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.
⬇ Download on Modrinth
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
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.11
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as alert-server-wake-up-v1.0.0-1.21.11.jar — drop this file into the mods folder
- Download size: 7 KB
- Download link checked 24 Aug 2026 — working
These come from our own check of the pack file, not from the source page.