DDoSDefender

FastPass: removed synchronous save-on-verify from the login hot path — FastPass.save() used to run on every successful login verification, rewriting and re-encrypting the whole data file each time. As the verified-player list grew, this got slower and slower, blocking a thread with disk I/O on every new join. Verified names are now cached in memory and only flushed to disk periodically (same pattern as AccountGuard.cleanup() / MojangAPI.cleanup()) and on shutdown. Logins are no longer blocked by file I/O, and this fixes a major performance bug.

Added: bStats