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norepeat

v1.0.2

Published

check if it's repeat in seconds

Readme

node-no-repeat

本质是通过redis的set方法的NX参数进行防重。

从 Redis 2.6.12 版本开始, SET 命令的行为可以通过一系列参数来修改: EX second :设置键的过期时间为 second 秒。 SET key value EX second 效果等同于 SETEX key second value 。 NX :只在键不存在时,才对键进行设置操作。 SET key value NX 效果等同于 SETNX key value 。 英文文档 https://redis.io/commands/set 中文文档 http://redisdoc.com/string/set.html

目前只有一个方法:

isRepeat({

​ name: 用以确认是否重复的key

​ ttl: 时间间隔

},callback)

callback会接受两个参数:error, isRepeat。

isRepeat:true 不重复

​ false 重复

示例如下:

const redis = require('redis');
const NoRepeat = require('norepeat');
// 配置redis
let client = redis.createClient({
    host: '127.0.0.1',
    db: 1
});
let noRepeat = new NoRepeat(client);
noRepeat.isRepeat({
    name: name,
    // 1 times/second
    ttl: 1
}, (error, isRepeat) => {
    if(isRepeat === true){
        // it's ok
    }
    if(isRepeat === false) {
        // it's repeat
    }
})