A buffer is something that has yet to be "written" to disk. A cache is something that has been "read" from the disk and stored for later use.
A buffer is something that has yet to be "written" to disk. A cache is something that has been "read" from the disk and stored for later use.
![linux-svn卸载与安装[图]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)