Echo testing is used for check the service is available,Echo testing is performed according to the normal request flow and is able to test whether the entire call is unobstructed and can be used for monitoring.
All the services will be automatically implemented
EchoService interface,just cast any service reference to
EchoService to use it.
<dubbo:reference id="memberService" interface="com.xxx.MemberService" />
The java code：
// reference the remote service MemberService memberService = ctx.getBean("memberService"); // case the service reference to EchoService EchoService echoService = (EchoService) memberService; // Echo test usability String status = echoService.$echo("OK"); assert(status.equals("OK"));