fips mode

Yesterday in the virtual machine installed CentOS 7 o'clock selected Gnome mode installation, boot default into GUI mode. Search online to modify the default command-line mode method, see said to modify the/etc/inittab file, at the lowest next line to addID:3But usingCat /etc/inittabcommand to view the Inittab file, you can see the following:The contents of the f

Builder Builder Mode (Create-mode)The origin of builder modeSuppose you create a house facility in the game, the building is made up of several parts, and the parts are richly varied.If you use the most intuitive design method, the changes in each part of the House will lead to the re-revision of the building.Motive (motivation)In the software system, sometimes faced with the creation of "a complex object",

Factory Methord Factory method Mode (creation mode)Starting from the coupling relationshipCoupling relationship directly determines the behavior of software in the face of change-The tight coupling between the module and the module allows the software to change in response to changes in the relevant modules.-Loose coupling between modules and modules allows the software to be replaced or changed in the face

Simple Factory mode, abstract Factory mode, factory method mode, these three kinds of factory models are in the design mode of the creation mode, they are somewhat similar in form and characteristics, the ultimate goal is to help us to the object of the instantiation part of

The factory mode is suitable for the creation of a large number of objects, and these objects have the same interface, you can use the factory mode to create.Simple factory modeThere are three simple factory models: common factory models, multiple method factory models, and static method factory models.--------------------------------------------------------------------------------Take sending QQ messages o

Parallel programming mode-Master-Worker mode and masterworker Mode Introduction The Master-Worker mode is a commonly used parallel design mode. Its core idea is that the system has two process protocols: Master process and Worker process. The Master process is responsible

OverviewIn object-oriented software design, we often encounter a class of collection objects, the internal structure of such a collection object may have a variety of implementations, but it comes down to two points that we need to care about: one is the data storage structure inside the collection, and the second is to traverse the data inside the collection. One of the principles of object-oriented design is the single responsibility principle of a class, so we need to break down these respons

Design Mode learning notes-Observer mode (transfer), design mode learning notes Http://www.cnblogs.com/wangjq/archive/2012/07/12/2587966.html 1. Overview It is sometimes called the publish/subscribe mode. The observer mode defines a one-to-many dependency, allowing multiple

Detailed description of the factory mode of the PHP design mode, and detailed description of the php design mode When developing large systems, the following situations often occur: I have A part of the basic data. The class classA is read from database A, and many other functions are operated based on this basic data. Now, I want to change the data from database

Single-Case mode1. A Hungry man mode: Create an instance when the class is loaded (thread-safe)2. Lazy mode: Create an instance (thread unsafe) solution when the method is run: double-checkA Hungry man mode: Public classSingleton {//a hungry man mode//privatize a constructor PrivateSingleton () {}//instantiating an

Install Apache, MySQL, and PHP first, sequentially.1.apache, MySQL installation is relatively simple, skip2. PHP installation, I installed the php5.3.6 built-in php-fpm, so there is no need to separate under the patch../CONFIGURE–PREFIX=/USR/LOCAL/PHP5/--with-mysql=/usr/local/mysql/--enable-fpm--with-apxs2=/usr/local/apache/bin/apxsAttention:--enable-fastcgi--enable-force-cgi-redirectThese 2 new versions of PHP are already built-in, so if you add these 2 parameters, make will indicate that the 2

Flyweight definition: Avoid the overhead of a large number of small classes with the same content (such as memory consumption), so that you can share a class (meta Class). Why use shared mode/enjoy meta mode The principle of object-oriented language is that everything is an object, but if the real use, sometimes the number of objects may appear very large, such as word processing software, if each text as

Policy mode: defines the algorithm family, which is encapsulated separately so that they can replace each other. This mode allows algorithm changes to be independent of algorithm customers.Simple Factory: completely independent object creation, so that object creation is irrelevant to specific users. A simple factory is not strictly a design pattern, but a good programming habit. Glossary: The Factory mode

Java design mode-singleton mode and java Design Mode View Singleton mode with questions 1. What is Singleton mode? 2. What is the use of Singleton mode? 3. How to Implement the singleton m