javascript - 登录系统 - Node.js 和 Redis

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我想使用 node.js 和 Redis(Redis 包)创建登录系统，但每次我将输入数据与数据库数据进行比较时，我都会得到一个令人困惑的结果。这是第一种方法:

const Redis = require("redis");
const client = Redis.createClient();
exports.userLogin = (username, password, errMsg, successMsg, res) => {
  client.keys("user*", (err, replies) => {
    let isFound = false;
    for (let i = 0; i < replies.length; i++) {
      client.hgetall(replies[i], (err, value) => {
        if (value.user === username && value.password === password) {
          isFound = true;
        }
      }); 
    }
    console.log(isFound);
    if (isFound) {
      successMsg(username, res);
    } else {
      errMsg(res);
    }
  })
)}

即使登录名和密码没问题，我也一直报错，而且它不执行 errMsg 函数第二个例子:

exports.userLogin = (username, password, errMsg, successMsg, res) => {
    client.keys("user*", (err, replies) => {
        for (let i = 0; i < replies.length; i++) {
          client.hgetall(replies[i], (err, value) => {
            if (value.user === username && value.password === password) {
              successMsg(username, res);
            } else {
              console.log("length: ", replies.length - 1);
              console.log("i: ", i);
              if(replies[i] === replies.length - 1) {
                errMsg(res);
              } else {
                console.log("else statement: ", replies[i] === replies.length - 1);
                return true;
              }
            }
          });
        }
      })
)}