面向桌面环境的索引实时更新方法

在桌面计算环境中，文件和目录频繁发生新建、删除、修改、重命名、移动、复制等变化，这对桌面索引更新的实时性和性能提出更高要求，而传统的桌面索引更新方法完全或部分依赖周期性全盘扫描，往往需要大规模索引重建，导致索引生成延迟大、系统资源占用高.针对这些弊端，本文提出了一种基于文件系统事件监听的桌面索引实时更新方法，并实现了相应的桌面索引实时更新系统.实验表明：本文提出的索引更新方法延迟低、系统资源占用低.

Index Real-Time Updating Method for Desktop Environment

In the desktop computing environment, files and directories are frequently changed, such as being created, deleted, modified, renamed, moved, and copied, which has higher demands on the real-time updating of desktop index and its efficiency. However,the traditional desktop index updating methods are fully or partially dependent on periodically full scan, which inevitably requires a large-scale index reconstruction and leads to long delay of index generation and high usage of system resources. In order to overcome these drawbacks, this paper puts forward a new desktop index real-time updating method based on a new file system events monitoring, and implements corresponding desktop index real-time updating system. Experimental results show that the proposed index updating method provides lower latency and lower usage of system resources.