SmartEngine is a lightweight business orchestration engine. It's used widely in Alibaba Group. It can be used to orchestrate multiple service in micro service architecture, start/signal a process instance in a very high performance way with low-storage cost , and also can be used in traditional process approval scenario.

0. KISS(Keep It Simple, Stupid)
1. Standardization: embrace BPMN2.0 , specify ubiquitous language.
2. Extensible: such as parser,behavior, storage, user integration etc.
3. High Performance: provide a simple way to improve performance and reduce storage cost in some simple process scenario.
4. Less Dependent: at the very beginning , we try our best to avoid JAR hell .

0. CQRS-style APIs to start,signal,query process instance，task，activity.
1. Support basic BPMN symbols : StartEvent,EndEvent,SequenceFlow,ExclusiveGateway,ServiceTask,ReceiveTask.
2. Provide a simple way to improve performance and reduce storage cost in some simple process scenario.
3. Other：Process Jump; VariablePersister;TaskAssigneeDispatcher;Countersign.

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SmartEngine is released under the Apache 2.0 license.

Inspired by Activiti,MyBatis,Netty etc.