Data Reload

A mod that allows datapack reloading with F3+Y, made for fabric loader.

2.9K Downloads

fabricutility

Rent Server with this Mod

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About this Mod

A mod that displays errors found while reloading server datapacks in chat, made for fabric loader.

Meant to be used while developing datapacks.

When used on the client:

Adds the debug keybind F3+Y, which sends a /reload command to the server.
Displays datapack load errors in chat when playing on singeplayer.

When used on a server:

Displays datapack load errors for every opped player, even if they don't have the mod installed.

Supports:

Function errors
JSON parse errors
Loot table errors
Item modifier errors
Recipe errors
Invalid path errors
Advancement errors
Tag errors

Available Versions

1.7release

MC 1.21, 1.21.1fabric

July 8, 2024

1.6release

MC 1.20, 1.20.1fabric

September 1, 2023

1.5release

MC 1.19.3fabric

January 20, 2023

1.3release

MC 1.18.2fabric

June 7, 2022

1.1release

MC 1.17.1fabric

June 7, 2022

How to Install Data Reload 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 (1.21.1).

Install Mod

Open the mod browser in the dashboard and search for "Data Reload". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.1, 1.21, 1.20.1 (+7 more)

Server-side

~ Optional

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Data Reload 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 (1.21.1). You can switch loaders with one click in the panel.

Is Data Reload compatible with fabric?

Data Reload officially supports fabric for Minecraft 1.21.1, 1.21, 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Data Reload – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Data Reload 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.