mmemoize

Memoize asynchronous functions using memcached

node-mmemoize

Memoize asynchronous function calls using memcached

var Memcached = require('memcached'),
    mmemoize = require('mmemoize');

var memcached = new Memcached('localhost:11211'),
    mmemoizer = mmemoize(memcached /*, config */);

var a = function (/* someArguments, */ callback) {
   // some potentially expensive computations, database fetches etc.
   // ...
   return callback(potentialErrors, theResult);
}

a = mmemoizer.memoize(a, 'a' /*, customTTL */);
a(/* someArguments, */ function (err, result) {
   // process results
   // ...
});

// just in case:
a = a.dememoize(); // or: a = mmemoizer.dememoize(a);

Send config object as the second parameter of mmemoize(), use the following options:

  • ttl: Default key TTL in seconds; default: 120
  • hashAlgorithm: Algorithm used for hashing function arguments in memcached keys, set to null for no hashing at all, for possible values see node.js' crypto documentation; default: sha1
  • using nodeunit
  • with running memcached instance (of course)
  • $ nodeunit tests/tests.js