sentinel-demo com.alibaba.csp 1.8.0-SNAPSHOT 4.0.0 sentinel-demo-etcd-datasource com.alibaba.csp sentinel-core com.alibaba.csp sentinel-datasource-etcd com.alibaba fastjson org.apache.maven.plugins maven-compiler-plugin ${maven.compiler.version} 1.8 1.8 ${java.encoding}