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  "readme": "Memoize functions results using an lru-cache.\n\n## Installation\n\n```\nnpm i lru-memoizer --save\n```\n\n## Intro\n\nThis module uses an [lru-cache](https://github.com/isaacs/node-lru-cache) internally to cache the results of an async function.\n\nThe `load` function can have N parameters and the last one must be a callback. The callback should be an errback (first parameter is `err`).\n\nThe `hash` function purpose is generate a custom hash for storing results. It has all the arguments applied to it minus the callback, and must return an string synchronous.\n\nThe `freeze` option (defaults to **false**) allows you to deep-freeze the result of the async function.\n\nThe `clone` option (defaults to **false**) allows you to deep-clone the result every time is returned from the cache.\n\n## Usage\n\n```javascript\n\nvar memoizer = require('lru-memoizer');\n\nvar memoizedGet = memoizer({\n  //defines how to load the resource when\n  //it is not in the cache.\n  load: function (options, callback) {\n    request.get(options, callback);\n  },\n\n  //defines how to create a cache key from the params.\n  hash: function (options) {\n    return options.url + qs.stringify(options.qs);\n  },\n\n  //all other params for the LRU cache.\n  max: 100,\n  maxAge: 1000 * 60\n});\n\nmemoizedGet({\n  url: 'https://google.com',\n  qs: { foo: 123 }\n}, function (err, result, body) {\n //console.log(body);\n})\n\n```\n\n## Sync lru-memoizer\n\nUse `memoizer.sync` to cache things that are slow to calculate or methods returning promises.\n\n```\nvar memoizer = require('lru-memoizer');\nvar memoizedGet = memoizer.sync({\n  //defines how to load the resource when\n  //it is not in the cache.\n  load: function (params) {\n    //return something_hard_to_compute;s\n  },\n\n  //defines how to create a cache key from the params.\n  hash: function (params) {\n    return params.foo;\n  },\n\n  //all other params for the LRU cache.\n  max: 100,\n  maxAge: 1000 * 60\n});\n```\n\n## Similar modules\n\nThis module is very similar to [async-cache](https://github.com/isaacs/async-cache), the main difference is the `hash` function.\n\n## License\n\nMIT 2016 - José F. Romaniello\n",
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