function getFromMysql(data, _next) {
if (data === false) {
args.push(function cachingCallback(err, rows, fields) {
if (err) return _next(err);
memcache.set(cacheKey, rows, cacheTime, function (err) {
});
return _next.apply(null, arguments);
});
query.apply(null, args);
} else {
return _next.apply(null, [null, data, []]);
}
}
module.exports = function (/* arguments */) {
var args = [].slice.call(arguments),
cacheTimeKey = args.length - 2, cacheTime, cacheKey, next;
if (typeof args[cacheTimeKey] === 'number') {
cacheTime = args.splice(cacheTimeKey, 1).shift();
cacheKey = crypto.createHash('md5')
.update(args.slice(0, args.length - 1).toString())
.digest('hex');
next = args.splice(args.length - 1, 1).shift();
}
if (cacheTime && cacheKey) {
async.waterfall([
function getFromMemcache(_next) {
memcache.get(cacheKey, _next);
},
function getFromMysql(data, _next) {
if (data === false) {
args.push(function cachingCallback(err, rows, fields) {
if (err) return _next(err);
memcache.set(cacheKey, rows, cacheTime, function (err) {
});
return _next.apply(null, arguments);
});
query.apply(null, args);
} else {
return _next.apply(null, [null, data, []]);
}
}
], next);
args.push()
} else {
query.apply(null, arguments);
}
}