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mmemoize

node-mmemoize

Memoize asynchronous function calls using memcached

Installation

$ npm install mmemoize

Usage

var mmemoize = require('mmemoize');

var mmemoizer = mmemoize('localhost:11211' /*, ..., config */);

// or:
// var Memcached = require('memcached'),
//     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);

Configuration

Send config object as the last 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

Deployment dependencies

• memcached (of course)

Tests

• using mocha
• with running memcached instance (of course)
• $ mocha

License

MIT (see LICENSE)