doc iconCache stands for temporary files. These files are used with may softwares so you can run with one of them.

These are the temporary files that used with different softwares:

Especially the web pages and images that are stored by internet explorer take large space on your computer. In this case you should delete them for saving space. You should follow these steps: 

1. Click on "tools" menu on  Internet Explorer.

2. Click on "internet options"

3. Click on "general" option 

4. Then, click "delete file" on "Temporary Internet files" section.

What to use cache

various softwares.

which page related to cache file

cache Related Searches

You can check related links about cache fileextension.