He job of cache coherency is done partially by the hardware and partially by the operating system 保证高速缓存一致性的工作由硬件和操作系统共同分担。
In the absence of cache coherency , two different processors may see two different values for the same location in memory 在缓存缺乏一致性的情况下,两个不同的处理器可以看到在内存中同一位置处有两种不同的值。
For clients with weak enforcement of deviation , a cache coherency policy based on period _ of _ validity is presented . query cache hit is decided by c 查询在客户语义缓存中的命中判断包括对缓存项与查询描述之间匹配与可导出的判断。
At the machine level , volatile and synchronization often end up getting translated into the same cache coherency primitives , so there effectively is 在机器级,易变的和同步的内容通常在最后会被翻译成相同的缓存一致原语,所以这里会有
In this way , associative database access is supported , and system performance and data availability during disconnection improve . based on this caching scheme , the thesis investigates thoroughly key issues on cache replacement strategy , cache coherency policy , and query processing algorithms 基于该缓存机制,本文就缓存替换策略、缓存一致性维护策略和基于缓存的查询处理这几个关键技术对移动客户缓存进行了深入的研究。