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Spool's developer blog describes how Spool uses bitmaps related operations of Redis to collect statistics on active website users. Original article: http://blog.getspool.com/2011/11/29/fast-easy-realtime-metrics-using-redis-bitmaps/ Redis supports binary bit-based placement for String-type values. You can use a value to record information of all active users by setting the bits corresponding to a user's id
From: http://www.phpweblog.net/killjin/archive/2008/01/06/2653.html Directory Opening RemarksBasicActive FTPExample of active FTPPassive FTPExample of Passive FTPSummaryReferences Opening RemarksOne of the most common challenges when dealing with Firewall and other network connection problems is the difference between active FTP and Passive FTP and how to perfectly support them. Fortunately, this article
the abstract summary, we write some complex code, there will be some similar ideas, two and this idea, is not the design mode? We're going to think about what kind of feature to use in order to get more people to understand our intentions, to understand how I designed this system to write this piece of code. Read the design pattern you'll find that when you look at a system written by someone else, you can see at a glance what the directionality of reading the system code is. Say so much, as if
This chapter continues to complement the concept of Active Directory replication, as follows:Connection object:A Connection object is an Active Directory object that represents a replication connection from the source domain controller to the destination domain controller. A domain controller is a member of a single site and is represented by a server object in Active
Introduction to the Snake Model Based on the Active Contour Model of image segmentation (5) Zouxy09@qq.com Http://blog.csdn.net/zouxy09 In "image segmentation (I) Overview", we have briefly understood the mainstream image segmentation methods. Next we will mainly learn the energy functional-based segmentation method. Here we will learn the simple knowledge of the Snake Model, LevelThe Set (Level Set) model will be discussed in the following blog. En
Programmable Active Filter Circuit Based on Single Chip Microcomputer Control [Date:] Source: foreign electronic components Author: Zhao shiqiang, Zhou yijian, Liu Xia [Font:Large Medium Small] 1 IntroductionActive Filter is widely used in digital signal processing, communication, and automatic control, but it is difficult to design a variable wide band active filter. The dual-Second-
A Brief Introduction to the Snake Model Based on the Active Contour Model of image cutting (5) [Email protected] Http://blog.csdn.net/zouxy09 In "image cutting (I) Overview", we have briefly understood the mainstream image cutting methods. Below we will mainly learn the energy functional-based cutting method. Here we will learn a simple knowledge of the Snake model. The level set model will be described in the following blog post. Energy Functional-
Active Directory operations master (FSMO)Wu YuzhangIn front of the blog and we talked a lot about the topic of the Active Directory, I believe you have a more profound understanding of the Active Directory Domain Services, today we continue to lead you to more in-depth understanding of the Active Directory Domain Servi
Image Cutting (v) A brief introduction to the snake model of active contour model[Email protected]Http://blog.csdn.net/zouxy09in the " Overview of Image Cutting (i.) "We have a simple understanding of the current mainstream image cutting methods." Below we mainly study the cutting method based on energy functional. Here we learn the simple knowledge of the Snake model, and the level set model will be mentioned in the post. A cutting method based on en
Windows 2003 Active Diretory (eight)--Group Policy (2) Windows 2003 Active Diretory (eight)--Group Policy (1) Windows 2003 Active Diretory (vii)--organizational unit and delegated control Windows 2003 Active Diretory (vi)--folder permissions and sharing (2) Windows 2003 Active
Directory Opening Remarks Basic Active FTP Example of active FTP Passive FTP Example of Passive FTP Summary References Appendix 1: Configure common FTP servers Opening RemarksOne of the most common challenges when dealing with Firewall and other network connection problems is the difference between active FTP and Passive FTP and how to perfectly supp
Skills Active subtitles, also known as scrolling kanban, scrolling subtitles. The use of active subtitles makes the entire Web page more dynamic, it appears very angry. More and more active subtitles are being used to enhance the interactivity of Web pages. You can use JavaScript programming to achieve the active capti
1. Policy-based Management Directory services for active directories include data storage and logical hierarchies. The logical structure provides a context hierarchy for policy applications. The directory stores a policy (called Group Policy) that is assigned to a specific context. Group Policy expresses a set of business rules that contain settings that apply to contexts, which determine access to directory objects and domain resources, which domain
When you create a printer in Windows 2000/2003, the printer and Active Directory are configured to be holistic by default, and the printer is automatically published on the Active Directory. For printers that are not running Windows 2000/2003 computers (such as Windows NT 4.0), they cannot be automatically published in AD, either by using the Active Directory Man
Crystal oscillator from the material can be divided into quartz crystal oscillator and ceramic crystal two categories, and from the properties of crystal oscillator can be divided into passive crystal and active crystal oscillator. Quartz crystal and ceramic crystal vibration from the appearance of very advantageous to distinguish, after all, is also two completely different materials. and the passive crystal and
From http://bbs.huochepiao.com/html/29/121552.htm How does entering passive mode appear during FTP connection? One of the most common challenges when dealing with Firewall and other network connection problems is the difference between active FTP and Passive FTP and how to perfectly support them. Fortunately, this article helps you clear some confusion about how FTP is supported in the firewall environment. This article may not be an authoritative exp
In the "Image segmentation (a) Overview" We have a simple understanding of the current mainstream image segmentation methods. Below we mainly study based on the energy functional partition method. Here we learn the simple knowledge of the snake model, and the level set model will be mentioned in the post.A segmentation method based on energy functional function:The method mainly refers to the active contour model (
Reproduced in: http://www.cnblogs.com/TianFang/archive/2006/12/11/589168.htmlThe active object pattern is used to reduce the coupling between method execution and method invocation. This model describes another more transparent method of inter-mission communication.Traditionally, all objects are passive code snippets, and the code in the object is executed in the thread that issued the method call to it, and when the method is called, the calling thre
Article Description: active consumption and passive consumption. The following is what I think in the last six months, because the reasons for work can only stay in the "Tao" level, there is no specific practice and practical cases, the content is more "virtual." If you would like to see concrete operational aspects of the content, please stop. 1. Noun The so-called "active consumption", the sp
Introduction: Active object is a typical design pattern in concurrent programming practice, and the core of active object mode is to improve the concurrency of programs by solving the invocation and execution of the coupling method. This paper begins with the typical active object design pattern and explores the application of the
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