| 摘要: |
| 在高性能商用数据库的管理下，以双服务器外挂同一盘 ＨＡ系统模式的结构的ＨＬＲ数据库系统，有良好的数据安全与完备性，但无法满足ＨＬＲ系统的实时性要求。为此引入内存缓存以提高系统处理的实时性，但需解决内外存及主备端内存的数据一致。本文分析了ＨＡ结构下ＨＬＲ数据库系统的结构与数据组织，定义了修改图样，提出了实现数据一致的方法。 |
| 关键词: 移动通信 HLR系统 数据库 HA结构 数据一致性 |
| DOI：10.3969/j.issn.1001-893X. |
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| 基金项目: |
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| The Realization of Data Coherence in HLR Database Syste m Basing HA Structure |
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| Abstract: |
| Under the management of high-powered commercial database system, HLR database system basing HA structure with two servers and single RAID has good da ta-security and data-integrity. While it can't fulfil the demand of real time. I n order to improve the system's performance, EMS memory cache is used. But the d ata coherence between disk and memory and between host and backup must be solved . This article analysed the structure and data orgnization of HLR database syste m basing HA structure, defined a concept of " Modified Draft ", and put forward a way to realize data coherence. |
| Key words: Mobile Cammunication,Database System,HLR, HA System |
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