Dubbo is a distributed service framework enpowers applications with service import/export capability with high performance RPC.
It's composed of three kernel parts:
Remoting: a network communication framework provides sync-over-async and request-response messaging.
Clustering: a remote procedure call abstraction with load-balancing/failover/clustering capabilities.
Registry: a service directory framework for service registration and service event publish/subscription
For more, please refer to:
 http://dubbo.io
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Quick Start
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Export remote service:
 <bean id="barService" class="com.foo.BarServiceImpl" />
	
 <dubbo:service interface="com.foo.BarService" ref="barService" />
Refer remote service:
 <dubbo:reference id="barService" interface="com.foo.BarService" />
	
 <bean id="barAction" class="com.foo.BarAction">
 <property name="barService" ref="barService" />
 </bean>
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Source Building
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0. Install the git and maven command line:
 yum install git
 or: apt-get install git
 cd ~
 wget http://www.apache.org/dist//maven/binaries/apache-maven-2.2.1-bin.tar.gz
 tar zxvf apache-maven-2.2.1-bin.tar.gz
 vi .bash_profile
 - append: export PATH=$PATH:~/apache-maven-2.2.1/bin
 source .bash_profile
1. Checkout the dubbo source code:
 cd ~
 git clone https://github.com/alibaba/dubbo.git dubbo
 git checkout master
 or: git checkout -b dubbo-2.4.0
2. Import the dubbo source code to eclipse project:
 cd ~/dubbo
 mvn eclipse:eclipse
 Eclipse -> Menu -> File -> Import -> Exsiting Projects to Workspace -> Browse -> Finish
 Context Menu -> Run As -> Java Application:
 dubbo-demo-provider/src/test/java/com.alibaba.dubbo.demo.provider.DemoProvider
 dubbo-demo-consumer/src/test/java/com.alibaba.dubbo.demo.consumer.DemoConsumer
 dubbo-monitor-simple/src/test/java/com.alibaba.dubbo.monitor.simple.SimpleMonitor
 dubbo-registry-simple/src/test/java/com.alibaba.dubbo.registry.simple.SimpleRegistry
 Edit Config:
 dubbo-demo-provider/src/test/resources/dubbo.properties
 dubbo-demo-consumer/src/test/resources/dubbo.properties
 dubbo-monitor-simple/src/test/resources/dubbo.properties
 dubbo-registry-simple/src/test/resources/dubbo.properties
3. Build the dubbo binary package:
 cd ~/dubbo
 mvn clean install -Dmaven.test.skip
 cd dubbo/target
 ls
4. Install the demo provider:
 cd ~/dubbo/dubbo-demo-provider/target
 tar zxvf dubbo-demo-provider-2.4.0-assembly.tar.gz
 cd dubbo-demo-provider-2.4.0/bin
 ./start.sh
5. Install the demo consumer:
 cd ~/dubbo/dubbo-demo-consumer/target
 tar zxvf dubbo-demo-consumer-2.4.0-assembly.tar.gz
 cd dubbo-demo-consumer-2.4.0/bin
 ./start.sh
 cd ../logs
 tail -f stdout.log
6. Install the simple monitor:
 cd ~/dubbo/dubbo-simple-monitor/target
 tar zxvf dubbo-simple-monitor-2.4.0-assembly.tar.gz
 cd dubbo-simple-monitor-2.4.0/bin
 ./start.sh
 http://127.0.0.1:8080
7. Install the simple registry:
 cd ~/dubbo/dubbo-simple-registry/target
 tar zxvf dubbo-simple-registry-2.4.0-assembly.tar.gz
 cd dubbo-simple-registry-2.4.0/bin
 ./start.sh
 cd ~/dubbo/dubbo-demo-provider/conf
 vi dubbo.properties
 - edit: dubbo.registry.adddress=dubbo://127.0.0.1:9090
 cd ../bin
 ./restart.sh
 cd ~/dubbo/dubbo-demo-consumer/conf
 vi dubbo.properties
 - edit: dubbo.registry.adddress=dubbo://127.0.0.1:9090
 cd ../bin
 ./restart.sh
 cd ~/dubbo/dubbo-simple-monitor/conf
 vi dubbo.properties
 - edit: dubbo.registry.adddress=dubbo://127.0.0.1:9090
 cd ../bin
 ./restart.sh
8. Install the zookeeper registry:
 cd ~
 wget http://www.apache.org/dist//zookeeper/zookeeper-3.3.3/zookeeper-3.3.3.tar.gz
 tar zxvf zookeeper-3.3.3.tar.gz
 cd zookeeper-3.3.3/conf
 cp zoo_sample.cfg zoo.cfg
 vi zoo.cfg
 - edit: dataDir=/home/xxx/data
 cd ../bin
 ./zkServer.sh start
 cd ~/dubbo/dubbo-demo-provider/conf
 vi dubbo.properties
 - edit: dubbo.registry.adddress=zookeeper://127.0.0.1:2181
 cd ../bin
 ./restart.sh
 cd ~/dubbo/dubbo-demo-consumer/conf
 vi dubbo.properties
 - edit: dubbo.registry.adddress=zookeeper://127.0.0.1:2181
 cd ../bin
 ./restart.sh
 cd ~/dubbo/dubbo-simple-monitor/conf
 vi dubbo.properties
 - edit: dubbo.registry.adddress=zookeeper://127.0.0.1:2181
 cd ../bin
 ./restart.sh
9. Install the redis registry:
 cd ~
 wget http://redis.googlecode.com/files/redis-2.4.8.tar.gz
 tar xzf redis-2.4.8.tar.gz
 cd redis-2.4.8
 make
 nohup ./src/redis-server redis.conf &
 cd ~/dubbo/dubbo-demo-provider/conf
 vi dubbo.properties
 - edit: dubbo.registry.adddress=redis://127.0.0.1:6379
 cd ../bin
 ./restart.sh
 cd ~/dubbo/dubbo-demo-consumer/conf
 vi dubbo.properties
 - edit: dubbo.registry.adddress=redis://127.0.0.1:6379
 cd ../bin
 ./restart.sh
 cd ~/dubbo/dubbo-simple-monitor/conf
 vi dubbo.properties
 - edit: dubbo.registry.adddress=redis://127.0.0.1:6379
 cd ../bin
 ./restart.sh
10. Install the admin console:
 cd ~/dubbo/dubbo-admin
 mvn jetty:run -Ddubbo.registry.address=zookeeper://127.0.0.1:2181
 http://root:root@127.0.0.1:8080