private boolean needRegister(String applicationName,
			SidecarInstanceInfo sidecarInstanceInfo) {
		SidecarInstanceInfo cacheRecord = sidecarInstanceCacheMap.get(applicationName);
		if (!Objects.equals(sidecarInstanceInfo, cacheRecord)) {
			// modify the cache info
			sidecarInstanceCacheMap.put(applicationName, sidecarInstanceInfo);
			return true;
		}
		return false;
	}
@author www.itmuch.com
@author yuhuangbin
spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-sidecar/src/main/java/com/alibaba/cloud/sidecar/SidecarHealthChecker.java