quartz-scheduler | 易学教程

Which is more efficient: Netty's HashedWheelTimer or Quartz's scheduler?

阅读更多关于 Which is more efficient: Netty's HashedWheelTimer or Quartz's scheduler?

HashedWheelTimers are based on this 1987 paper about how traditional timers consume O(N) processing to maintain (for N timers), but hashed wheels can consume O(1). I'm unsure if Quartz's job scheduling just managers timers underneath, or actually uses an O(1) solution under the covers. The Quartz scheduler is designed for scheduling persistent jobs. So, when Quartz comes up after going down, it can see what jobs were supposed to run but didn't and optionally run th em. HashedWheelTimer is designed to scale to thousands of timers. They're solving two very different problems. 来源： https:/

Using grails datasources in quartz plugin

阅读更多关于 Using grails datasources in quartz plugin

I want to create quartz jobs that use a JdbcStore as described in the clustering section of the docs , in Burt's example. The example shows how to configure quartz using a quartz.properties file. Now, I'd like my jdbc store to be the same database as my grails application, so that I have less settings to duplicate. So, assuming I manually create the required tables in my database, is it possible to use the default dataSource configured in Datasource.groovy with the quartz plugin ? I'm using grails 2.4.4 and quartz 1.0.2. In other terms, can I add my settings to QuartzConfig.groovy rather than

Add multiple triggers to single quartz job

阅读更多关于 Add multiple triggers to single quartz job

问题 I want to dynamically add triggers to a job, but can't find any helpful methods off of Scheduler I though i would just be able to call the scheduleJob method an repetitively, but this gives me tthe ObjectAlreadyExists Exception "because one already exists with this identification". How can i do this? EDIT private boolean scheduleLoadJob( XfuScheduleTimeInfo time ) { LoadScheduleJob job = new LoadScheduleJob( time ); JobDetail detail; Integer id = Integer.valueOf( time.getScheduleId() ); if(

How to check if a job is running in Quartz Framework

阅读更多关于 How to check if a job is running in Quartz Framework

问题 I want to use Quartz Framework in my application. There are two jobs in the scheduler. Now I want to check if job1 is running. How can I check? I have tried to Google it but failed to find the solution. I am following the first of example from Quartz distribution. 回答1: You can use scheduler.getCurrentlyExecutingJobs() to get a list of all jobs which are currently running. 回答2: Please note scheduler.getCurrentlyExecutingJobs() just check for the current scheduler instance，not the whole cluster

Is there a difference between ? and * in cron expressions? Strange example

阅读更多关于 Is there a difference between ? and * in cron expressions? Strange example

问题 I have the following cron expression in my system: 0 0 0/1 1/1 * ? * and you know what? I have no idea what it means. The guy who has written it is on his holiday for the next 2 weeks so I have to find out on myself. The documentation can be found here According to the documentation we have: * * * * * * * | | | | | | | | | | | | | +-- Year (range: 1970-2099) | | | | | +---- Day of the Week (range: 1-7 or SUN-SAT) | | | | +------ Month of the Year (range: 0-11 or JAN-DEC) | | | +-------- Day

QuartzScheduler injection in JBoss AS 6

阅读更多关于 QuartzScheduler injection in JBoss AS 6

How can i inject QuartzScheduler service into my Stateless bean on JBoss AS 6 ? Quartz service does start during JBoss AS 6 startup 00:58:38,025 INFO [QuartzScheduler] Scheduler meta-data: Quartz Scheduler (v1.8.3) 'JBossQuartzScheduler' with instanceId 'NON_CLUSTERED' Scheduler class: 'org.quartz.core.QuartzScheduler' - running locally. NOT STARTED. Currently in standby mode. Number of jobs executed: 0 Using thread pool 'org.quartz.simpl.SimpleThreadPool' - with 10 threads. Using job-store 'org.quartz.simpl.RAMJobStore' - which does not support persistence. and is not clustered. 00:58:38,026

Getting Quartz.net to ignore misfires

阅读更多关于 Getting Quartz.net to ignore misfires

I'm building a windows service which is performing a scheduled task which processes a queue of commands (from a legacy system) at a regular interval (once per min) using Quartz.net If the task takes longer than 1 min, which would be unusual but possible under certain circumstances, I'd like it to simple ignore the triggers it missed firing. However I can't seem to get this to happen. It does the processing and then quickly fires all the triggers it missed in quick succession. As I understand you can set a threshold for the misfires but I don't seem to be-able to get this working. I'm using

Any relation between Quartz API and Joda Time API?

阅读更多关于 Any relation between Quartz API and Joda Time API?

Is it possible to create a date in JodaTime and then make Quartz schedule the job using the JodaTime object? Can we give a Period jodaPeriod to Quartz API in order to run a task for a particular period in a day? Are the two APIs related and/or compatible in any way? The AxonFramework has a QuartzEventScheduler which looks like it does what you want. Here's the downlaod page and it's under the Apache 2.0 license. Quartz provides a pretty comprehensive API that you could extend anyway you wanted. The hook you would need to create would be against the Trigger interface, I've created one before

quartz scheduler: run on last day of the month

阅读更多关于 quartz scheduler: run on last day of the month

I need to run a job on the last day of every month. i tried the following cron expression: <property name="cronExpression" value="0 0 3 L * * *" /> but got this error: Caused by: java.lang.UnsupportedOperationException: Support for specifying both a day-of-week AND a day-of-month parameter is not implemented. it doesnt like the L , but without using it, how can i run on the last day of the month? Just change your trigger to 0 0 3 L * ? One of day of week or day of month needs to be ? . You cannot specify both. 来源： https://stackoverflow.com/questions/4962011/quartz-scheduler-run-on-last-day-of

Is there a difference between ? and * in cron expressions? Strange example

阅读更多关于 Is there a difference between ? and * in cron expressions? Strange example

I have the following cron expression in my system: 0 0 0/1 1/1 * ? * and you know what? I have no idea what it means. The guy who has written it is on his holiday for the next 2 weeks so I have to find out on myself. The documentation can be found here According to the documentation we have: * * * * * * * | | | | | | | | | | | | | +-- Year (range: 1970-2099) | | | | | +---- Day of the Week (range: 1-7 or SUN-SAT) | | | | +------ Month of the Year (range: 0-11 or JAN-DEC) | | | +-------- Day of the Month (range: 1-31) | | +---------- Hour (range: 0-23) | +------------ Minute (range: 0-59) +----