Make a swap file on linux
A swap is a kind of virtual memory storage where the rarely used pages of memory are stored. Swap storage becomes valuable if low memory or fast opcache PHP. Make swap file linux is required to faster your system.
Swap storage stored as a partition in a dedicated server but in virtual machines or some system, there is only one partition and no swap partition. Linux is making easy swap as a file. So, swap space can be both file or partition. If you have swap partition but require more swap space on a specific case, you can change your swap to file.