Spring Cron scheduler “disable pattern”

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My application loads some cron patterns from a properties file. Im using the @Scheduled annotation like this:

@Scheduled(cron = "${config.cronExpression:0 0 11,23 * * *}")

Now I want to disable some tasks and the easiest solution would be to enter a cron pattern wich will never run. In order to do this, I thought about using a cron expression that only executes at a specific day in the past. But unfortunately the Spring cron expressions don't allow to add a year or a date in the past.

Is there any pattern that will never run?

Per the Javadocs, as of Spring 5.1.0 the @Scheduled annotation can accept "-" as the cron expression to disable the cron trigger.

The special value "-" indicates a disabled cron trigger, primarily meant for externally specified values resolved by a ${...} placeholder.

The @Scheduled Annotation in Spring, How to use the @Scheduled annotation in Spring, to run tasks after a the flexibility of a cron expression to control the schedule of our tasks:� Scheduling is a process of executing the tasks for the specific time period. Spring Boot provides a good support to write a scheduler on the Spring applications.

If it was a cron expression, you could have used below which makes the cron run on 2099

59 59 23 31 12 ? 2099

But spring scheduler does not take a year as input. This is what I have found to defer it for some extended period. Below will run on 29 Feb which will be a leap year.

0 0 0 29 2 ?

spring, spring documentation: Cron expression. Date; @Component public class Scheduler { private static final Logger log = LoggerFactory. Spring provides excellent support for both task scheduling and asynchronous method execution based on cron expression using @Scheduled annotation. The @Scheduled annotation can be added to a method along with trigger metadata. In this post, I will show the means to use @Scheduled feature in 4 different ways. Read More : Spring timer tasks

If you're stuck pre Spring 5.1.0 (SpringBoot < 2.1), your only option may be to disable the bean/service with the @Scheduled method altogether, for example by using a @ConditionalOnProperty("my.scheduleproperty.active") annotation and not setting the property (or setting it to false)

Spring cron expression for every day 1:01:am, I'm trying to have my code execute on a fixed schedule, based on a Spring cron expression. I would like the code to be executed every day at 1:� spring documentation: Cron expression. Example. A Cron expression consists of six sequential fields - second, minute, hour, day of month, month, day(s) of week

Getting Started, public class CronSequenceGenerator extends Object. Date sequence generator for a Crontab pattern, allowing clients to specify a pattern that the sequence� We can run a scheduled task using Spring's @Scheduled annotation but based on the properties fixedDelay and fixedRate the nature of execution changes. The fixedDelay property makes sure that there is a delay of n millisecond between the finish time of an execution of a task and the start time of the next execution of the task.

CronSequenceGenerator (Spring Framework 5.2.7.RELEASE API), Spring Boot provides a good support to write a scheduler on the Spring Java Cron expressions are used to configure the instances of CronTrigger, a subclass � I am trying to schedule a task in Spring which is to be run everyday at midnight. I followed the official guide from Spring and made the scheduler class as below: @Component public class OverduePaymentScheduler { @Scheduled(cron = "0 0 0 * * *") public void trackOverduePayments() { System.out.println("Scheduled task running"); } }

Spring Boot - Scheduling, Value of this attribute must be a cron expression. A sample class will look like this : DemoServiceBasicUsageCron.java. package com. The Spring Scheduling library allows applications to execute code at specific intervals. Because the intervals are specified using the @Scheduled annotation, the intervals are typically static and cannot change over the life of an application. In this tutorial, we'll look at various ways to conditionally enable Spring scheduled jobs. 2.

Comments
  • I'm not sure if this helps, but I know we localy use the cron-expression 'none' successfully. But this might be a hack... Other people suggest using February 31th, or December 31th 2099... stackoverflow.com/questions/8324306/… stackoverflow.com/questions/13835221/…
  • This is the better option if the value is being read from an external file and a code change is not desired