A simple project that will help you backup folders of worlds automatically when the server's "world save event" happen.
Some simple setting can be change by editing Conifg.yml:
1. "BackupPath" : A folder where backup created
2. "number of files" : Number of files to maintain
I only used the bukkit api and basic java libraries, so it should work find for every server.
[latest update]
*Some bugs occur in Ubuntu environment (2021/12/20)