如何通过node_redis

时间:2018-09-24 13:26:40

标签: javascript redis nosql node-redis

我尝试在node_redis中创建队列。而且我不知道如何创建队列。我尝试使用zadd方法。我从REDIS运行了示例代码,下一个代码却出错:

var redis = require("redis");
client = redis.createClient();
const {promisify} = require('util');
const getAsync = promisify(client.get).bind(client);


client.on("error", function (err) {
    console.log("Error " + err);
});

var args = [ 'myzset', 1, 'one', 2, 'two', 3, 'three', 99, 'ninety-nine' ];
client.zadd(args, function (err, response) {
    if (err) throw err;
    console.log('added '+response+' items.');

    // -Infinity and +Infinity also work
    var args1 = [ 'myzset', '+inf', '-inf' ];
    client.zrevrangebyscore(args1, function (err, response) {
        if (err) throw err;
        console.log('example1', response);
        // write your code here
    });

    var max = 3, min = 1, offset = 1, count = 2;
    var args2 = [ 'myzset', max, min, 'WITHSCORES', 'LIMIT', offset, count ];
    client.zrevrangebyscore(args2, function (err, response) {
        if (err) throw err;
        console.log('example2', response);
        // write your code here
    });
});

client.quit();

一个错误:

enter image description here

对于诸如client.set或client.get的简单方法,我没有出错。 如何对node_redis使用其他方法? 我已经在Windows操作系统上安装了Redis。

1 个答案:

答案 0 :(得分:0)

我在question上找到了答案;

我应该打电话给client.quit();在下一种方法中:

var args = [ 'myzset', 1, 'one', 2, 'two', 3, 'three', 99, 'ninety-nine' ];
client.zadd(args, function (err, response) {
    if (err) throw err;
    console.log('added '+response+' items.');

    // -Infinity and +Infinity also work
    var args1 = [ 'myzset', '+inf', '-inf' ];
    client.zrevrangebyscore(args1, function (err, response) {
        if (err) throw err;
        console.log('example1', response);
        // write your code here
    });

    var max = 3, min = 1, offset = 1, count = 2;
    var args2 = [ 'myzset', max, min, 'WITHSCORES', 'LIMIT', offset, count ];
    client.zrevrangebyscore(args2, function (err, response) {
        if (err) throw err;
        console.log('example2', response);
        // write your code here
    });

    client.quit();
});

client.quit();必须在zadd方法内部。