f1540c8210
Spark profile confirmed 'restoreSophisticatedStorageItems' and its single-item
helpers as hot paths on the server main thread. The prior restore did:
for each backpack/shulker/disk in the player's inventory:
SELECT backpack_nbt FROM backpack_data WHERE uuid = ?
deserialize
apply
With a player carrying 3 backpacks + 2 shulkers + 4 RS2 disks this was
9 sequential blocking SELECTs on the main thread — adding ~9 round-trips
of MySQL latency to the restore window.
Adds two helpers:
ModsSupport.prefetchStorageContents(Collection<UUID>)
→ single SELECT with WHERE uuid IN (?,?,?,...) returning a
Map<UUID, CompoundTag>. Shares the parsing path (BNBT: prefix,
legacy Base64, snbt fallback) with restoreStorageContents so
any serialization quirk handled there is handled here.
ModsSupport.collectBackpackUuids(Player, includeEnderChest)
→ UUID-only scan without any DB work, used by the restore path
to build the prefetch list.
No behavior change yet — the helpers are wired in a follow-up commit
that plugs them into doPlayerJoin's apply phase.
|
||
|---|---|---|
| .github | ||
| compat-mods | ||
| gradle/wrapper | ||
| src/main | ||
| .gitattributes | ||
| .gitignore | ||
| build.gradle | ||
| CHANGELOG.md | ||
| docker-compose.yml | ||
| ERROR_LOG.md | ||
| gradle.properties | ||
| gradlew | ||
| gradlew.bat | ||
| LICENSE | ||
| README.md | ||
| settings.gradle | ||
| TEST_PROCEDURE_v2.1.5.html | ||
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