private String getClusterHostName() {
		String hostName = config.getClusterProperties().getProperty(PROP_CLUSTER_HOST, NetworkUtils.getLocalHostAddress());
		try {
			//noinspection ResultOfMethodCallIgnored
			InetAddress.getByName(hostName);
		} catch (Exception e) {
			LOGGER.error("The cluster host name {} is not available. Use localhost instead", hostName);
			hostName = "localhost";
		}
		return hostName;
	}
Dynamic cache configuration. it creates local cache or dist cache.

@since 3.1
ngrinder-controller/src/main/java/org/ngrinder/infra/config/DynamicCacheConfig.java