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what is a hot and cold page? The concept of hot and cold pages is introduced in the buddy system of the Linux kernel physical memory management. A cold page indicates that the free page is no longer in the cache (generally refers to L2 cache), and the hot page indicates that the free page is still in the cache. Hot a

Unity3d. Today, we say that Unity3d cooperate with Assetbundle and; LUA implements hot updates. First, let's look at what a hot update is! The so-called hot update refers to the system changes in a non-stop state, such as our windows can be done without restarting the update of the patch, the Web server does not restart the premise of the completion of the d

1. Introduction The so-called Hot plug (hot-pluggin) is charged Plug and unplug, hot plug function is to allow the user to not shut down the system, without cutting off the power of the insertion or dial-out device, such as: USB device (USB stick, USB mouse, etc.) SD card device. This seemingly simple operation on the user, at the system level has a complex proc

Today, I found a note in an elephant note that was previously placed on the Ijavaboy, and is now inaccessible. A few days ago another colleague was discussing the problem. Here to share.In the process of Web application development or game server development, we are always using hot deployment. The purpose of the thermal deployment is simple to save time for application development and release. For example, we often turn on the

The problem is important for an enterprise-critical application system to ensure that the system is able to provide services consistently and reliably, so there is a need for high availability and a high availability solution. The following issues are common for choosing high availability solutions, especially for dual-machine hot standby scenarios: Q: Has the RAID technology and data backup technology been taken, is it necessary to do dual-machine?

Label:1, dual-Machine Hot Preparation OverviewDual-machine heat with two implementation modes, one is based on shared storage devices, the other is not shared storage devices, generally referred to as pure software mode.Dual-Machine hot standby based on storage sharing is the most standard scheme for dual-machine hot standby.In this way, two (or more) servers are

Hot deployment, configuration file Usagefirst, hot loadSpring provides developers with a module called Spring-boot-devtools to enable the spring boot application to support hot deployment and increase developer productivity without having to manually restart the spring boot application.the principle of DevtoolsThe underlying principle is to use two ClassLoader, o

In recent years, Taobao, Beijing-East, when, excellence and other leading development of the consumer mall is menacing, all statistics without exception shows that the majority of female consumption groups. Many stationmaster also sees the huge potential of the female market, so the female net is springing up like a mushroom. The most important thing to retain users is the content of the website, so what is the content that users really like to focus on? What are the requirements of the main us

In the process of doing SEO, see a lot of friends are more and more inclined to long tail keyword, more and more aware of the power of the long tail keyword, I am also so, but this does not mean to do the station need to discard hot keywords. Hot keyword as the main entrance of traffic, still has very important significance. Today, I would like to talk about my experience, the four kinds of advantages of th

Webpack implements hot replacement of Node. js code and webpacknode. js Gitter asked this question over the past two days, asked on Twitter, and asked on GitHub, but did not respond in the past two days.I didn't know the contact information of the author of Webpack because the jlongster who wrote the blog ignores me.The last message sent to Gitter seemed to have been seen, and he roughly explained it again...Https://github.com/webpack/docs/issues/45#i

Hot Spare : Hot SpareWhen a disk that is in use fails, an idle, power-up, and standby disk immediately replaces the failure disk, which is a hot spare. No user data is stored on the hot spare disk and can have up to 8 disks as hot spare disks. A

The dead of the printing of large objects and the effect of hot platesSource: Http://goo.gl/088nW Much of this article is mainly about the continuation of the original author's previous "Warping fundamentals" to think. In particular, to think about the speed of printing, the size of the printed object, and the type of plastic, these are the factors that cause the object to curl. There are also some obvious and easy points to note that the use of the h

CPU hotplug Support in Linux (tm) Kernel Maintainers: CPU Hotplug Core: Rusty Russell Srivatsa Vaddagiri I386: Zwane Mwaikambo PPC64: Nathan Lynch Joel Schopp IA64/X86_64: Ashok Raj s390: Heiko Carstens Authors:ashok Raj Lots of Feedback:nathan Lynch Joel Schopp jschopp@austin.ibm.com Translation: Arethe Qin Introduction Modern advanced features on the system architecture make the processor capable of error reporting and error correction. The CPU architecture supports partitioning, w

Learning and mastering how to use NBU to back up the file system is just the beginning for a data administrator. Because for most enterprises, buy NBU is mainly to back up the data of the enterprise database, protect the data security of the database, and then ensure the safe operation of the enterprise application. As a result, database backups for Oracle, DB2, and Sybase will be rolled out from this article. Brief Introduction to Oracle Backup: Simple in the way of backup, can be divided into

Our hot update scripts are used in practice and, of course, to support commonly used third-party components, such as a very useful third-party UI library: Fairygui.What is FairyguiHere Copy the Faiygui official website introduction:Redefining the UI authoring process, full visualization, 0 code, is a UI authoring tool for programmers, designers, and game planners.With FAIRYGUI-SDK, the performance of each game engine can be efficiently rendered, and t

Today webmaster Big Big to write is Baidu hot word list. This is really a good thing, I believe that the network to promote friends, Baidu hot words and Google Hot Word rankings are not unfamiliar. Try to use hot words to promote the network of friends, I believe that countless. I am in the study of the use of Baidu

Learning Sklearn and kagggle problems, what is the single-hot code? Why use a single-hot code? Under what circumstances can I use a single-hot code? and several other ways of encoding.first, learn about feature categories in machine learning: continuous and discrete featuresTo obtain the original characteristics, each feature must be normalized, for example, the

Rev:1.0Type:direct-access ANSI SCSI Revision: GenevaHere, there are two direct-attached (direct-access) SCSI disks, a disc attached to the CD-ROM. We only consider SCSI disks, so the two disk locators in SCSI are 2:0:0:0 and 2:0:1:0. If you continue to insert a disk, then the new disk in the SCSI locator is 2:0:2:0, this value string is very important.1.1 Hot PlugAfter inserting a disk into a computer, the kernel does not generate any event notificat

ObjectiveBecause before using Myeclipes's classmates know, when using Myeclipes, Java files or JSP files will be directly loaded into the deployment of the container, so at the time of development, different often to restart the project, so as to achieve increased development efficiency.But now after switching to Springboot, because there is no external container support, and using Gradle to build the project, plus the idea that the default does not automatically compile the features, and eventu

Preface A few days have been busy online environment deployment of things, the initial thought is that Nginx (KeepAlive dual standby) +3 (Tomcat) +2redis (dual-standby), but later because the Aliyun Server Classic network does not provide virtual IP, can not use keepalive, Nginx Dual Machine Hot standby can only temporarily give up, the second step, the use of Nginx+3tomcat+2redis (dual-standby). Nginx+tomcat because of the previous configuration, so