Understand cron concepts
The cron daemon is a small subsystem composed of utilities and configuration files. cron of a certain style can be found in almost all UNIX-like systems. CronComponents include the daemon itself, a set of system-wide
Author:North SouthFrom:Linuxsir. orgAbstract:In a Linux operating system, scheduled tasks are usually undertaken by cron. Understanding or understanding cron can help us manage servers more conveniently and save more time. This article also provides
Allow crontab to automatically schedule rows of PHP
To use the crontab auto-dynamic PHP program, you can do this:
Method 11. Add the following in the first line of the PHP program:
#! /Usr/local/PHP/bin/PHP-Q
For example:
Plain textPHP:
#!
Little Chenbo main 2017-11-30 21:11:56
preface to the Broken language
In the stand-alone application period, the task scheduling is generally based on spring schedule and integrated quartz to achieve, when the system developed into distributed
Some want to run database operations at a specified time. If these operations are performed on the WEB Front-end, server resources will be wasted, because the WEB page needs to be refreshed continuously and then determined.
Some want to run database
This cron cannot be executed: * * * * * */bin/echo '/bin/date + "%y-%m-%d-%t" ' >>/home/adminuser/test.txt 2>&1 need to be modified to: because% is required in cron To be transferred */1 * * * */bin/echo/bin/date + "\%y-\%m-\%d-\%t"
There are many examples of Spring+quartz integration, where integration is not mentioned;
If you configure a fixed job, often use Methodinvokingjobdetailfactorybean, is also good, the problem is that this class does not implement serializable
There are many examples of the integration of Spring+quartz, not to mention integration here;If the configuration of fixed job, often use Methodinvokingjobdetailfactorybean, but also good, but the root of the problem is that this class does not
Detailed explanation of the Crontab command for scheduled tasks
Preface
Crontab is Unix and Linux commands used to set periodic execution. It is a very common technology on the Internet. Many tasks are set to run cyclically in crontab. If crontab is
One, commonly used interface:1. Job interface: This interface has only one method
void execute (Jobexecutioncontext context)
The developer implements this interface to define the tasks that need to be performed. The Jobexecutioncontext
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