The CPU cache is a memory buffer for temporary storage of information that allows data to be transferred between functional units with different transfer characteristics, because it performs in a similar way as RAM does, which is the main memory of the computer, where programs and data reside, on which read and write operations can be carried out, but the RAM memory is smaller and faster to access and is used more frequently.
The cache is a special high-speed storage system that can be in the reserved areas of the main memory as well as an independent storage device. There are two types of cache which are cache and disk cache.
The cache is a part of the static RAM high speed SRAM is a memory - based semiconductors and is faster than RAM, DRAM dynamic is used as main memory and is effective because the programs are accessed many times the same data or instructions, where it stores the information in SRAM, which is when the computer avoids consenting to DRAM memory, it is a type of RAM memory technology.
The Disk Cache works based on the same principles of the cache, but instead of using SRAM semiconductor - based high - speed, main memory of the most recent of the hard drive data is used, but when the program needs to go to disk data, the first thing they test is the disk cache to see if the data is in the disk cache.
