engine building books

can easily lead to multiple instances being invoked by chance. The standard technique to ensure this exclusive is to have the script lock a particular file (often a lock file, and be used as a flock) by using the (). If the lock fails, the script should output an error and exit. Here is an example: $FP =fopen ("/tmp/.lockfile", "a"); if (! $fp | |!flock ($FP, LOCK_EX | LOCK_NB)) { Fputs (STDERR, "Failed to acquire lock\n"); Exit } /* Successfully locked to perform work safely Note that the di

tables and thus simplify the underlying queries (table and SQL query optimizations are highly dependent on patterns and engines.) You can find various articles and books on database performance by searching online. In addition, you can add a specialized search engine. Which form of search engine is applied also depends on the form (and quantity) of the data and

: Create the package Com.itheima.crm.domain Step three : Select the MyEclipse DataBase Explorer view Step four : Right-click New database Connection (new) Step five : Create new Connection Details Step Six : Select all the tables and use Hibernate to reverse the engine Step Seven : Configure the Reverse engine 1 Step Eight : Determine the primary key generation strategy Step Nine: Copy the PO class

Unity3d game engine: Building a simple game world If the original Yusong Momo article is reprinted, please note: Reprinted to my independent domain name blog Yusong Momo program Research Institute, Original address: http://www.xuanyusong.com/archives/473 Create game ground Create a new game project named firstgame. If the default main camera is displayed in the scenario view, add a game ground, as

first contact. Because Baidu comes out of the article is not necessarily based on that version.Two InnoDB log filesThe redo log of InnoDB can be configured as multiple files through the parameter Innodb_log_files_in_group, and the other parameter innodb_log_file_size represents the size of each file. So the total redo log size is Innodb_log_files_in_group * innodb_log_file_size.The Redo log file is named Ib_logfile[number] and the log directory can be controlled by parameter innodb_log_group_ho

Building a quiz Engine 1 In this lesson, you will begin in to see the creation of the quiz engine. This will allow you to exercise the skills developed in the earlier videos. Duration 22 minutes, 32 seconds Watch video Visual Basic Visual C # Download video Visual Basic Visual C # Downlo

Original article address: Building a Simple Blog Engine with ASP. net mvc and LINQ-Part 3 Summary In the third part of this series, Keyvan discusses the data models in the blog engine, which obtain data from the Controller and pass it to the View. With the help of the Code, he showed us the related concepts of the data model in terms of LINQ. Content Introducti

Summary Microsoft released the first CTP version of ASP. NET 3.5 Extensions, which contains an important extensions of ASP. NET 3.5: ASP. net mvc Framework. ASP is used in this series of articles. net mvc and LINQ build a simple Blog system. In the first part, Keyvan introduces the MVC mode and ASP. net mvc Framework and basic principles of the simple Blog system.Original article address: Building a Simple Blog En