sentinel-demo com.alibaba.csp 1.4.2-SNAPSHOT 4.0.0 sentinel-demo-command-handler com.alibaba.csp sentinel-cluster-client-default 1.4.2-SNAPSHOT com.alibaba.csp sentinel-cluster-server-default 1.4.2-SNAPSHOT com.alibaba.csp sentinel-transport-simple-http org.springframework.boot spring-boot-starter-web 1.5.17.RELEASE