lib/nodeCacheInterface.js
function (key, callback) {
            return client.get(key, function (err, result) {
                return callback(err, result);
            });
        }
function (key, callback) {
            return client.get(key, function (err, result) {
                return callback(err, result);
            });
        }
function ( key , callback ) { return client . get ( key , function ( err , result ) { return callback ( err , result ) ; } ) ; }
node cache can return the value directly rather than using a callback
node cache can return the value directly rather than using a callback