复制/缓存技术是为移动应用提供数据可用性的有效技术,但是,也存在数据大量冗余以及数据冲突等问题。以数据的语义片段为管理单位,将不同客户需要复制的数据进行合并管理,大大地减少了数据被复制的次数。同时,模拟传统数据库中锁的机制,提出了事务协调器方案,避免和解决数据,中突问题。
Replica/cache are efficient technology to offer data availability for mobile application. But data redundancy and conflict are main disadvantage, Using the semantic segment as the manage granularity, the replicated data is merged from different users, the re- dundancy of data greatly is decreased, The mechanism of lock in tradition database is simulated, guarantee technology is presented to avoid and resolute data conflict efficiently.