Distributed runtime for Java -- scale horizontally without microservices complexity.

Aether lets you deploy Java services as slices and handles distribution, scaling, and resilience automatically. A slice is a typed Java interface with dependency injection via factory method parameters -- the same service model as Spring @Service, without the infrastructure overhead. Write services, and Aether manages deployment across nodes, automatic scaling based on CPU/latency/request rate, failure recovery, and load balancing. No actors, no message passing, no new paradigm to learn.

@Slice
public interface PlaceOrder {
    Promise<OrderResult> execute(PlaceOrderRequest request);

    static PlaceOrder placeOrder(InventoryService inventory, PricingService pricing) {
        return request ->
            inventory.checkStock(request.items())
                .flatMap(stock -> pricing.calculateTotal(request.items()))
                .flatMap(total -> createOrder(request, stock, total));
    }
}

# Check cluster status
aether status

# Deploy a slice
aether deploy org.example:my-slice:1.0.0

# Scale it
aether scale org.example:my-slice:1.0.0 -n 3

aether-forge
# Open http://localhost:8888

Forge provides a visual dashboard, cluster operations, chaos testing, and per-node management API access.

Requires Java 25.

curl -fsSL https://raw.githubusercontent.com/siy/aether/main/install.sh | sh

git clone https://github.com/siy/aether.git
cd aether && mvn package -DskipTests

aether/
├── slice-api/           # Slice interface
├── slice/               # Slice management
├── node/                # Runtime (AetherNode)
├── cluster/             # Rabia consensus
├── forge/               # Local cluster simulator & dashboard
├── cli/                 # Command-line tools
└── examples/
    └── ecommerce/       # E-commerce demo

• Java 25
• Maven 3.9+
• pragmatica-lite-core
• pragmatica-lite-consensus