Key-cache NPM | npm.io

key-cache

Storing data in the form of key into the file

Install

requires node 4+

npm install key-cache --save

Use

// Create reference
var KeyCache = require('key-cache');

// Examples of objects
var cache = new KeyCache(options);

// Here you can use to manipulate the cache api
cache.get('balbalbal');

The default configuration

options.dir

Cache directory path based on the current run directory

/**
 * @default key-cache installation path of .cache/ directory
 * @type {String}
 */

options.timeout

Save time, in seconds, if empty will always exist

/**
 * @default null
 * @type {number|null}
 */

options.md5key

Set whether to use md5 named cache file name，To path is valid, it will filter the illegal character key, in addition to Chinese, letters, numbers, -, other characters will be ignored outside _, regular use is/[^\u4e00-\u9fa5a-zA-Z\_\-0-9]/g.

/**
 * @default true
 * @type {Boolean}
 */

Api

set

Write data to a file

/**
 * @param {string} key
 * @param {Object|string} value
 * @param {Object|undefined} options        If there will override the default configuration
 * @return {Object} this
 */
set(key, value, options = {})

get

Get data from files

/**
 * @param  {string} key
 *
 * @return {Object|string|null}             If there is no time has expired or will return null
 */
get(key)

remove

Delete data, and delete files

/**
 * @param  {string|undefined} key
 *
 * @return {Object}     this
 */
remove(key)

Examples

Simple

var cache = new KeyCache();

cache.set('name', 'key-cache');

console.log(cache.get('name'));

cache.remove('name');

console.log(cache.get('name')); // => null

Custom cache directory

var cache = new KeyCache({
    dir: '../cache/'
});

cache.set('name', 'key-cache');

// override the default configuration
cache.set('name2', 'key-cache', {
    dir: './cache2'
});

Set the expiration time

var cache = new KeyCache({
    timeout: 3
});

cache.set('name', 'key-cache');

// override the default configuration
cache.set('age', 1, {
    timeout: 5
});

setTimeout(function(){
    console.log(cache.get('name')); // => null
    console.log(cache.get('age')); // => 1
}, 3000);

Delete Cache

var cache = new KeyCache();

cache.set('name', 'key-cache');
cache.set('age', 1);

// Delete single
cache.remove('name');

console.log(cache.get('name')); // => null
console.log(cache.get('age')); // => 1

// Delete all
cache.remove();

console.log(cache.get('age')); // => null

md5key

Do not use md5 named cache file

var cache = new KeyCache({
    md5key: false
});

cache.set('key', 'key-cache'); // => filename is key.json
cache.set('age', 1); // => filename is age.json
cache.set('this a space +-', 1); // => filename is thisaspace-.json
cache.set('中文', 1); // => filename is 中文.json

Develop

Use es6 development, compiler-dependent babel 6.x

// Run the compiler, the es6 code from the compiled into lib in src
npm run compile

// Monitor file changes and runs the compiler
npm run watch

// Use fecs run Style Checker
npm run check

// Use mocha run the test case
npm run test

// Run the test cases and code coverage
npm run test-cov