Cache memory is random access memory (RAM) that a computer or microprocessor can access more quickly than it can access regular RAM. As the microprocessor processes data, it looks first in the cache memory and if it finds the data there (from a previous reading of
data), it does not have to do the more time-consuming reading of data
from larger memory.
Two types of caching are commonly used in personal computers: MEMORY caching and DISK caching.
A memory cache: Sometimes called a cache store or RAM cache, is a portion of memory made of high-speed static RAM (SRAM) instead of the slower and cheaper dynamic RAM (DRAM) used for main memory. Cache memory dramatically raises the performance of a computer system at relatively little cost
A disk cache :is a portion of a system memory used to cache reads and writes to the hard disk. It may be referred to as the most important type of cache on the PC, because of the greatest differential speed between the layers, that is the system RAM and the hard disk. Disk caching works under the same principle as memory caching, but instead of using high-speed SRAM, a disk cache uses conventional main memory.
data), it does not have to do the more time-consuming reading of data
from larger memory.
Two types of caching are commonly used in personal computers: MEMORY caching and DISK caching.
A memory cache: Sometimes called a cache store or RAM cache, is a portion of memory made of high-speed static RAM (SRAM) instead of the slower and cheaper dynamic RAM (DRAM) used for main memory. Cache memory dramatically raises the performance of a computer system at relatively little cost
A disk cache :is a portion of a system memory used to cache reads and writes to the hard disk. It may be referred to as the most important type of cache on the PC, because of the greatest differential speed between the layers, that is the system RAM and the hard disk. Disk caching works under the same principle as memory caching, but instead of using high-speed SRAM, a disk cache uses conventional main memory.
