key-cache

Storing data in the form of key into the file

Install

requires node 0.12+

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

Changelog

0.2.8

Add nodejs 6.x test environment

0.2.7

Update test case to ES6

0.2.6

babel 6.x upgrade to compile

0.2.3

Modify precommit to prepush
Add release.sh, refer vue

0.2.1

Return Value Type Repair function when the value is, the change from the undefined to null~

0.2.0

Add options.md5key parameter is used to set whether to use md5 named cache file name

0.1.x

Optimized code, add a test case

License

MIT

Joe3Ray/key-cache