The current save file system, is slow, and does not allow save files to be updated. I am considering switching to MapDB, or LevelDB for game save storage.
Revamped with FST, not on the serverside yet. Boosted world saving, and loading speeds massively. But requires a slew of JVM arguments to run.
To fix this issue server-side, a server bootstrap utility should be created which will automatically download the given server jar, and pass it the required JVM arguments.