letterhead design ideas

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

installation directory2) Create a Tomcat instance: Copy config, logs, tmp, WebApps, work directory, and then modify the port in the Config/server.xml.3) To create another instance, just repeat step 2).Example:1) Unzip the apache-tomcat-6.0.41,2) Install the Tomcat instance: Create the instance directory apache-tomcat-6.0.41-instances, and create the ins1, Inst2 directory in the directory that is used as a directory for two instances. Copy conf, logs, temp, WebApps, work to ins1, Ins2 directory.

Arithmetic 2 design ideas1, the topic avoids repetition;You can set the two number and the operation symbol to three variables, so that 3 variables in all topics cannot be exactly the same. If it is exactly the same, re-question the quiz. 2, can be customized (quantity / printing method);Directly set the number of inputs, printing method can be associated with the printer after the user to choose the way to print.3, you can control the following param

Arithmetic 2 design ideas1 Topics Avoid duplication : Create two arrays,rand () function to determine random numbers, add these two numbers to two arrays, repeat to determine random numbers, Determine if the two numbers are the same as the values of the two arrays to avoid duplication, and output the problem without repetition. 2 Customizable (Qty / print ): quantity and printing use the macro definition to determine how many rows and columns are outp

I will give you a detailed analysis of the photoshop software and share with you the tutorials on the design of the Taobao drill chart.Tutorial sharing:All right, the above information is all the details of the Taobao drill diagram design ideas and tutorials provided to users of this software of photoshop, you can see the software users here. I believe that you a

GEFStudy Notes (2) SimulationGEFDesign Concept, anatomyGEF 1 GEFLike otherFrameworkSimilarly, it is a complex and huge (exaggerated). When we want to use it, we must fully understand its overall architecture and its operation process. This requires our perseverance and acumen. Journey started.... GEFThe main task is2dGraphic editing operations, such. to make GEF can be widely used in a wide variety of 2D graphic editing field, GEF / easy combination / reusab

100 creative ideas suitable for Industrial Design 1. Turn it upside down2. Flat it3. Narrow it down4. Change the color.5. Change it to a circle.6. Make it bigger7. Change it to a square8. make it smaller9. Make it longer10. Flash it11. make it shorter12. Make it fluorescent13. Put it in text14. Make it heavy15. Make it a light year16. Make it a balanced17. split it18. Repeat it19. Turn it into a three-dime

The design goal of the DWZ rich client framework is simple and practical, convenient and flexible, fast development, RIA ideas, lightweight Design Concept When the page is opened for the first time, the interface is loaded to the client, and the interaction with the server is only data interaction, without occupying the network traffic related to the interface. S

The concept of dashboard has existed for many years. However, the connotation of this concept has undergone great changes over the years. The earliest manufacturers sought the toy interface of the beautiful dashboard. By this year, the clear and pragmatic viewpoint promoted by the research field prevails, and dashboard has already come into the mainstream Bi applications, it has also become an important tool for reporting. Steve few summarized a series of issues to consider when designing a dash

Extend the life cycle of the player and the game I know the most from the game design, in addition to the game itself, the mechanism of the game concept of the value of other products and its derivative properties of the impact. In essence, the game is to provide virtual services, and this layer of services from the user to get the experience of the beginning of the entry into force, not only for a beautiful data retention, but also in the time to re

Learning Addresshttp://www.jtthink.com/course/play/352Main Table: Prop_mainDo not say more carefully, normal business will be involved and considered relatively comprehensive. Characters commonly used segment "Product ID" "Product name" "Product Profile" "Product category" "Add Time" "hits/Likes/purchases/bad reviews"The point is that "clicks/likes/purchases/Bad reviews" are updated regularly. But for speed and efficiency when reading, it is very scientific to put it in the commodity table as a

Two months ago, at the invitation of the editor of the silver bullet magazine, he wrote an article on "process" and "microkernel, the title is "microkernel process engine design ideas and architecture ". Now the seventh issue of panyuan magazine has been published, and the full text is now transferred to my blog. The original address of the silver bullet: http://gocom.primeton.com/modules/gSpace/modules/tec

We must be, do the application market, or other downloads, want to listen to the progress of any place, and very good implementation.It is easy to share a situation here, and prevent memory overflow. We use a weak reference to bind the view to update the progress method.mapPrevent memory from being recycled when it is not enough.Key isValue progress barAdd a progress bar reference.Public synchronized void Addviewtocache (String path, view view) {if (Viewlistem = = null) {Return}weakreferenceView

; - Head> Wu - Body> About DivID= "Div1">DivDiv> $ - Body> - HTML>Some small details of the method's function:1. The parentheses in jquery are particularly important;2, the occurrence of "=" assignment is relatively small, many are through the transfer of parameters to achieve;The so-called chain operation: that is, you can omit the original assignment in the Code of the form, instead of using the "." To connect. Beginners are not recommended;Alert ($ (' Li '). html ()); When a set of element

onStartCommand (Intent intent, int flags, int startId ){String action = intent. getAction ();If (action! = Null){If (action. equals (ACTION_PLAY_PAUSE )){If (isPlaying ()){Pause ();} Else {Start ();}} Else if (action. equals (ACTION_PAUSE )){If (isPlaying ()){Pause ();}} Else if (action. equals (ACTION_PREVIOUS )){If (isPlaying () | isPausing ()){PlayPrev ();}} Else if (action. equals (ACTION_NEXT )){If (isPlaying () | isPausing ()){PlayNext ();}}}Return START_NOT_STICKY; // Means we started th