redelivery scheduled

When messages expire in the ActiveMQ broker (they exceed their time-to-live, if set) or can ' t be redelivered, they ' re move D to a dead-letter queue, so they can is consumed or browsed by an administrator at a later point.Messages is redelivered to a client if any of the following occurs: A transacted session is used and rollback () is called. A transacted session is closed before commits is called. A session is the using Client_acknowledge and Session.recover () is called.

Spring Boot:@EnableScheduling turn on scheduled task support,@Scheduled Scheduled Task statement1 Package Ch2.scheduler2;2 3 //Date Conversion Mode4 import Java.text.SimpleDateFormat;5 import java.util.Date;6 7 //Scheduled Task Statement8 import org.springframework.scheduling.annotation.Scheduled;9 //Spring Component A

Spring @ Scheduled @ Async implements scheduling tasks in combination, @ scheduled @ async The Scheduled task has been using quartz and so on before, but I noticed that Spring actually provides a simple scheduling annotation @ Scheduled, so I just want to try it out .. The Code is as follows: @ Component @ EnableSchedu

Spring-boot uses @ Scheduled to configure Scheduled tasks, Serial scheduled task @ ComponentPublic class ScheduledTimer {Private Logger logger = Logger. getLogger (this. getClass ());/*** Scheduled tasks are executed once every minute to update the shared status of potential customers who have timed out.*/@

Execute scheduled tasks (multithreading) and scheduled tasks in Web Applications In applications with complex services, sometimes one or more tasks are required to be scheduled at a certain time or interval, such as regular backup or database synchronization, scheduled sending of emails is called

Use PhP to send scheduled text messages (for weather forecasts, scheduled reminders, SMS greetings, and so on) for free. use PhP to send scheduled text messages for free nbsp; background: old mom, not highly educated, however, you need to know the weather information every day before you can go to work, so you cannot get the weather through the Internet, but you

This blog refers to the post address . 1.pom dependencies:The introduction of Springboot starter package canDependencies> Dependency> groupId>Org.springframework.bootgroupId> Artifactid>Spring-boot-starterArtifactid> Dependency> Dependency> groupId>Org.springframework.bootgroupId> Artifactid>Spring-boot-starter-testArtifactid> Scope>TestScope> Dependency> Dependency> groupId>Org.springframework.bootgroupId> Artifactid>Spring-boot-d

PHP does not support multithreading. sometimes it is not so nice to handle the problem. today, let's talk about three methods of PHP scheduled execution: PHP scheduled execution. 1. windows scheduled tasks 2. linux script program 3. regularly refresh web browsers Implementation Windows scheduled taskPHP rarely run o

The use of annotations is enhanced in Spring3, where the scheduled tasks are enhanced, and it is now only two steps to create a scheduled task: Create a Java class, add a method with no parameter and no return value, and decorate it with @scheduled annotations on the method; Add three Finally, the Java class created in the first step is to be a

Regular tasks have always been a problem for many friends in PHP, but they are encountered in many places.For example:In game development programs, send troops to players every 10 minutesIn the SNS community, check if someone sends me a message every 20 seconds.The automatic collection program collects the latest content every 5 minutes.Weibo Data Synchronization: user data is synchronized every 10 hours through the Weibo API...... Because PHP is a weak interpreted language, it is not as easy as

As title shows, sometimes we need to configure simple scheduled tasks in a Web project, and because the tasks are not complex and do not want to use a scheduled scheduling framework (Ps:quartz, ActiveMQ, Kafka, etc.), consider using @scheduled annotations to define simple scheduled tasks. Its full configuration is as f

A simple word, chosen by the cloud-dwelling community, solves the problem. Explorer "Http://www.jb51.net?opt=make" Save the above code as Dositemap.bat. Then add to the scheduled task Windows Planning Tasks 1, write a PHP program, named test.php, the content is as follows: ? $fp = fopen ("Test.txt", "A +"); Fwrite ($fp, Date ("Y-m-d h:i:s"). "Success!" he said. \ n "); Fclose ($FP); The program boldly writes, what inclu

Currently, scheduled operations include: 1. Regular Refresh of Html pages (Refresh-Refresh) 1. Refresh (Refresh) code instructions Note: The time (in seconds) for a webpage to refresh itself, or the time after which the webpage is automatically linked to another webpage. Usage: Note: 5 indicates that the URL is automatically refreshed after 5 seconds. 2. How to perform scheduled operations You can refresh

I hope this article will be helpful for you to use spring @ Scheduled annotations to execute Scheduled tasks. JavaApplicationContext. xml configuration: Add a namespace: The Code is as follows: Copy code Xmlns: task = "http://www.springframework.org/schema/task"Xsi: schemaLocation ="Http://www.springframework.org/schema/taskHttp://www.springframework.org/schema/task/spring-task-3.0.x

Web.xml configuration: Xmlns= "Http://java.sun.com/xml/ns/javaee" Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance" Xsi:schemalocation= "Http://java.sun.com/xml/ns/javaee Http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd "> Applicationcontext.xml configuration: Xmlns= "Http://www.springframework.org/schema/beans" Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance" xmlns:p= "http://www.springframework.org/schema/p" xmlns:context= "Http://www.springframework.org/schema/context" xmlns:

1. Create a batch file@echo off rem ########################################################### rem # Windows Server 2008 Oracle Database Automatic backup batch script REM ###########################################################Setcurdate=%date:~0,4%%date:~5,2%%date:~8,2%Sethour=%time:~,2%if "%time:~,1%"==" " SetHour=0%time:~1,1%Setcurtime=%hour%%time:~3,2%%time:~6,2%REM Setting the database name, user name, and passwordSetOwner=ORCLSetUser=FlzdSetpassword=Flzdrem Create a backup directory wi

Data Synchronization: user data is synchronized every 10 hours through the Weibo api...... There are several methods:1. LinuxYou can use cron to execute a php script or a script in other languages at regular intervals. [You must have sufficient system permissions]Execute the edit cron command 1 crontab-e For example, run the test. php script in the/root/bin directory every five minutes. */5 * php/root/bin/test. php 2. windowsExecute scripts for

1. Backup:Ps:2014-1-15If the exported DMP data file is not large, it is exported directly every day, do not save only seven days of data. Then, the file is packaged by WinRAR, and I find that the DMP files are still very compressed.Then you need to consider adding a date to the end of the exported DMP file. The bat script has a function of date and time, and we can get the desired date by the following function. If the requirement date is end with "-", the format of the date needs to be yyyy-m-d

Ignore_user_abort (); Turn off the browser and the PHP script will continue to execute. Set_time_limit (0); Set_time_limit (0) allows the program to be implemented without restrictions The code is as follows: 1 Php2Ignore_user_abort();3Set_time_limit(0);4$interval= 5;//runs every 5 seconds5$k= 0;6 Do {7$time= Time();8$file= './test.txt ';9$content= "Cron:".Date(' y-m-d h:i:s ');Ten$fp=fopen($file, ' a '); Onefwrite($fp,$content); Afclose($fp); -if($k>=5){ - Break; the } -$k++; -Sleep(

PHP scheduled execution in three ways 1. windows scheduled tasks 2. linux script program 3. Regularly refresh web browsers Implementation Windows scheduled task PHP rarely run on the Windows server, the specific implementation is not further study, see the principle of online implementation is probably write bat script, and then let the window task to add the ex