现有的ForkJoinPool还是ExecutorService？(Existing ForkJoinPool or ExecutorService?)

 LUR是将缓存过期并将新项添加到缓存的算法。 当缓存满时，此算法将在缓存中过期最近使用最少的项目。 MemoryCache是​​.net 4中的一个类，之后是一种在堆内存中实现缓存的方法。 缓存可以根据您可以缓存在硬盘驱动器或内存上的缓存介质以不同的方式进行分类，具体取决于内存的位置，您可以将其分类为内存（在内存中）和内存（a）例如在另一台服务器上的堆内存）。 c＃中的MemoryCaching使用内存，你必须小心，因为它可以使用你的应用程序的所有内存。 所以如果你有多个节点，最好不要使用它。 
 
 另外需要考虑的是，当您将对象缓存在外部存储器中时，该对象应该是可序列化的。 但是内存中缓存可以缓存任何对象而无需序列化。 

LUR is a algorithm of expiring the cache and adding new Item to your cache. the this algorithm expires the least recently used Item in your cache when the cache is full. The MemoryCache is a class in .net 4 and after which is a way of implementing caching inside the heap memory. Caching can be categorise in different ways base on the media that you cache you can cache on hard drive or memory, based on the location of the memory you can categorize it as in-memory (inside the heap memory) and out-memory (a memory out side the heap for example on another server). MemoryCaching in c# uses in-memory and you have to be careful because it can use all the memory of your application. So its better not to use it if you have more than one node. 
 
One another things you have to take into consideration is that you when you cache an object in an out-memory the object should be serializable. But the in-memory caching can cache any object without serializing.