I am implementing a cron job which was running at hours.
let cron= require('node-cron');
cron.schedule('0 0-23 * * *', ()=> {
cronjob.deletdOldFiles();
});
and it is working fine. but now the solution I want is to call cron job at every 12am according to USA timezone Timezone is compulsory.
Like this:
let cron = require('node-cron')
cron.schedule('0 0-23 * * *', () => {
cronjob.deletdOldFiles()
},
{
timezone: 'America/Chicago'
}
);
Related
I want to develop an app which needs to run a scheduled job which writes something to database for every 15 minutes from 9 am to 9 pm
How can i implement this?
Thanks
Look into this package: https://www.npmjs.com/package/node-cron
Here's an example from their docs:
var cron = require('node-cron');
cron.schedule('*/2 * * * *', () => {
console.log('running a task every two minutes');
});
To write to the database the details vary based on what database you're using exactly. For simplicity you can use Express to connect + write to a DB quickly.
Read more here: https://expressjs.com/en/guide/database-integration.html
You can do this.
const CronJob = require("cron").CronJob;
console.log("Before job instantiation");
const job = new CronJob("0 */15 9-21 * * *", function () {
const d = new Date();
console.log("Every 15 minutes between 9-21:", d);
});
console.log("After job instantiation");
job.start();
I have the following function that runs every hour but I would like it to run once per day at 3 AM:
setInterval(async () => {
await updateData();
}, 1000 * 60 * 30);
How can I achieve this?
setInterval doesn't have this functionality directly. You could play around with date math to make this happen, but honestly, the easiest approach would probably be to use a thrid-party that does this for you, like node-cron.
First, you'd need to install it:
npm install node-cron
Then, in your code:
cron = require('node-cron');
cron.schedule('0 3 * * *', async () => {
await updateData();
});
How can I execute this with different timings? Please help on this. Thanks in Advance...
const Cron = require('node-cron');
const Cron2 = require('node-cron');
var TaskOne = Cron.schedule('*/10 * * * *', async() => {
//first job implemented here and its working fine
function1();
});
var TaskTwo = Cron2.schedule('*/11 * * * *', async() => {
// Second job implemented here....
//Why this block is not getting executed???????????????????????
function2();
});
How can I execute this with different timings? TaskTwo is not getting executed. Debugger not goes into TaskTwo. Please help on this. Thanks in Advance...
if node-cron is not the only prefrence for you then you can use https://github.com/agenda/agenda
There's no need to require the same package twice, so you should remove Cron2 on the second line. Thus the line var TaskTwo = Cron2.schedule('*/11 * * * *', async() => { should be changed to:
var TaskTwo = Cron.schedule('*/11 * * * *', async() => {
As for why the second schedule is not working, it might be because you didn't start() the schedule, as shown in https://github.com/node-cron/node-cron#start. So adding the code below at the end of your script might trigger both cron to run:
TaskOne.start();
TaskTwo.start();
I need to call a function every given period of time on a route for example my function:
function hello(){
console.log("Hi")
}
app.post("/", (req,res) => {
res.send("Hi")
hello()
}
Well, I didn't put all the code in my application, just the part that matters, I need to call the hello function every 5 seconds. I need to use this method of calling a given function every given period, in my application.
you can use node-schedule !
for example: Execute a cron job every 5 Minutes = */5 * * * *
var schedule = require('node-schedule');
var j = schedule.scheduleJob('*/5 * * * *', function(){
console.log('The answer to life, the universe, and everything!');
});
Another solution:
setInterval
setInterval(() => {
// do something every 5 seconds
}, 5000);
I'm using Cron; a nodejs package for cron job handling in NodeJs. Here's how I'm running a cron job:
var job = new CronJob({
cronTime: '00 30 11 * * 1-5',
onTick: function() {
/*
* Runs every weekday (Monday through Friday)
* at 11:30:00 AM. It does not run on Saturday
* or Sunday.
*/
}
});
job.start();
It's running flawlessly but is there any standard way to handle exception dates array handling? For example here's my dates array of national holidays and I don't want to run my cron job on these days:
['28-01-2017', '1-05-2017', '14-08-2016', '15-09-2016', '16-09-2016']
You can not add exclusions to your cron job. You are much better off adding to your code the logic to not run on those days.
var job = new CronJob({
cronTime: '00 30 11 * * 1-5',
onTick: function() {
var exclude = ['28-01-2017', '1-05-2017', '14-08-2016', '15-09-2016', '16-09-2016']
if (exclude.indexOf(convertDate()) > -1) {
console.log('dont run');
} else {
console.log('run');
}
}
});
job.start();
function convertDate() {
var d = new Date();
return [pad(d.getDate()), pad(d.getMonth()+1), d.getFullYear()].join('-');
}
function pad(s) {
return (s < 10) ? '0' + s : s;
}