Meaning of Cache Memory
What is Cache Memory:
The cache or cache is an auxiliary memory, of great speed and efficiency, in which copies of the files and data that the user accesses most frequently are stored, either through the computer or a mobile device.
Its name derives from the French cache, which means "hidden, hidden".
The main function of the cache is the ability to operate faster and more efficiently, whenever it is necessary to make use of the data that is stored in it.
That is, every time the user needs to access a data that is constantly used, it is stored in the cache, thus, when it is necessary to make use of it, again, it will already be stored in the cache and the process of search will be much faster.
Likewise, if said data undergoes any modification, they are stored by the cache both on a computer and on any other mobile device that has a cache memory.
Thanks to this function, certain data or files can be arranged in a more organized, streamlined and simple way, without the need for the device to have to do a greater search in its main memory, generating greater consumption of time, Internet data, among others.
The order of importance of the data or files in a cache will depend on which are the most required. However, data and files that are used less are cleared from the cache rather than from main memory.
For this reason, the cache can be considered as a tool that allows a better performance and result of the capacities that the main memory has.
For this reason, it is located, in computers, between the RAM memory and the Central Processing Unit (CPU) in order to speed up and optimize the arrangement of files and data.
If the cache of the computer or device is eliminated or cleared, the functionality of these electronic equipment would be impaired and even certain storage capacities may be lost.
For example, deleting the cache of a mobile device, such as a cell phone, can cause various difficulties such as losing speed and time capacity when searching for files and even eliminating access to certain applications.
Consequently, clearing the cache of devices and computers is not recommended. Otherwise, it is better to seek advice and the most recommended is to have an automatic deletion system in which the most used information is evaluated.
There are different types of cache, which have the same purpose but vary according to their technological development.
Level 1 cache (L1): the level 1 cache or internal memory, is integrated into the computer's processor and works at the same speed. This cache is divided into two parts, one is in charge of storing the instructions and the other of the data.
Level 2 (L2) cache - Stores data and files. Its response speed is a little lower than the level 1 cache. It is not divided and its use is more directed towards computer programs.
Level 3 cache (L3): speeds up access to data and instructions that were not located on L1 and L2. Its response speed is lower than L2 and currently it is rarely used, but its response capacity is higher than that of main memory.