert.AreEqual(0, cache.Size, "Size property was wrong");
Assert.IsFalse(cache.TryGetValue(firstEntryId, out string lastInsertedValue));
Assert.IsNull(lastInsertedValue);
}
/// <summary>
/// Should be called periodically to run cleanup tasks on data
/// that has aged out
/// </summary>
public void Maintain()
{
_assetCache.Maintain();
_bufferPool.Maintain();
}
public void TestAgingRemovesEntriesUsingBytesForReservedSize()
{
UUID firstEntryId = UUID.Random();
String firstEntryData = "First Entry";
UUID secondEntryId = UUID.Random();
String secondEntryData = "Second Entry";
var cache = new LRUCache<UUID, String>(capacity: 250, useSizing: true, minSize: secondEntryData.Length, maxAge: 1000);
cache.Add(firstEntryId, firstEntryData, firstEntryData.Length);
cache.Add(secondEntryId, secondEntryData, secondEntryData.Length);
Thread.Sleep(5 * 1000);
cache.Maintain();
Assert.AreEqual(1, cache.Count);
Assert.AreEqual(secondEntryData.Length, cache.Size);
String lastInsertedValue;
Assert.IsFalse(cache.TryGetValue(firstEntryId, out lastInsertedValue));
Assert.IsNull(lastInsertedValue);
Assert.IsTrue(cache.TryGetValue(secondEntryId, out lastInsertedValue));
Assert.AreEqual(secondEntryData, lastInsertedValue);
}
public void TestAgingRemovesEntriesButPreservesReservedEntries()
{
var cache = new LRUCache<UUID, String>(10, minSize : 1, maxAge : 1000);
UUID firstEntryId = UUID.Random();
String firstEntryData = "First Entry";
cache.Add(firstEntryId, firstEntryData);
UUID secondEntryId = UUID.Random();
String secondEntryData = "Second Entry";
cache.Add(secondEntryId, secondEntryData);
Thread.Sleep(5 * 1000);
cache.Maintain();
Assert.AreEqual(1, cache.Count);
Assert.AreEqual(1, cache.Size);
String lastInsertedValue;
Assert.IsFalse(cache.TryGetValue(firstEntryId, out lastInsertedValue));
Assert.IsNull(lastInsertedValue);
Assert.IsTrue(cache.TryGetValue(secondEntryId, out lastInsertedValue));
Assert.AreEqual(secondEntryData, lastInsertedValue);
}
public void TestAgingRemovesEntriesPastExpirationInterval()
{
var cache = new LRUCache<UUID, String>(10, maxAge : 1000);
UUID firstEntryId = UUID.Random();
String firstEntryData = "First Entry";
cache.Add(firstEntryId, firstEntryData);
Thread.Sleep(2 * 1000);
cache.Maintain();
Assert.AreEqual(0, cache.Count);
Assert.AreEqual(0, cache.Size);
String lastInsertedValue;
Assert.IsFalse(cache.TryGetValue(firstEntryId, out lastInsertedValue));
Assert.IsNull(lastInsertedValue);
}