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.
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About this Mod
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StringDuper
StringDuper is a server-friendly string duplication system designed for stable and predictable farming. It uses structure validation and optimized server-side processing to maintain consistent behavior while reducing unnecessary entity and physics load.
The system is designed for multiplayer servers and supports multiple farms while preventing invalid, overlapping, or excessively dense setups.
Features
- Deterministic server-side farm processing
- Optimized 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
- Reduced entity and physics lag
- Cached farm validation
- Event-assisted hook tracking
- 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
- Farms generate output every 20 ticks (1 second)
Configuration files:
- Mods:
config/StringDuper.json - Plugins:
plugins/StringDuper/StringDuper.json
⚠️ We recommend changing the configuration only when necessary.
Limitations
- A player must remain within 64 blocks for farms to stay active
- Tripwire chains must remain fully attached
- Maximum chain distance is limited
- Invalid or incomplete structures are automatically disabled
- Overlapping or intersecting farms are blocked
- Correct hook, trapdoor, lever, and water placement is required
- Excessive farm stacking is prevented
- Farms only operate while the structure remains valid
Warning
- Overlapping or intersecting farms are intentionally disabled
- Breaking the tripwire structure immediately disables the farm
- Extremely large-scale farms may still affect server performance
- Debug mode is recommended only for testing and troubleshooting
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 fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (26.3).
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
26.3, 26.2, 26.1.2 (+14 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 fabric 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 (26.3). You can switch loaders with one click in the panel.
Is String Duper compatible with fabric and forge and paper and purpur and spigot?
String Duper officially supports fabric, forge, paper, purpur, spigot for Minecraft 26.3, 26.2, 26.1.2. 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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