https://github.com/caesay/genericmemorycache
System.Runtime.Caching.Generic
https://github.com/caesay/genericmemorycache
Last synced: 11 months ago
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System.Runtime.Caching.Generic
- Host: GitHub
- URL: https://github.com/caesay/genericmemorycache
- Owner: caesay
- License: other
- Created: 2015-12-23T22:11:19.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2015-12-23T22:47:21.000Z (over 10 years ago)
- Last Synced: 2025-04-13T19:17:48.795Z (about 1 year ago)
- Language: C#
- Size: 43.9 KB
- Stars: 3
- Watchers: 2
- Forks: 9
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE.md
Awesome Lists containing this project
README
About
-----
This fork serves the primary purpose of hosting the following nuget package:
```
PM> Install-Package System.Runtime.Caching.Generic
```
Commits from the original author, along with my own improvements will be merged here.
System.Runtime.Caching.Generic
==============================
* Overview
* Sample use
* Object model
Overview
--------
This is a lightweight, strongly-typed, generic, extensible, and thread-safe, [N-way set-associative](https://en.wikipedia.org/wiki/CPU_cache#Associativity), in-process (memory) cache, coming with 4 built-in eviction / replacement policies ([LRU, MRU, LFU](https://en.wikipedia.org/wiki/Cache_algorithms#Examples), none).
The TestApp console application accompanying the library comes with a few (NUnit) tests wrt. correctness, robustness, and extensibility, along with a basic comparative performance / stress test vs. Microsoft's System.Runtime.Caching introduced in .NET 4.0.
**Please read and accept** the terms of the [LICENSE](https://raw.githubusercontent.com/ysharplanguage/GenericMemoryCache/master/LICENSE.md), or else, do not use this library *as-is*.
Sample use
----------
[Test]
// LFU: Least Frequently Used
public void Test_BasicLFUCacheSemantic()
{
var lfuCache = new MemoryCache();
lfuCache.SetPolicy(typeof(LfuEvictionPolicy<,>));
// Note the default number of ways is 1, and the default capacity is 16...
Assert.AreEqual(lfuCache.Capacity, AbstractCache.DefaultCapacity);
var data =
Enumerable.Range(0, AbstractCache.DefaultCapacity + 1).
Aggregate(new StringBuilder(), (sb, i) => sb.Append(i > 0 ? String.Format(",String {0}", i) : String.Empty)).
ToString().
Split(',');
// Cache all the (16) non-empty strings
for (var i = 1; i < data.Length; i++)
{
lfuCache.Add(i, data[i]);
}
// Use all the (16) non-empty strings four times...
for (var use = 1; use <= 4; use++)
{
for (var i = 1; i < data.Length; i++)
{
// ... except for "String 3", used only twice...
if (i == 3)
{
if (use <= 2)
{
var s = lfuCache.Get(i);
}
}
// ... and for "String 9", used only once
else if (i == 9)
{
if (use <= 1)
{
var s = lfuCache.Get(i);
}
}
else
{
var s = lfuCache.Get(i);
}
}
}
lfuCache.Add(17, "String 17");
Assert.AreEqual(lfuCache.Contains(9), false);
Assert.AreEqual(lfuCache.Contains(17), true);
var used4times = lfuCache.Get(17);
used4times = lfuCache.Get(17);
used4times = lfuCache.Get(17);
used4times = lfuCache.Get(17);
lfuCache.Put(18, "String 18");
Assert.AreEqual(lfuCache.Contains(3), false);
Assert.AreEqual(lfuCache.Contains(17), true);
Assert.AreEqual(lfuCache.Contains(18), true);
}
Object model
------------
![System.Runtime.Caching.Generic][System.Runtime.Caching.Generic.png]
[System.Runtime.Caching.Generic.png]: http://i.imgur.com/Wj7yl0s.png "System.Runtime.Caching.Generic"