JedisPool继承了Pool<T>类，最原始的Pool类，仅仅对GenericObjectPool进行了一层简单的封装，将borrowObject，returnObject，returnInvalidateObject简单封装了下
JedisPool自己定义了private类JedisFactory，也仅仅是对BasePoolalbeObjectFactory的简单封装，实现了makeObject，destroyObject，validateObject，分别 new一个jedis并且connect了，disconnect一个jedis，
jedis继承了BinaryJedis，BinaryJedis里面放了一个Client,继承自BinaryClient，
apache-commons-pool
switch(whenExhaustedAction) { case WHEN_EXHAUSTED_BLOCK: case WHEN_EXHAUSTED_FAIL: case WHEN_EXHAUSTED_GROW: _whenExhaustedAction = whenExhaustedAction; break; default: throw new IllegalArgumentException("whenExhaustedAction " + whenExhaustedAction + " not recognized."); }
技巧
_pool = new CursorableLinkedList(); startEvictor(_timeBetweenEvictionRunsMillis);
原文：http://www.cnblogs.com/starfuxks/p/3556403.html