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) cache trigger expires;6.4 Single Sign-on (distributed session)The system is divided into several subsystems, and after being deployed independently, it will inevitably encounter the problem of Session management. Can use session synchronization, Cookies, distributed session mode. E-commerce websites generally use distributed session implementation.Further, we can build a perfect single sign-on or account management system according to the distributed session.Process description(1) When the use

Samba hosts. Let's take a look at how to use it under metasploitable 2 .Usage:./enum4linux.pl [Options]ip-UGet userlist Get a list of users-MGet machine list* get list of machines-Sget sharelist get share list -P get Password Policy information Get Password Policy information -G get group and member list get group membership information -D be Detailed, applies to-u and-s more detailed information, combined with-u and-s use -u user specify username to

according to fixed offset addressing and tell loader how to load PE files. From a macro perspective, the rough section of a PE file. It can be said that, as previously described, loader only treats this as data, reads it, And then compares it with its own loading rules.The following describes several important parts of PE:2. Import tableExe uses external DLL to provide functions. During loading, loader needs to allocate the address of each function.

The ORACLE tutorial is: Oracle SQL Performance Optimization Series 2. 4. Select the most efficient table name sequence (only valid in the rule-based Optimizer) The ORACLE parser processes the table names in the FROM clause in the order FROM right to left. Therefore, the table written in the FROM clause (basic table driving table) will be processed first. when the FROM clause contains multiple tables, You m

the file by Hpjmeter and then use the intuitive GUI interface to easily analyze GC data.Figure 4:hpjmeterThe following chapter describesThis chapter, as a foreshadowing of GC tuning, focuses on how to monitor GC information. In general, I would recommend using Jstat to observe GC operations, and then analyze GC data by -VERBOSEGC when a more time-consuming GC is found. The general process of GC tuning, therefore, is to analyze and compare the changes in -VERBOSEGC output results after using dif

In the previous Article Hibernate Learning series-----(1) Development environment building, roughly summed up hibernate development environment of the building steps, today, we continue to learn about hibernate knowledge, first talk about the main content of this article: Configuration class Sessionfactory interface Session interface Transaction interface Query and Criteria Interface The following categories are described

Static resources are called static resources. Cache these static resources to the client to reduce the number of requests when the user browses the web page again, thus accelerating the loading and rendering of the web page. Similarly, to set static resource cache to the client, we need to add an intermediate layer to process static resource requests. The following uses an image as an example. (This method is used only when the image is very large. If the image is k-

Overview The Silverlight 2 Beta 1 release, both from runtime and tools, has brought us a lot of surprises, such as support for framework language visual Basic, Visual C #, IronRuby, IronPython, for JSON, WEB A new set of features such as Service, WCF, and sockets support. The "Step by Step Silverlight 2 Series" article takes you fast into Silverlight

Java series notes --- Regular Expressions (2), java Regular Expressions Regular Expression To be honest, regular expressions are really hard to write. When I began to prepare for data collection, I found that more and more information is being collected. The premise of my article is that the article should be clear, After clarifying my own ideas, I wrote positive expressions in a simple and difficult way. I

Dynamic Planning Learning Series-divide DP (2) and Plan dp The second question of Partitioned DP, wikioi 1039, is different from the biggest idea of the product of the first question. Question requirements: Divide a number into several parts and ask the total number of methods.Truth-solving ideas:In fact, it is a bit like some of the questions of Primary School Olympics. Let's look at an example:7 is divid

Where mgr = E. EMPNO)And sal> 50000And job = 'manager ';6. Avoid '*' in the SELECT clause '*'When you want to list all columns in the SELECT clause, using dynamic SQL COLUMN reference '*' is a convenient method. unfortunately, this is a very inefficient method. in fact, ORACLE converts '*' into all column names in sequence during parsing. This task is done by querying the data dictionary, which means it takes more time.7. Reduce the number of database accessesWhen each SQL statement is executed

multiple layers of controls, and the top layer is page, the following controls have leaf branches, and leaf controls do not include sub-controls. Branches are controls that include sub-controls. A method to generate sub-controls is called for each layer of controls, the parent Control calls the generation method of the Child control, and the Child calls Sun's. This recursion ensures that all valid (visible = true) controls on the page are generated, (For details about the design mode, refer to

Overview The release of Silverlight 2 Beta 1 brings us a lot of surprises from Runtime and Tools, such as supporting the framework languages Visual Basic, Visual C #, IronRuby, Ironpython, A series of new features such as JSON, Web Service, WCF, and Sockets support. The article "one-step learning Silverlight 2 series"

Introduction Essentially, WCF is a communication service framework that allows us to use different transmission protocols and different message encoding formats to interact with different WS-* series standards, all these details are handled by the channel stack. In the WCF topic series (8): Deep Channel Programming Model Part 1-design, I have a deep understanding of the channel model in WCF. In this article

between B and B.2. What is the download speed of 2 Mbps? First:2 m/s = (2*(10 ^ 6)/8 B/S = 250000 B/S Explanation: we need to convert the 2 Mbit/s network speed to the download speed. 2 Mbit/s =

Centos performance monitoring series 2: initial solution of CollectlFor a Linux system administrator, it is the primary responsibility to ensure that the system managed by the Administrator is in a good state.Linux administrators can find many tools to help them monitor and display processes in the system, such as top and htop.Today, we will introduce collectl, a tool that is easy to use;Introduction:Collec

In a preliminary study on Web Services: Learning Web services using demo series (1) -- writing in preschool, this article describes the development environment required before developing Web Services, one thing I want to add here is not only the necessary conditions described in "Web Service Introduction: Learning Web Service series with demo (1) -- writing in preschool, you must also install IIS to deploy

[Oracle entry series] Chapter 2 _ Functions -- v512 studio Editor: Xuan Yu Function Nvl () function Count () function Case expression My blog Date type Nvl2 () function Dedode () function Having clause V512 Studio Grouping functions and null values Nullif () function Coalesce () function Group by clause Chinese Emy of Sciences Main O

Linux mobile phone DIY. Shell application extension 2. automatically generate a playlist (e680 Series) Papayas 2007-03-20 I. Origin of the problem Many people ask what is the best player for e680. I just want to say that it is still a built-in RealPlayer.His advantage lies in the resources used, the seamless connection with mobile phones, and the appropriate media-related parameter settings.RealPlayer provi

Learning the learning notes series of OpenCV (2) source code compilation and sample projects, opencv learning notesDownload and install CMake3.0.1 To compile the source code of OpenCV2.4.9 by yourself, you must first download the compilation tool. CMake is the most widely used compilation tool. The following is an introduction to CMake: CMake is a cross-platform installation (Compilation) tool. You can use