SaltyMC

Built SaltyBot, the network’s Discord bot.

Tickets, account linking and announcements, on JDA 6 over PostgreSQL. Every decision that could race (the next ticket number, redeeming a link code, two staff clicking approve at once) is a single conditional statement whose affected-row count picks the winner, so there’s no check-then-act window. Ticket transcripts render from the database rather than being scraped back out of Discord.

Bridged it to every game server over Redis Streams.

A transactional outbox, gap-free sequence numbers and a SET NX claim per message give exactly-once delivery through crashes and reconnects. A server that comes back replays what it missed from the outbox, or takes a fresh snapshot if it fell too far behind.

Wrote the in-game side as one Paper/Folia plugin.

/ticket renders the same form as a Paper Dialog for Java players, a Cumulus form for Bedrock, or chat as a fallback. /link syncs Discord roles to LuckPerms as explicit add and remove sets, so ranks granted by hand are never wiped, and announcements arrive as holograms, boss bars, titles or chat.

Built SaltyOrders, an escrowed buy and sell order board.

Buy orders escrow money, sell orders escrow items, and new orders match against resting ones by price-time priority. Two dupe audits closed holes like selling while disconnecting, and a crash-rollback journal covers the minutes between a trade committing and the player’s file saving. Read the full breakdown →

Load-tested it to 5,000 simulated players.

Profiled every round with Windchill and JFR. Read caches took board reads from about 10 ms to about 1 µs, menus render on their own pool, and at 2,000 players Postgres holds 1,467 operations a second with a 7.4 ms median order create.