util cache.js

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const {redisCli} = require('../db/redis')
 
exports.get = (key) => {
  return new Promise((resolve, reject) => {
    redisCli.get(key, (err, data) => {
      if (err) {
        reject(err);
      }
      if (!data) {
        resolve(data);
      }
      data = JSON.parse(data);
      resolve(data);
    });
  });
}
 
// time 参数可选，秒为单位
exports.set = (key, value, time) => {
  return new Promise((resolve, reject) => {
    value = JSON.stringify(value);
    if (!time) {
      redisCli.set(key, value, (res) => {
        resolve(res);
      });
    } else {
      redisCli.setex(key, time, value, (res) => {
        resolve(res);
      });
    }
  });
}