interval interval

The event scheduler in MySQL can periodically increase, delete, and execute operations on the database, which is equivalent to temporary triggers in the database, as with the execution plan tasks in the Linux system, which can greatly reduce the

Originating From: http://blog.chinaunix.net/uid-20639775-id-3323098.html MySQL Event learningIn System management or database management, it is often imperative to execute a command or SQL statement periodically. Anyone familiar with the Linux

In actual projects, you only want to save the records of the last seven days in the MySQL database. It is troublesome and inefficient to delete the records using SQL commands. You can use the event scheduler provided by Mysql. In actual projects,

In actual work, we often accidentally delete the database or table and regret it. Is there any regret to take? The delayed backup described today can be achieved. Delayed backup causes slave to lag behind the master for a period of time. When a

As an application, we sometimes expect that code execution is not entirely driven by Web users' requests. We hope that some specific tasks can be periodically and periodically executed when starting a Web process, this type of work is generally

MySQL database Event Scheduling) The event scheduler in MySQL can regularly add, delete, and execute operations on the database, which is equivalent to a temporary trigger in the database. It is the same as the execution plan task in Linux, which

Many times, weProgramYou need to regularly execute some tasks in the background thread, such as regularly sending emails. To put it simply, we can create a timer object and customize its callback events to meet specific business needs. For complex

OverviewThe event Scheduler is a new feature after MySQL5.1 that triggers a database to be triggered by a custom time period, which can be understood as a time trigger 类似于linux系统下面的任务调度器crontab，或者类似与window下面的计划任务 . It is worth mentioning that the

MySQL database Advanced (eight)--event One, Introduction to Events 1, Introduction to EventsAn event is a set of SQL sets that are used to perform timed tasks that are triggered when time is up.An event can be invoked once or periodically, and

Ext.: http://blog.chinaunix.net/uid-20639775-id-3323098.htmlIn System management or database management, it is often imperative to execute a command or SQL statement periodically. Anyone familiar with the Linux system knows the Cron scheduling task

The event scheduler in MySQL can periodically increase, delete, and execute operations on the database, which is equivalent to temporary triggers in the database, as with the execution plan tasks in the Linux system, which can greatly reduce the

1. Turn events on or off1) See if the event is turned on (two ways) like ' Event_scheduler ' ; SELECT @ @event_scheduler;2) Turn on MySQL events (two ways)SET = 1 ; SET = on;3) Turn off the MySQL eventSET = OFF ; SET @ @global = OFF ; SET = 0 ; SET @

I. UseUsed to execute an event at a certain time or to perform an event periodically.Two. SyntaxCREATE[definer = {User | Current_User}]EVENT[IF not EXISTS]Event_NameOn SCHEDULE SCHEDULE[on completion [NOT] PRESERVE][ENABLE | DISABLE | DISABLE on

For animation control, may be a bit of error, we will not be aware, but if the number of cyclic accumulation or network synchronization, and so on, we will be very aware of the schedule error problem.First do an example to prove

This article was reproduced from: http://www.cnblogs.com/forfuture1978/archive/2009/12/14/1623597.htmlLucene index What is stored in, how to store, that is, Lucene index file format, is to read the Lucene source code a key.When we actually enter the

Return to the top is often seen, the code is relatively simple, using two objects and a main function. It has clear responsibilities to facilitate reuse. In terms of performance, it considers the performance problems caused by frequent calls to

As we all know, jQuery is very powerful and has many very handsome plug-ins. Next we will introduce the jQuery timer plug-in jQueryTimers. That JS has its own timer. Why should we use Jquery? For convenience, Jquery has encapsulated the setTimeout

Author: SkateTime: 20141223 Database Availability monitoring tool [root @ skatedb66tmp] #. db_availability -- helpusage: Usedtoviewserveravailabilityv0.1, (C) CopyrightSkate2014 [-h] -- hostHOST -- userUSER -- passwdPASSWD [-- portPORT] [--

Log Server, the game server is an instance, an important database server, game server, and gateway server... generally, logs are processed by log4j, log4c in C, and log4cpp in CPP. Of course, these log tools are the mainstream open-source frameworks,

The complete "Logon/main form/user operation activation listener/automatic logout" model can automatically log out of the system when no operation is performed by the user within the specified time. It is consistent with the event registration