Keepalived high-availability cluster practices and keepalived cluster practices
(1) Prepare the hardware environment in practice
Prepare four physical servers or four vmvms, two of which are used for Keepalived servers and two for web testing sites.
HOSTNAME
I P
Release
Lb01
10.0.0.7
Keepalived master server (Nginx master Load balancer)
Lb02
10.0.0.
Mobile Web development practices and web development practices
The rapid development of mobile devices has brought great convenience to users. Users can easily access the Internet using Android, iPhone, and other mobile devices. Mobile devices have high requirements on the Performance of Web pages. The following describes some experiences of Mobile Web development.Viewport
When you use an iPhone to access a
Practices on Codility (15) and practices on codility (15)
(1) NumberSolitaire
A game starts with N grids in a row, with the number 0 .. n-1. At first, the pawn piece is in A [0], and each lattice has an integer (which may be positive or negative ). You are in the grid I, you throw the dice and get the points X = [1 .. 6], and then go to the grid I + X. If the grid does not exist, roll the dice again until t
JQuery practices: Get to know jQuery practices
In this chapter, we can learn the following knowledge:
① Why should jQuery be used?② Basic principles and concepts of jQuery③ How to use jQuery?
Why jQuery?
Once using JavaScript to add dynamic functions to the page, you will find that all follow this mode: select an element or a group of elements, then, you can bind events and add effects to it, such as displ
Best fit practices and best fit practices
RetrofitIt is a RESTful Android (Java) client implementation. Based on annotations, it provides JSON to POJO (Plain Ordinary Java Object, simple Java Object), POJO to JSON, and network request (POST, GET, PUT, DELETE, and so on) Encapsulation encapsulates many details of Network calls. in the development process, we focus on object calls and do not care about the de
Unity3D game development practices original video Lecture Series 12 U3D new 2D development methods practices, unity3du3d U3D's new 2D development method (New Method and Application of 2D game development for airplane hitting in Unity3d-4.x)
Outline: Without NGUI and TK2d plug-ins, U3D provides the most powerful built-in tools.
The development process is designed as follows:
Extract the genie from the im
With the help of node practices for cross-origin instances of JSONP, node practices for jsonp
I. Preface:
Browser security is based on the same-source policy. The so-called same-source policy is three-phase same:
1. The protocol is the same;
2. The domain name is the same;
3. the ports are the same.
However, there are advantages and disadvantages in everything. The same-origin policy also leads us to want t
Android IM practices and androidim practices
IM (Instant Messaging) is widely used in Android. QQ, Wechat, Momo and other applications can be seen as IM real-time communication apps. Real-time communication is widely used in social apps, and its functions seem cool. Today, we will look at how the android IM software is implemented. Communication software such as IM, unless the company has great strength an
PHP + MYSQL implements simple read/write splitting practices, and phpmysql read/write practices
1. Introduction
I have written two articles:
Principle of Mysql master-slave Synchronization
MySQL master-slave synchronization practice
Based on this, we can implement simple PHP + Mysql read/write separation to improve the load capacity of the database.
2. Code practice
The above is all the content of this art
Abnormal organizationsAny organization has many projects, from traditional waterfalls to other things that seem to be iterative.In my experience, most companies are reluctant to become (or not) elegant masters. They always want to use a whole set of methods and try to implement it across departments and branches, even within the company. This requires a huge training process and a Project Management Office (the person in this office is responsible for developing the practice process based on a c
$compile, in angular, the "compile" service, which involves the "compile" and "link" phases of the angular application, based on the angular root node (Ng-app) and the constructed \ $rootScope object from the DOM tree. The descendants of the root node are parsed in sequence, the instructions are searched according to a variety of conditions, and the related opera
Implementation example of converting jquery function into angular command, jqueryangular
The first thing you want to achieve is: show the following stars
The initial implementation method was to add JS scripts to html pages, but foreigners do not like this. We must convert them into angular commands, so try again ~
I. Initial Implementation Method
Ii. Change to ang
(Attr_name, Val) {
this.attributes[attr_name] = val ;
Binder.trigger (UID + ": Change", [Attr_name, Val, this]);
},
get:function (attr_name) {return
this.attr ibutes[attr_name];
},
_binder:binder
};
Subscribe to the PubSub
Binder.on (uid + ": Change", Function (evt, attr_name, New_val, initiator) {
if (INI Tiator!== user) {
user.set (attr_name, new_val);
}
});
return user;
}
Now if we want to bind the user model properties to the UI, we
At first it was like the following: A small star shown belowThe initial implementation is to add JS script in the HTML page, but foreigners do not like this, we must turn to angular instructions, so try to Bai ~First, the original way of realizationSecond, change to angular instruction form (using REQUIREJS)Description: I use the third-party plugin jquery.raty.min.js (scoring plugin) here, it is to rely on
This article mainly introduces what angular thinks after its first understanding of the angular framework, and summarizes some personal problems after its understanding of angular. If you need it, you can refer to the actual development needs at work, to get started with the angular framework. From the time when ijuju.
', }),}, {test:/\.png$/, use: {loader: ' file-loader ', option S: {name: '. /img/[name]. [Ext] '}}]}, plugins: [New Webpack.optimize.OccurrenceOrderPlugin (), New Webpack. Contextreplacementplugin (//This is the plugin that NG needs to avoid error//the (\\|\/) piece accounts for path separators in *nix and Win Dows/angular (\\|\/) Core (\\|\/) (ESM (\\|\/) src|src) (\\|\/) linker/, Root ('./src '),//Location of your src {}//a map of your rout
Integration of Require. js and Angular. jsRequire. js
For details, see:First knowledge of Require. jsDecrypt Require. jsAngular. js
For details, see:Angular. js: Love and hateIntegrate Require. js and Angular. js configurations
Configure angular. js in Requirejs.Require-main.js
// Configure requirejs. config ({... paths: {'jquery ': 'libs/jquery-2.1.3/jquery. min
This article details: How to implement the two-way binding of variables on $scope objects by dirty checking at 1.angular. 2. Three important ways to achieve angular two-way binding: $digest (), $apply (), $watch ().Angular unlike Ember.js, which implements two-way binding by dynamically setting setter functions and Getter functions, dirty checks allow
Angular is looking for a large road, so it is very large, 1.6-17 thousand rows; aveon is designed to provide a front-end development experience away from Dom operations, 0.6.3 only 2420 rows, Min only 29kb.Avron has copied many good things from angular, such as the {} interpolation expression, MS-model (bidirectional synchronization through events), and MS-controller (specifying scope range for viermodel ),
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