We are writing a test framework and we want to maintain a data structure for storing objects at suite level, objects vary from int to slf4j Logger. I am not clear as which data structure to use, which is more effective.
JCS or java.util.Map, which is efficient in terms of time?
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A
HashMapis simpler and faster, is not thread safe. (that is why it is fastest)Other Caching systems are more sophisticated which means there will be a small overhead. Also will be thread safe.
JCSsupportLRU and MRU, TheLRU Memory Cacheis anextremely fast,highly configurable memory cache. It uses a Least Recently Used algorithm to manage the number of items that can be stored in memory. TheLRU Memory Cacheuses its ownLRU Mapimplementation that is significantly faster than both the commonsLRUMap implementationand theLinkedHashMapthat is provided withJDK1.4up.a good read here