cache n. 高速缓冲存储器 一种特殊的存储器子系统，其中复制了频繁使用的数据以利于快速访问。存储器的高速缓冲存储器存储了频繁访问的 RAM 位置的内容及这些数据项的存储地址。当处理器引用存储器中的某地址时，高速缓冲存储器便检查是否存有该地址。如果存有该地址，则将数据返回处理器；如果没有保存该地址，则进行常规的存储器访问。因为高速缓冲存储器总是比主RAM 存储器速度快，所以当 RAM 的访问速度低于微处理器的速度时，常使用高速缓冲存储器。-cache n. a special cache memory subsystem, which replicated the frequently used data for fast access. Cache memory stores frequently accessed RAM locations and the contents of the memory address of these data items. When the processor references an address in memory, the cache will check if there is the address. If there is the address, it will return the data processor　If you do not save the address, the routine memory access. Because cache memory is always faster than main RAM memory, so when the RAM access speed than the speed of the microprocessor, often using high-speed buffer memory.