• Cron and rabbitmq are used to implement scheduled tasks in the project


    Implementation idea: the rabbitmq module is introduced into the scheduled task, the rabbitmq module adds the corresponding message listening, and the cron method is used to configure the scheduled task in the scheduled task module. New module service_ Task, add dependencies and introduce the MQ tool class module created before <dependencies> <dependency> <groupId>com.lzq</groupId> <artifactId>rabbit_util</artifactId> <version>0.0.1-SNAPSHOT</version> […]

  • On: summary of common symbols for Linux cron planning tasks


     [[email protected] ~]# crontab –help crontab: invalid option — ‘-‘ crontab: usage error: unrecognized option usage: crontab [-u user] file crontab [-u user] [ -e | -l | -r ] (default operation is replace, per 1003.2)-E (edit user’s crontab) edit crontab work content-L (list user’s crontab) to view the work content of crontab-R (delete user’s crontab) […]

  • Method of cron jobs executing PHP regularly under cPanel


    Open the cPanel management background, and there is a “clock guard job” under the “advanced” option, as shown in the figure below. Click to enter. There are three options on the setting page: cron email (notify email address, which will be notified every time the scheduled execution succeeds or fails), add new cron job (add […]

  • The usage of cron command in Linux


    There is a command in Linux that can perform system tasks on a regular basis. This is the crond service. Here’s how to use the crontab command.Linux task scheduling is mainly divided into the following two categories:Edit / etc / crontab file to configure CronCron service not only needs to read all the files in […]

  • Implementation example of golang cron timing task


    Write one to the point package main import ( “fmt” “github.com/robfig/cron” “log” “strings” “time” ) func CronTask() { log.Println(“******** ******* *******”) } func CronTest() { log.Println(“Starting Cron…”) c := cron.New() c. Addfunc (“* * * *”, crontask) // 2 * * * *, 2 means that it is executed once every second of the minute […]

  • Detailed explanation of the use of go timer Cron


    What is Cron Cron means to plan a task. To put it bluntly, it’s a scheduled task. I’ll make an appointment with the system. You can run a job in a few minutes or seconds or every few minutes. That’s easy. cron expressions Cron expression is a good thing, which can be used not only […]

  • Execute commands and scripts regularly on Linux (cron, crontab, anacron)


    Human beings cut time and imagine a straight line moving forward forever. Originally, there is nothing on this line. But according to the length of time (unit), human beings make dense marks on this line (century-year-month-day-hour-minute-second-nanosecond…). In this way, every moment in history can be taken out separately, and every moment in the future. Times […]