blocks|key|166426|text|我推荐node-cron。它允许使用Cron模式运行任务，例如|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|166427|'*+*+*+*+*+*'+-+runs+every+second
'*/5+*+*+*+*+*'+-+runs+every+5+seconds
'10,20,30+*+*+*+*+*'+-+run+at+10th,+20th+and+30th+second+of+every+minute
'0+*+*+*+*+*'+-+runs+every+minute
'0+0+*+*+*+*'+-+runs+every+hour+(at+0+minutes+and+0+seconds)|code-block|syntax|javascript|166428|但也有更复杂的时间表，例如|166429|'00+30+11+*+*+1-5'+-+Runs+every+weekday+(Monday+through+Friday)+at+11:30:00+AM.+It+does+not+run+on+Saturday+or+Sunday.|166430|示例代码：每10分钟运行一次作业：|BOLD|166431|var+cron+=+require('cron');
var+cronJob+=+cron.job("0+*/10+*+*+*+*",+function(){
++++//+perform+operation+e.g.+GET+request+http.get()+etc.
++++console.info('cron+job+completed');
});+
cronJob.start();|166432|您可以在node-cron+wiki中找到更多示例|166433|有关cron配置的更多信息，请访问cron+wiki|166434|我已经在很多项目中使用过这个库，它也能做到这一点。我希望这会有所帮助。|166435|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/ncb000gt/node-cron|1|2|http://crontab.org/^0|3|9|3|9|0|0|0|0|0|0|4|0|0|4|9|1|0|H|4|2|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@$9|1B|A|1C|B|C]]|D|@$9|1D|A|1E|1|1F]]|E|$]]|$1|F|3|G|5|H|7|1G|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1H|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|1I|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|1J|8|@$9|1K|A|1L|B|Q]]|D|@]|E|$]]|$1|R|3|S|5|H|7|1M|8|@]|D|@]|E|$I|J]]|$1|T|3|U|5|6|7|1N|8|@]|D|@$9|1O|A|1P|1|1Q]]|E|$]]|$1|V|3|W|5|6|7|1R|8|@]|D|@$9|1S|A|1T|1|1U]]|E|$]]|$1|X|3|Y|5|6|7|1V|8|@]|D|@]|E|$]]|$1|Z|3|-4|5|6|7|1W|8|@]|D|@]|E|$]]]|10|$11|$5|12|13|14|E|$15|16]]|17|$5|12|13|14|E|$15|16]]|18|$5|12|13|14|E|$15|19]]]]

I would recommend <a href="https://github.com/ncb000gt/node-cron" rel="noreferrer"><code>node-cron</code></a>. It allows to run tasks using Cron patterns e.g.

<pre><code>'* * * * * *' - runs every second
'*/5 * * * * *' - runs every 5 seconds
'10,20,30 * * * * *' - run at 10th, 20th and 30th second of every minute
'0 * * * * *' - runs every minute
'0 0 * * * *' - runs every hour (at 0 minutes and 0 seconds)
</code></pre>

But also more complex schedules e.g.

<pre><code>'00 30 11 * * 1-5' - Runs every weekday (Monday through Friday) at 11:30:00 AM. It does not run on Saturday or Sunday.
</code></pre>

Sample code: running job every 10 minutes:


<pre><code>var cron = require('cron');
var cronJob = cron.job("0 */10 * * * *", function(){
 // perform operation e.g. GET request http.get() etc.
 console.info('cron job completed');
}); 
cronJob.start();
</code></pre>

You can find more examples in <a href="https://github.com/ncb000gt/node-cron" rel="noreferrer">node-cron</a> wiki

More on cron configuration can be found on <a href="http://crontab.org/" rel="noreferrer">cron</a> wiki

I've been using that library in many projects and it does the job. I hope that will help.

blocks|key|167542|text|我用过node-cron和agenda。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|167543|crontab+crontab是一个非常简单的库，它提供了像这样非常基本且易于理解的。它不需要任何配置，就能正常工作。|style|BOLD|167544|var+cronJob+=+require('cron').CronJob;
var+myJob+=+new+cronJob('00+30+11+*+*+1-5',+function(){...});
myJob.start();|code-block|syntax|javascript|167545|agenda非常强大，适合更复杂的服务。以ifttt为例，你必须运行数百万个任务。agenda将是最佳选择。|167546|注意:您需要使用Mongodb才能使用Agenda|167547|var+Agenda+=+require("Agenda");
var+agenda+=+new+Agenda({db:+{+address:+'localhost:27017/agenda-example'}});
agenda.every('*/3+*+*+*+*',+'delete+old+users');
agenda.start();|167548|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/ncb000gt/node-cron|1|https://github.com/rschmukler/agenda|2|http://ifttt.com/^0|3|9|0|D|6|1|0|U|C|0|0|0|6|15|6|L|5|2|0|8|7|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@$A|15|B|16|1|17]|$A|18|B|19|1|1A]]|C|$]]|$1|D|3|E|5|6|7|1B|8|@$A|1C|B|1D|F|G]]|9|@]|C|$]]|$1|H|3|I|5|J|7|1E|8|@]|9|@]|C|$K|L]]|$1|M|3|N|5|6|7|1F|8|@$A|1G|B|1H|F|G]|$A|1I|B|1J|F|G]]|9|@$A|1K|B|1L|1|1M]]|C|$]]|$1|O|3|P|5|6|7|1N|8|@$A|1O|B|1P|F|G]]|9|@]|C|$]]|$1|Q|3|R|5|J|7|1Q|8|@]|9|@]|C|$K|L]]|$1|S|3|-4|5|6|7|1R|8|@]|9|@]|C|$]]]|T|$U|$5|V|W|X|C|$Y|Z]]|10|$5|V|W|X|C|$Y|11]]|12|$5|V|W|X|C|$Y|13]]]]

I've used <a href="https://github.com/ncb000gt/node-cron" rel="noreferrer">node-cron</a> and <a href="https://github.com/rschmukler/agenda" rel="noreferrer">agenda</a>. 

node-cron is a very simple library, which provide very basic and easy to understand api like crontab. It doesn't need any config and just works.

<pre><code>var cronJob = require('cron').CronJob;
var myJob = new cronJob('00 30 11 * * 1-5', function(){...});
myJob.start();
</code></pre>

agenda is very powerful and fit for much more complex services. Think about <a href="http://ifttt.com/" rel="noreferrer">ifttt</a>, you have to run millions of tasks. agenda would be the best choice.

Note: You need Mongodb to use Agenda

<pre><code>var Agenda = require("Agenda");
var agenda = new Agenda({db: { address: 'localhost:27017/agenda-example'}});
agenda.every('*/3 * * * *', 'delete old users');
agenda.start();
</code></pre>

blocks|key|168556|text|我已经编写了一个节点模块，它使用moment+durations为setInterval提供了一个包装器，提供了一个声明性接口：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|168557|168558|+npm随时安装|blockquote|168559|168560|168561|var+every+=+require('every-moment');

var+timer+=+every(5,+'seconds',+function()+{
++++console.log(this.duration);
});

every(2,+'weeks',+function()+{
++++console.log(this.duration);
++++timer.stop();
++++this.set(1,+'week');
++++this.start();
});|code-block|syntax|javascript|168562|https://www.npmjs.com/package/every-moment|offset|length|168563|https://github.com/raygerrard/every-moment|168564|entityMap|0|LINK|mutability|MUTABLE|url|1^0|0|0|0|0|0|0|0|16|0|0|0|16|1|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|11|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|12|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|13|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|14|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|15|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|16|8|@]|9|@$O|17|P|18|1|19]]|A|$]]|$1|Q|3|R|5|6|7|1A|8|@]|9|@$O|1B|P|1C|1|1D]]|A|$]]|$1|S|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|N]]|Z|$5|V|W|X|A|$Y|R]]]]

I have written a node module that provides a wrapper around setInterval using moment durations providing a declarative interface:

<blockquote>
 npm install every-moment
</blockquote>

<pre><code>var every = require('every-moment');

var timer = every(5, 'seconds', function() {
 console.log(this.duration);
});

every(2, 'weeks', function() {
 console.log(this.duration);
 timer.stop();
 this.set(1, 'week');
 this.start();
});
</code></pre>

<a href="https://www.npmjs.com/package/every-moment">https://www.npmjs.com/package/every-moment</a>

<a href="https://github.com/raygerrard/every-moment">https://github.com/raygerrard/every-moment</a>

blocks|key|166506|text|nodeJS默认值|type|unstyled|depth|inlineStyleRanges|entityRanges|data|166507|https://nodejs.org/api/timers.html|offset|length|166508|setInterval(function()+{
++++//+your+function
},+5000);|code-block|syntax|javascript|166509|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|Y|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@$D|T|E|U|1|V]]|A|$]]|$1|F|3|G|5|H|7|W|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|C]]]]

nodeJS default

<a href="https://nodejs.org/api/timers.html" rel="noreferrer">https://nodejs.org/api/timers.html</a>

<pre><code>setInterval(function() {
 // your function
}, 5000);
</code></pre>

blocks|key|2979255|text|我认为最好的排名是|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2979256|2979257|+1.node-调度|blockquote|2979258|2979259|2.later|2979260|3.crontab|2979261|2979262|node-schedule示例如下：|offset|length|2979263|var+schedule+=+require("node-schedule");
var+rule+=+new+schedule.RecurrenceRule();
//rule.minute+=+40;
rule.second+=+10;
var+jj+=+schedule.scheduleJob(rule,+function(){
++++console.log("execute+jj");
});|code-block|syntax|javascript|2979264|也许你可以从node+modules那里找到答案。|2979265|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/node-schedule/node-schedule|1|https://nodejsmodules.org/tags/schedule^0|0|0|0|0|0|0|0|0|D|0|0|0|6|C|1|0^^$0|@$1|2|3|4|5|6|7|16|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|17|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|18|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|19|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|1A|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|1B|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|1C|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|1D|8|@]|9|@$N|1E|O|1F|1|1G]]|A|$]]|$1|P|3|Q|5|R|7|1H|8|@]|9|@]|A|$S|T]]|$1|U|3|V|5|6|7|1I|8|@]|9|@$N|1J|O|1K|1|1L]]|A|$]]|$1|W|3|-4|5|6|7|1M|8|@]|9|@]|A|$]]]|X|$Y|$5|Z|10|11|A|$12|13]]|14|$5|Z|10|11|A|$12|15]]]]

I think the best ranking is
<blockquote>
1.node-schedule
2.later
3.crontab
</blockquote>
and the sample of <a href="https://github.com/node-schedule/node-schedule" rel="noreferrer">node-schedule</a> is below:
<pre><code>var schedule = require(&quot;node-schedule&quot;);
var rule = new schedule.RecurrenceRule();
//rule.minute = 40;
rule.second = 10;
var jj = schedule.scheduleJob(rule, function(){
 console.log(&quot;execute jj&quot;);
});
</code></pre>
Maybe you can find the answer from <a href="https://nodejsmodules.org/tags/schedule" rel="noreferrer">node modules</a>.

blocks|key|168601|text|为此，我编写了一个小模块，名为|type|unstyled|depth|inlineStyleRanges|entityRanges|data|168602|它的简单，小，可靠的代码和没有dependencies|168603|Resolution是以毫秒为单位的，并具有高精度随着时间的推移|unordered-list-item|168604|
|168605|Cron一样，但不兼容(颠倒顺序和其他工作在浏览器太|168606|168607|安装：|168608|npm+install+timexe|code-block|syntax|javascript|168609|使用：|168610|var+timexe+=+require('timexe');
//Every+30+sec
var+res1=timexe(”*+*+*+*+*+/30”,+function()+console.log(“Its+time+again”)});

//Every+minute
var+res2=timexe(”*+*+*+*+*”,function()+console.log(“a+minute+has+passed”)});

//Every+7+days
var+res3=timexe(”*+y/7”,function()+console.log(“its+the+7th+day”)});

//Every+Wednesdays+
var+res3=timexe(”*+*+w3”,function()+console.log(“its+Wednesdays”)});

//+Stop+"every+30+sec.+timer"
timexe.remove(res1.id);|168611|您可以通过直接在timexe作业数组中删除/重新添加条目来实现启动/停止功能。但它不是一个表达式函数。|168612|entityMap^0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|11|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|12|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|13|8|@]|9|@]|A|$]]|$1|I|3|J|5|F|7|14|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|15|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|16|8|@]|9|@]|A|$]]|$1|N|3|O|5|P|7|17|8|@]|9|@]|A|$Q|R]]|$1|S|3|T|5|6|7|18|8|@]|9|@]|A|$]]|$1|U|3|V|5|P|7|19|8|@]|9|@]|A|$Q|R]]|$1|W|3|X|5|6|7|1A|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|Z|$]]

I have written a small module to do just that, called <a href="https://www.npmjs.com/package/timexe" rel="nofollow noreferrer">timexe</a>:

<ul>
<li>Its simple,small reliable code and has no dependencies</li>
<li>Resolution is in milliseconds and has high precision over time</li>
<li>Cron like, but not compatible (reversed order and other Improvements)</li>
<li>I works in the browser too</li>
</ul>

Install:

<pre><code>npm install timexe
</code></pre>

use:

<pre><code>var timexe = require('timexe');
//Every 30 sec
var res1=timexe(”* * * * * /30”, function() console.log(“Its time again”)});

//Every minute
var res2=timexe(”* * * * *”,function() console.log(“a minute has passed”)});

//Every 7 days
var res3=timexe(”* y/7”,function() console.log(“its the 7th day”)});

//Every Wednesdays 
var res3=timexe(”* * w3”,function() console.log(“its Wednesdays”)});

// Stop "every 30 sec. timer"
timexe.remove(res1.id);
</code></pre>

you can achieve start/stop functionality by removing/re-adding the entry directly in the timexe job array. But its not an express function.

I am looking for a node job schedule that will allow me to schedule a number of tasks at different intervals. For instance, 

<ul>
<li>call function A every 30 seconds</li>
<li>call function B every 60 seconds</li>
<li>call function C every 7 days</li>
</ul>

I also want to be able to start and stop the process.

So far, I have looked at:

<ul>
<li><a href="https://github.com/bunkat/later" rel="noreferrer">later</a> - the syntax confuses me, also apparently you cant schedule tasks beyond a month</li>
<li><a href="https://github.com/rschmukler/agenda" rel="noreferrer">agenda</a>- seems the most promising, however I'm confused about the database functionality</li>
<li><a href="https://github.com/inspiredjw/timeplan" rel="noreferrer">timeplan</a> - too simple, can't start and stop</li>
</ul>

I find the syntax of the latter confusing.

I need a Nodejs scheduler that allows for tasks at different intervals

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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