基于JGroups的分布式缓存的设计与实现

摘要

After investigating and analyzing distributed cache products which are popular in the market, it is found that they are not good enough at data redundancy backup. Some even don't support data redundancy backup, others are weak at expandability on the function. To solve the problem,the paper presents a design and implementation of a kind of distributed data cache which can achieve the expandable data redundancy backup function by dynamically choosing cache nodes and reliable data transference. Experiments prove that the implementation is well expandable while promising the data redundancy backup function.%通过对现在流行的分布式缓存产品进行调查分析,发现这些产品在数据冗余备份方面做得不够完善.有些产品甚至不提供数据的冗余备份,有些产品虽然提供了这项功能,但是扩展性不强.针对上述问题,提出了一种分布式数据缓存的设计与实现:通过动态选择缓存节点和可靠的数据迁移来达到可扩展的数据冗余备份功能.实验表明,该实现在具备数据冗余备份功能的基础上有着良好的可扩展性.