Hi, I am new here and in bukkit development, I am working on a plugin which when players die, write in the same file /plugins/namePlugin/fallenPlayers.yml And moreover, when a player joins this same file is read. Since we expect a lot of players to die and to join/connect at the same time, my question is: have I to deal with synchronization or lock of the file ? are events called synchronized in minecraft servers ? Does using the FileConfiguration api give any syncronized/safe approach or I can use File and GSON for example, with the same result (I mean in concurrency context because I would prefer json instead of yml) ? Thank you in advance, this is my first plugin. I will release it when it is finished.