ds-cache

Provide a tool that is simple data storage as cache and easy to use.

The feature includes:

• File size as Cache size.
• Implement the LRU algorithm.

Documents

Generate the document.

$ codo lib/cache.coffee

Or you can go to CoffeeDoc.info watch this doc.

Installation

$ npm i ds-cache

API

• Cache(option) - Constructor.

  • option.limit_bytes: limit the cache file size. Default: '100K'
  • option.auto_save: enable auto save cache. Default: false
  • option.filename: full name of save file. Default: 'ds_cache.json'

• set(key, value) - Put data into cache.

  • key: the key of data.
  • val: the value of data.

• get(key) - Catch data via key.

  • key: the key that you want to catch the data.

• clear([key]) - Remove the data via key. Clear all data in the cache if you invoke this method without any arguments

  • key: optional. You could remove the data by key, either remove all data without any arguments.

• save() - Write the cache into the file.

• load() - Load the cache from file.

• size() - Return the number of data in the cache.

• content() - Return the JSON string of cache.

Examples

var Cache = require("ds-cache");
 
// initial the cache instance
var cache = new Cache(
    {
        limit_bytes: '2M',  // limit file size
        auto_save:  true,
        filename: 'ds_cache.json'
    }
);
 
// add a data
cache.set('name', 'Donald');
 
// get value via key
cache.get('name');
 
// clear data via key
cache.clear('name');
 
// clear all data
cache.clear();
 

License

The MIT License (MIT)