Quartz Expression that runs every minute only once

Question

I have this quartz cron expression: exp = "0 * * ? * *" that runs every minute. I use this expression as a trigger to call a HTTP POST method every minute. The problem is that it calls the post method multiple times. I need an expression that will execute one time in a minute. Any suggestion how to do that?

score 13 · Accepted Answer · answered Aug 27 '18 at 19:12

13

This works with Quartz.

Every 1 minute, exactly at the start of a minute - 0 0/1 * * * ?

answered Aug 27 '18 at 19:12

Anil Konduru

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score 3 · Answer 2 · answered Aug 17 '18 at 14:18

How about a simple schedule trigger instead?

trigger = newTrigger()
    .withIdentity("trigger7", "group1")
    .withSchedule(simpleSchedule()
        .withIntervalInMinutes(1) )
    .build();

Source : Quartz tutorial-lesson-05 / Build a trigger that will fire now, then repeat every five minutes

score 1 · Answer 3 · answered Oct 23 '18 at 07:22

1

It may happen because request lasts longer than 1 min. You can simply annotate class implemented with Jobs with @DisallowConcurrentExecution, which disallow your job execute multiple times in exact time. You can check example .

answered Oct 23 '18 at 07:22

Xavizo

69
1
1
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score -1 · Answer 4 · answered Aug 16 '18 at 15:58

-1

use this expression :

"* * * * *"
i.e 5 asteriks
try using that. use this link for reference :
https://crontab.guru/every-1-minute

answered Aug 16 '18 at 15:58

dangi13

1,275
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11

It doesen't work. The expression is not valid. The expression should be a quartz one. – Eraldo Forgoli Aug 17 '18 at 11:40

Quartz Expression that runs every minute only once

4 Answers4