| 摘要: |
| 讨论了一种在分布信息访问环境下提高数据利用率和减少通信流量的分布缓存体系.缓存节点能缓存多个数据源的信息,使多个用户相互重用数据缓存,从而提高缓存的命中率.该缓存体系采用了多种不同的方法来解决数据缓存的一致性问题.最后提出了一种虚缓存节点的概念,用于扩展原来的体系.虚节点可以减少全局缓存访问优化计算的成本. |
| 关键词: 分布信息访问环境 信息 数据缓存 远程缓存节点 |
| DOI： |
| 分类号: |
| 基金项目:广东省自然科学基金资助项目(109-B62750);广东省重点攻关计划资助项目(109-B25940) |
|
| Distributed Data Cache Systems |
|
HUANG Shi neng,XI Jian qing
|
| Abstract: |
| A distributed cache system in distributed information access environment is discussed in this paper, which is used to increase the access efficiency and reduce the communication throughout. The cache node can store the data from multiple data sources. Different access of information can reuse the same cached data and thus improve the hit rates. The cache system adopts various methods to keep the consistency of cached data. Finally, concept of virtual cache node is proposed, which extends the original caching system. The adoption of virtual nodes is for reducing the amount of replicatedcached data and reduce the computation cost for a global optimized accessing plan computation. |
| Key words: distributed information access environment information data cache remote cache node |
