
String Duper
StringDuper restores classic tripwire string duping in Minecraft using a controlled tick-based system. Farms only run when the setup, water, and conditions are valid, with safety checks that reduce lag and prevent accidental activation.
Screenshots




About this Mod

StringDuper
StringDuper transforms string farming into a stable, optimized, and multiplayer-friendly mechanic using deterministic server-side processing, strict structure validation, and smart farm management systems.
Instead of relying on unstable vanilla duplication behavior, the mod provides a cleaner and more scalable farming experience focused on predictable behavior, reduced lag, optimized item spawning, and safer long-term multiplayer performance.
StringDuper preserves the gameplay feel of traditional string dupers while improving stability, scalability, and overall server performance.
Features
- Deterministic server-side farm processing
- Optimized stacked item spawning
- Smart overlap-aware farm detection
- Side-by-side farm compatibility
- Strict tripwire structure validation
- Configurable active farm limits
- 64-block player proximity activation system
- Reduced entity and physics lag
- Cached farm validation system
- Event-assisted hook tracking
- Silent production behavior with optional debug mode
- Multiplayer-safe farm management
- Configurable spawn intervals and batch sizes
- Lightweight tick-based processing
Default configuration:
- Maximum active farms across the server: 32
- Maximum active farms per world: 16
- Unlimited per-player farms enabled by default
- Debug mode disabled by default
- Player feedback messages enabled
- Warning messages are rate-limited to reduce spam
- Farms generate output every 20 ticks (1 second)
All default configuration values can be changed inside:
- For Mods:
config/StringDuper.json - For Plugins:
plugins/StringDuper/StringDuper.json
( We advise against making changes to the JSON file unless it is necessary )
Limitations
- Farms require players within a 64-block radius to remain active
- Tripwire chains must remain fully attached
- Maximum chain distance is limited
- Invalid or incomplete structures are automatically suppressed
- Overlapping or intersecting farms are blocked
- Farms require proper hook, trapdoor, lever, and water placement
- Excessively dense farm stacking is prevented
- Farms only operate while the structure remains fully valid
Warning
- Overlapping or intersecting farms are intentionally suppressed
- Breaking tripwire structure integrity immediately disables the farm
- Extremely large-scale farm abuse may still impact server performance
- Debug mode should remain disabled during normal production gameplay
Support
Available Versions
How to Install String Duper on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set bukkit Loader
In the panel under "Egg", select the bukkit loader and matching Minecraft version (26.1.2).
Install Mod
Open the mod browser in the dashboard and search for "String Duper". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
26.1.2, 26.1.1, 26.1 (+12 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
String Duper server crashes on startup – what to do?
Most common cause: wrong bukkit version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.1.2). You can switch loaders with one click in the panel.
Is String Duper compatible with bukkit and fabric and forge and paper and purpur and spigot?
String Duper officially supports bukkit, fabric, forge, paper, purpur, spigot for Minecraft 26.1.2, 26.1.1, 26.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with String Duper – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if String Duper consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Install String Duper with just one click on your server.
