HTTP protocol is the basic protocol of the internet, but also the necessary knowledge of Web development, the latest version of HTTP/2 is to let it become a technical hotspot.This paper introduces the historical evolution and design ideas of HTTP Protocol.first, http/0.9HTTP is an Application-layer protocol based on the TCP/IP Protocol. It does not involve packet (packet) transmission, mainly specifies the
If you are reading this article, check out the first two chapters of this series for permission operation issues!Http://www.cnblogs.com/CQ-LQJ/p/5609690.html and Http://www.cnblogs.com/CQ-LQJ/p/5604331.htmlNow get to the point, this article is about the own rights management system design ideas, self-owned Rights management system is to abandon the background management interface Django, based on their own
Arithmetic 2 design ideas;(1) First, using the switch statement, let the user select the number of operations to be performed in the range, and then the individual case statements to invoke the corresponding random function to generate a number ();(2) As to the number of topics to be used to define the macro, let the user input the number of the calculation of the problem;(3) The resulting random number def
:
$ (' A:first ')//Select First a element in Web page$ (' tr:odd ')//select odd rows of the table$ (' #myForm: Input ')//Select INPUT element from form$ (' div:visible ')//select the visible div element$ (' Div:gt (2) ')//Select all DIV elements except the first three$ (' div:animated ')//Select a DIV element that is currently in the animated state
Second, change the result setThe second of jquery design
Web Application Design
A clear processApplication design is to provide a smooth life cycle of products, design a good product state machine.
Resource ConnectivityAdd links to related resources where appropriate and provide more information. But this is secondary and cannot be distracting.
Web page interaction extension Point
To boot the correct op
order is credited, the channel service side asynchronously notifies the TYPESDK server
The TYPESDK service side inquires the order information according to the internal order number
Type server notification Game Service side issue
After the game server receives the shipment request, it first saves the request, immediately returns to the TYPESDK service side, indicating that the shipment request has been received.
TYPESDK return to channel service side
The game server asynchr
Since the publication of "subvert traditional-object-oriented design ideas (collation)", many of my friends and comments have been posted, either good or bad. Of course, there are also many friends in
Article In the comments, I posted my own opinions. Here I will explain some typical comments.
From wanghualiangComment
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.Co
, because the bottle port cannot be directly connected to the humidifier, so you have to convert it once. The connector is a new type. The adapter mode is used to connect the bottle with the humidifier .... By the way, in fact, the design model is not something too profound and mysterious. It can be said to be an accumulation of experience, and we may intentionally or unintentionally use it, it is mainly for the purpose of making code easy to maintain
The current software development process is as follows:
Requirement Analysis-> outline design-> Framework Design-> module design-> class design-> coding-> MaintenanceNew ideas:
User Feature Analysis (similar functions have different value points for different users)
-> So
TYPESDK one of the design ideas and architectures of the service end: Application Scenario AnalysisAs a Channel SDK Unified access framework, TYPESDK from the beginning, the face of the demand scenario is a variety of games, through a unified SDK server, can simultaneously access dozens of or even hundreds of different channels of the SDK. and the specific access fields and access logic for these channel in
Due to work needs, I spent nearly two months to understand the MSN Protocol, through a long time packet capture and try to implement, I will summarize some of the design ideas of the MSN server side as follows.
As a server design, several important issues are: (I hope you can correct them)
1. Security
2. Concurrent service capability
3. Linear Performance Improv
many properties, but do not use the idea of designing a database to design class diagrams. Class diagrams are only used to reflect the reality that when designing a class diagram, you can think of the data as stored in a DB or stored in XML or stored in a file, not to consider storage.
Object graph, not too much to use
Sequence diagrams, which describe the order of interactions between objects, focus on the chronological order of message pass
-node connection pool in beetle to handle this situation.
When a node socket encounters a network exception, it can be determined that there is a problem with the cited node. During the round robin process, the pool determines whether to discard node Round Robin Based on the node status. you can check the node after the specified interval for the node recovery pool. If the node can be connected normally, the node is restored.
The above are general design
PrefaceRecently, I was working on a project. I talked about it from the customer, requirement analysis, system design, coding, and all-inclusive. The first time I did this,Depressed, it's not a few days before the delivery, and there are still some unclear ideas, so I will post my thoughts and let you bloger make bricks
RequirementHere we only write out the relevant part, that is, the user processing part.
based on scanning each message index file, determine whether the last message index in the file Messageoffset is smaller than the smallest messageoffset, if small, This indicates that the message index file is meaningless and can be deleted;
Logic at broker startup
Scan all the messages on the disk to store the files and establish a memory map for each file;
Scans all the queues (message indexes) on the disk for storing files, establishing a memory map for each file;
For e
sharding, we cannot directly search for tables, because you cannot search for dozens or hundreds of tables that may already exist in the system, therefore, search must be performed by using third-party components. For example, Lucene and Sphinx are good choices for intra-site search engines.
2.
Table file ProblemsWe know that MySQL MyISAM engine generates three files for each table, namely, *. frm, *. MYD, and *. myi. Table shards are used to store table structures, table data, and table indexe
, databases have always been an important bottleneck and must be broken through. This article describes two table sharding methods, hoping to inspire many people. Of course, the code and ideas in this article have not been tested by any code, so it cannot be ensured that the design is completely accurate and practical. The readers must carefully analyze and implement the
Labels: OS file Linux server application design window installation
C/s testing, installation/uninstallation is one of the most important parts of testing.
Design Ideas for installation and uninstallation cases (UI and ease of use)
1. installation path:
1. installation in the default path
2. Custom installation path:
A) Browse and select a custom path
lot of details, we will discuss in detail in later chapters.The design idea of CinderCinder continues the design ideas of Nova and other components.API front-end servicesCinder-api as a unique window to the cinder component, exposing clients to the functionality that cinder can provide, when the customer needs to perform volume-related actions and can only send
Layer-3 switches are quite common, so I have studied the basic principles and design ideas of the layer-3 switches. I will share them with you here, hoping they will be useful to you. Based on the introduction of the three-layer switch technology and the working principle of the three-layer switch, the design of a three-layer switch is given. According to the
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