microservice architecture principles

KVM architecture and principles 1. KVM Architecture The basic structure of kvm consists of two parts: The kvm driver is now a linux kernel module. It is mainly responsible for creating virtual machines, allocating virtual memory, reading and writing VCPU registers, and running VCPU. Another component is Qemu, which is used to simulate the user space components of

Load Balancer server, and there are several basic technologies for load balancing. HTTP Redirection load Balancing, DNS domain name resolution load balancing, reverse proxy load Balancing, IP load Balancing, data link layer load balancing.Unlike the scalability design of the application server cluster, the scalability of the distributed cache cluster cannot be achieved by using a simple load balancing method, because the cached access requests are not processed in any one of the cache servers d

Architecture and basic principles of Android dynamic loading framework DL For more information, see [Mr. Simple blog ].I am participating in the blog star. Click here to vote for me. Thank you ~ Preface In the past one or two years, the number of plug-ins used by Android apps has become larger and larger. In fact, it is caused by rapid expansion of business, increasing demand, and application bloated. Altho

data is not lost, the site service normal operation, so a certain degree of server redundancy operation, data redundancy backup is Necessary.8: AutomationAt present, large-scale web site automation is mainly embodied in the release operations, as far as possible to reduce human intervention can effectively reduce the emergence of the issue of longevity9: SecurityInformation security has always been a large web site to ensure the normal operation, the current accumulation of security models are:

Appium is implemented on the basis of a test framework that comes with the mobile operating system, and the tools used on Android and iOS systems are: Android (Version >4.2): uiautomator,android4.2 After the system comes with the UI Automation Test tool. The Ios:uiautomation,ios system comes with a UI Automation test tool. The architecture principle of appium is composed of two parts: client and server, and the client communicates with the

an IPSec session tunnel to the intranet DNS server and domain controller, the DirectAccess client and server use computer certificates for mutual authentication.6) When the user logs on, the DirectAccess client establishes a second IPSec tunnel to access the intranet resources. DirectAccess clients and servers use a combination of computer and user credentials to authenticate each other.7) The DirectAccess server forwards traffic between the DA client and the authorized internal resources.The D

module, while the module root node script holds a reference to the root node of the larger module to which it belongs. That's enough (enough for each node to want to access who accesses the entire hierarchy), and not to save references to other nodes in the script, which can lead to confusion and easy reference loss.4,prefab Unlimited can apply principle:If you make a module into a prefab, the prefab may be added to the same scene and even added to multiple scenes. Set all of these examples as

Architecture diagram: Replication principlesMysql Replication is an asynchronous Replication process, from a MySQL node (called the Master node) to another MySQL node (called the Slave ). The entire replication process between the Master and Slave is mainly completed by three threads. Two threads (SQL thread and I/O thread) are on the Slave side, another thread (I/O thread) is on the Master side.Www.2cto.comTo implement MySQL Replication, you must fir

= serverSocket. accept (); // Construct a data input stream to receive data DataInputStream in = new DataInputStream (soc. getInputStream ()); // Construct a data output stream to send data DataOutputStream out = new DataOutputStream (soc. getOutputStream ()); // Disconnect Soc. close () Client Process // Create a client Socket Socket soc = new Socket (serverHost, port ); // Construct a data input stream to receive data DataInputStream in = new DataInputStream (soc. ge

/projects/structuremap/files/Ninject:http://ninject.org/downloadUsing the existing broad application framework above, spring.net originates from Java's Spring, is more complete and powerful, AUTOFAC and Ninject are more clear and friendly, personal recommendation use autofac+ other framework combination.4, interface Isolation principleRequirements: Use a dedicated small interface as much as possible, rather than the total interface, to avoid complex interfaces.5, the Richter replacement principl

I. Preface-How the backend handles a index.php dynamic request.Many companies use LNMP environment as the basic software environment, with PHP can do rapid development. Below is a brief description of how the backend handles a request from a browser-initiated http://www.abcdxxx.com/index.php.Browser->nginx through the HTTP protocol, Nginx receives the browser sends the dynamic request.Browser->nginx->phpcgi,nginx the received request, through the CGI protocol, sent to the PHP-FPM process to do t

) % numReduceTasks ;} TotalOrderPartitioner provides a range-based sharding method, which is usually used in full data sorting and merge sorting. In the Map stage, each MapTask performs partial sorting. In the Reduce stage, a ReduceTask is started to perform global sorting. The job can only have one cetcetask, which leads to a bottleneck. TotalOrderPartitioner divides data into several intervals by size, and ensures that all data in the last interval is greater than the data in the previous inte

Web Web Software Architecture Principles First, the directory structure is clear, should not be too deep, complex, the path is best with relative addressSecond, the naming appropriateThird, constant variable content, interface to make the template betterFour, the common public Information unified storageFive, include files can not be embedded moreSix, the directory can not store too many content filesSeven,

Tags: cloudFusionaccess can create virtual desktops and assign to users"Domain" is the foundation of fusionaccess"Domain account" identifies the user"Computer name" identifies the virtual desktopActions that bind users to virtual desktop relationships are called associationsHDP protocol that transfers desktop content from a virtual machine to a terminal, which is highly efficient in network transmissionHDA is actually a series of desktop Connection services.Centralized management of TC with Mana

processing parts related to transaction management are well worth learning, where you can see the management of the data source- Hibernate session management, the combination of threads and so on.For more information, please follow the public number: it haha (it_haha)650) this.width=650; "style=" Width:auto;height:auto; "src=" http://mmbiz.qpic.cn/mmbiz_jpg/ Xruic8oiyw5upuvcv1cifldft9jiazjawtzuqviaytibsdh5le8ricktou2mn0iblkxzw5kgo4ntibmclfng97qyqsntq/640?wx_fmt=jpeg wxfrom=5wx_lazy=1 "alt=" 640