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AlertServerWakeUp

A lightweight, server-side Fabric mod for Minecraft 1.21.11 that monitors the server's sleep state and alerts you when it wakes up.

Fabric
Loaders
Fabric
Downloads on Modrinth
67
Followers on Modrinth
0
version
1
Updated
April 12, 2026Apr 12
Published
in 2026
As you can see, as soon a player logs back on, a message is displayed · swipe

At a glance

Runs on Fabric
For Minecraft 1.21.11
Server only — players don't need to install it
Latest version — 1.0.0 from April 12, 2026
License GPL-3.0-or-later — free
Where it's needed
In gamenot neededOn serverrequired

Install on the server only; players don't need it

Game versions1.21.11

Alert Server Wake Up

A lightweight, server-side Fabric mod for Minecraft 1.21.11 that monitors the server's deep sleep state and alerts you when it wakes up.

Minecraft servers have a built-in feature (since Java_Edition_24w33a aka 1.21.2) to pause their tick loop when empty (pause-when-empty-seconds in server.properties) to save CPU resources. However, vanilla Minecraft only logs when the server goes to sleep, not when it wakes up. This mod fixes that.

✨ Features

  • Wake Up Notification: Automatically sends a message to the server console the exact moment a player joins and unpauses the server from a deep sleep state.
  • Status Command: Includes a console-only command to check the exact time remaining before the server enters deep pause.

🚀 Commands

  • /timeuntilpause

    • Usage: Console only (hidden from players).
    • Description: Returns the exact number of seconds left before the server suspends its tick loop, or notifies if the server is currently in a deep pause.

🛠️ Installation

Server-side only. You do not need to install this mod on the client. Just drop the .jar file into your server's mods folder.

Requirements:

  • Minecraft 1.21.11
  • Fabric Loader >=0.16.0
  • Fabric API

FAQ

How to install AlertServerWakeUp?

Install Fabric for your Minecraft version, download AlertServerWakeUp for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does AlertServerWakeUp support?

AlertServerWakeUp has builds for Minecraft 1.21.11.

Is AlertServerWakeUp needed on the server?

Server only — players don't need to install it

License and source
GNU General Public License v3.0 or laterfree to use and share; changes to the mod itself must be published under the same license
Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders

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