The CometD project is a scalable HTTP-based event routing bus that uses the AJAX push technology pattern known as "Comet"
'org.cometd:cometd-demo:2.2.0'
<dependency> <groupId>org.cometd</groupId> <artifactId>cometd-demo</artifactId> <version>2.2.0</version> </dependency>
<dependency org="org.cometd" name="cometd-demo" rev="2.2.0"/>
"org.cometd", "cometd-demo", "2.2.0"