Aurora region engine
Each world region runs on its own tick thread. Paper remains the compatibility input; Aurora owns the execution model and the scheduler inside SourbyCraft.
SourbyCraft
Runtime layerActive development · Signed builds
A Minecraft runtime with its own execution model.
A Paper fork built around Aurora: region-threaded ticking, first-party operator tooling, and a native path for server-side mods.
System mapRuntime
REGION Atick thread
REGION Btick thread
REGION Ctick thread
REGION Dtick thread
AURORAEDF scheduler
Paper upstreamSourbyModssourbyapi/perf · /aurora
Built for the layer it owns.
SourbyCraft treats Paper as an upstream implementation source, not as the architectural ceiling. Aurora can replace execution paths when measurement and correctness justify it, while the Bukkit and Paper surface stays the compatibility contract.
The current target is Minecraft 26.2 on Java 25. SourbyMods are server-side only; Fabric and Forge mods do not load. Compatibility, AWF multi-profile work, and the older-plugin bridge are explicitly gated rather than presented as finished.
Operator instrumentation
One metrics runtime behind /tps, /mspt, and /perf, an /aurora operator hub, HUD bars, and a Spark bridge — built into the server instead of bolted on.
SourbyMods
A native server-mod format for mods/*.jar with early-boot NMS and Bukkit access, a declared API version, and one classloader per mod.
sourbyapi
The Paper API republished under the SourbyCraft namespace, with region-threaded scheduling and a read-only metrics contract for plugins.
Compatibility boundary
Aurora is not a thin patch bundle. The compatibility bridge for older plugins is opt-in and still being qualified; the core runtime is the product.
Release discipline
Signed builds, staged release gates, and a first-boot library bootstrap. A build is not called stable until the release gates say so.
When this is the right layer.
Operators who want a server runtime they can reason about at the region level
Plugin authors who need region-aware scheduling and metrics
Server-side mod authors who need NMS access before worlds load
Specification
- Layer
- Server runtime
- Upstream
- Paper
- Minecraft target
- 26.2
- Runtime
- Java 25
- Native mods
- SourbyMods (ML1)
- Plugin API
- sourbyapi
Tell us what you are running and where it hurts. We will route the brief to the right system.
Start a brief