cache files: knowing what they are and interacting with them
in every computer, after a certain amount of time, there will accumulate files called cache. cache is the term given to files created by the cpu with preprocessed information so that the cpu doesn't have to process them later on when the user performs the same task. this is the reason that the computer does everything faster on the second time (it's more evident on less powerful hardware). while this is an integral part of making the computer faster and efficient, clearing the cache once in a while is recommended for many reasons. The most important one being that sometimes, the preprocessed information which the cache file contains is rendered completely useless due to even the smallest updates and they just end up taking up space on the disk of the computer.