Scalable
by raderth
Scalable is a server-side Fabric mod that caps how much tick work the server does each tick, so a struggling server keeps responding.
What it does
When a server tick starts, Scalable starts a timer and sets a time budget. Chunk ticking and entity ticking proceed as usual while the budget lasts. When the time budget is exhausted partway through a tick, leftover work is pushed to the following tick rather than stretching the current one beyond its limit. Under normal load everything ticks on schedule, and vanilla mechanics stay intact, so most players will not notice the mod.
Under heavy load the mod orders the work. Chunks are sorted, and those with priority such as loaded portals and ender pearls go first. Players always tick first, and other entities are assigned to the nearest player and ticked round-robin. Distant chunks and entities are the ones delayed, leaving the things closest to players responsive. Scalable needs Fabric API and runs only on the server, so players join without installing it.
Scalable is published for Fabric only, for four game versions: 1.21.11, 26.1, 26.1.1 and 26.1.2. The latest file is 2.0.2 for 26.1.2, a beta release from 2026-05-28. The code is open source under the MIT License.
Key features
Time-limited ticking
The mod sets a per-tick time limit and stops processing once it is reached, saving unfinished work for the next tick.
Priority chunk queue
Chunks with loaded portals or ender pearls are processed first, and previously deferred chunks get priority over new ones.
Players ticked first
Players are always ticked before other entities, so the world around them updates even on a heavily loaded server.
Nearest-player assignment
Other entities are assigned to the nearest player and ticked round-robin, so distant entities wait while nearby ones stay active.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
How it compares
NovaStack Performance+ is a client-side only Fabric mod for 1.21.10 and is not open source, so it works on the player's side rather than the server. SBETO is a Fabric mod for 1.21.8 that is not open source and needs the server while the client is optional. Does It Tick? is a server-side Fabric, Forge and NeoForge mod for 1.20 – 1.21.1, open source under the GNU Lesser General Public License v3.0 only, which makes it the broader option for older versions.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Scalable | Fabric | 1.21.11 – 26.1.2 | Server-side only | 2026-05-28 |
| NovaStack Performance+ | Fabric | 1.21.10 | Client-side only | 2026-06-04 |
| SBETO (Smart Block-Entity Tick Optimizer) | Fabric | 1.21.8 | Server required, client optional | 2025-08-10 |
| Does It Tick? | Fabric, Forge and NeoForge | 1.20 – 1.21.1 | Server-side only | 2025-03-27 |
Questions
Does Scalable need Fabric API?
Do players need to install Scalable?
Which game versions does Scalable support?
In the catalog
Scalable is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 15,189 mods support Minecraft 26.1.2.
More from raderth
Similar mods
What the author says
A lightweight server-side optimization mod for Fabric that keeps your server running smoothly under load by intelligently budgeting work. Scalable naturally "scales" the server performance. It works great for large servers or a low budget.
Official listing
- Modrinth page
- modrinth.com/mod/scalable
- Owner
- raderth
- Published
- 2025-12-10
- Updated on Modrinth
- 2026-05-28
- Facts verified
- 2026-10-15