lora-project/server-api/libs/memcache_lib.js

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2017-06-02 10:07:25 +00:00
const Memcached = require('memcached');
class memcachedLib {
constructor() {
this._host = ''
this._port = ''
this._expire = 86400
this._conn = null;
}
connect() {
this._conn = new Memcached(`${this._host}:${this._port}`)
}
/**
* set object to memcached
* @param {string} key
* @param {string} val
* @param {number} expire
*/
setVal(key, val, expire = this._expire) {
return new Promise((resolve, reject) => {
this._conn.set(key, val, err => {
if (err) return reject(err);
return resolve(null);
})
})
}
/**
* get object from memcached
* @param {string} key
*/
getVal(key) {
return new Promise((resolve, reject) => {
this._conn.get(key, (err, data) => {
if (err) return reject(err);
return resolve(data);
})
})
}
set host(str) { this._host = str }
set port(str) { this._port = str }
set expire(str) { this._expire = str }
}
module.exports = new memcachedLib();