public static NFHttpClient getNFHttpClient(String host, int port){
		MultiKey mk = new MultiKey(host,port);
		NFHttpClient client = clientMap.get(mk);
		if (client == null){
			client = new NFHttpClient(host, port);
			clientMap.put(mk,client);
		}
		return client;			
	}
Factory class to get an instance of NFHttpClient
@author stonse
ribbon-httpclient/src/main/java/com/netflix/http4/NFHttpClientFactory.java