使用redis记录页面访问量

最近看过redis基本用法之后做了自己网站的访问量记录，下面是服务端代码：

const ioredis = require('ioredis');
const koa = require('koa');
const koaRouter = require('koa-router');
const bodyParser = require('koa-bodyparser');

const app = new koa();
const router = new koaRouter();
const connRedis = new ioredis({
  port: 6379,
  host: '127.0.0.1',
  password: 'xxxxxxxxx',
  db: 1
});

const redis = new Proxy(connRedis, {
  get(target, name) {
    const redis = function() {
      const args = arguments || [];
      return new Promise((rel, rej) => {
        return connRedis[name](...args, (err, result) => {
          if (err) return rej(err);
          return rel(result);
        });
      });
    };
    return redis.bind(connRedis);
  }
});

app.use(bodyParser());

app.use(async (ctx, next) => {
  ctx.set('Access-Control-Allow-Origin', 'https://blog.pingvim.com');
  ctx.set('Access-Control-Allow-Methods', 'GET');
  await next();
});

router.get('/xxxx', async ctx => {
  const {host, pathname} = ctx.request.query;

  if (!host || !pathname) {
    ctx.body = 'fail';
    return;
  }

  const count = await redis.hget(host, pathname);
  if (count) {
    redis.hincrby(host, pathname, 1);
    ctx.body = Number.parseInt(count) + 1;
  } else {
    redis.hmset(host, pathname, 1);
    ctx.body = 1;
  }
  return;
});

app.use(router.routes());
app.listen(xxxx);