cache.js
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import config from '@/config/index.js';
const __NAME__ = config.name || 'MA';
/**
* 缓存数据优化
* var cache = require('utils/cache.js');
* import cache from '../cache'
* 使用方法 【
* 一、设置缓存
* string cache.put('k', 'string你好啊');
* json cache.put('k', { "b": "3" }, 2);
* array cache.put('k', [1, 2, 3]);
* boolean cache.put('k', true);
* 二、读取缓存
* 默认值 cache.get('k')
* string cache.get('k', '你好')
* json cache.get('k', { "a": "1" })
* 三、移除/清理
* 移除: cache.remove('k');
* 清理：cache.clear();
* 】
* @type {String}
*/
const prefix = config.env === 'release' ? `${__NAME__.toUpperCase()}_` : `${__NAME__.toUpperCase()}_${`${config.env}`.toUpperCase()}_`;
const postfix = '_SEED';
/**
* @description 设置缓存
* @param {String} k [键名]
* @param {Any} v [键值]
* @param {Number} t [时间、单位秒]
*/
function put(k, v, t) {
uni.setStorageSync(prefix + k, v)
var seconds = parseInt(t);
if (seconds > 0) {
var timestamp = Date.parse(new Date());
timestamp = timestamp / 1000 + seconds;
uni.setStorageSync(prefix + k + postfix, timestamp + "")
} else {
uni.removeStorageSync(prefix + k + postfix)
}
}
/**
* 获取缓存
* @param {String} k [键名]
* @param {Any} def [获取为空时默认]
*/
function get(k, def) {
var deadtime = parseInt(uni.getStorageSync(prefix + k + postfix))
if (deadtime) {
if (parseInt(deadtime) < Date.parse(new Date()) / 1000) {
if (def) {
return def;
} else {
return false;
}
}
}
var res = uni.getStorageSync(prefix + k);
if (res) {
return res;
} else {
if (def == undefined || def == "") {
def = false;
}
return def;
}
}
/**
* @description 删除缓存
* @param {String} k 键值
*/
function remove(k) {
uni.removeStorageSync(prefix + k);
uni.removeStorageSync(prefix + k + postfix);
}
/**
* @description 清理所有缓存
*/
function clear() {
uni.clearStorageSync();
}
module.exports = {
put: put,
get: get,
remove: remove,
clear: clear,
}