b4d863efa2
CRITICAL PERF - Staggered auto-save: - Old: all 35 players snapshotted in ONE tick → 770-3605ms MSPT spike (15-36 second TPS drop every 5 minutes) - New: queue filled every 5min, drained 1 player/tick → max 22-103ms/tick - autoSaveQueue processes one player per server tick, imperceptible impact CRITICAL PERF - Pool scaling for 35+ players: - Thread pool: 2-8 → 4-16 threads, queue 256 → 512 Prevents CallerRunsPolicy from executing DB tasks on main thread - HikariCP: 10 → 25 max connections, 2 → 4 min idle Prevents connection starvation during concurrent saves HIGH PERF - Cached kick check (eliminates main thread DB queries): - doPlayerConnect (network thread) caches online/lastServer/serverAlive - onPlayerLoggedInKickCheck (MAIN thread) reuses cached result - Fast path: 1 DB query on main thread instead of 2-4 - Fallback: full DB check if cache miss (race condition safety) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> |
||
|---|---|---|
| .github | ||
| gradle/wrapper | ||
| src/main | ||
| .gitattributes | ||
| .gitignore | ||
| build.gradle | ||
| docker-compose.yml | ||
| gradle.properties | ||
| gradlew | ||
| gradlew.bat | ||
| LICENSE | ||
| README.md | ||
| settings.gradle | ||
PlayerSync
PlayerSync is a Minecraft Forge mod that synchronizes player data across multiple servers using a MySQL backend. It allows players to maintain their inventory, equipment, experience, advancements, and more when moving between servers in a network.
Mod Support
Any other mods support is also possible.
Development Setup
Database Setup (Docker)
A docker-compose.yml file is provided for easily setting up a MariaDB database instance for development testing.
- Make sure Docker is installed.
- Inside your work directory run:
This will download the MariaDB image (if not already present) and start a database container in the background.docker compose up -d - Stoppinng the Database
docker compose down
Data Persistence: The database uses a Docker volume, ensuring your data persists even if you stop and restart the containers.
Database Management Tool
The docker-compose.yml also includes an Adminer service, a lightweight database management tool.
- Access Adminer in your web browser at http://localhost:8080.
- Log in using the server with
- username:
playersync - database:
playersync - password: see docker-compose.yml
- username:
For debugging purposes, you can enable use_legacy_serialization to have readable database fields. This can cause crashes and unintended side-effects. Do not enable this on a production server if not absolutely necessary!
Running the Mod
The project uses Gradle for building and running. Use the provided Gradle wrapper (gradlew for Linux/macOS, gradlew.bat for Windows).
- Make sure that the MySQL database you configured is running.
- Run the Server
or on Windows:./gradlew runServer
This task compiles the mod and starts a dedicated Minecraft server instance with the mod loaded in the.\gradlew.bat runServerrundirectory. - Run the Client
or on Windows:./gradlew runClient.\gradlew.bat runClient