Keeping a value when the server/resource is turned off

[HeavyMetal]

i need a nice way to keep a value of a variable "INT i" even if the server/resource has been restarted or stopped, so it can keep counting the number of players that already used a service in game. what is the better way to do that?

[50p]

Save it in a database or a simple text file then load it when you need to use it.