Node.js to retrieve data from a cache object

cache-service.js

var cache = require("./cache");

function doRequest(url, httpRes){
	var data = cache.get(url);
	if (data){
		httpRes.json(200, JSON.parse(data));	
	}
	return !!data;
}

exports = module.exports = {

	getClients: function(httpRes){ //web service request
		var url = "clients";
		return doRequest(url, httpRes);
	},

	getSales: function(httpRes){ //web service request
		var url = "sales?client="+req.client;
		return doRequest(url, httpRes);
	}

}