exadata architecture

Objective:This blog is mainly for the architecture, framework and design pattern of the differences, there are three layers and the difference between the MVC discussion, for these three do not understand, please click on the wiki and Baidu encyclopedia to make up for the missed, here is not sent linkSoftware Architecture (software architecture)The

Building a model for service-oriented architecture (service-oriented architecture) using Rational Software Architect, part 1th: Case studies, tools, and business viewsThis tutorial introduces the use of IBM Rational Software Architect to establish a service-oriented architecture (service-oriented architectUre,soa) mode

: Interface high cohesion is internally highly dependent and isolated as much as possible. That is, the method of internal declaration of an interface is related to a sub-module, and is required by this submodule. Interface design is limited: If you fully follow the principle of interface separation, there will be a problem, that is, the design of the interface will be less and less, so that the number of interface increases, the complexity of the system increased suddenly, rather than the

search key Many applications access new data more frequently than old data, so we want the data to be roughly sorted by time, but also evenly distributed, so that we can keep the data we are reading and writing in memory and distribute the load evenly across the cluster. For example, there is an analysis program that allows users to access data over the past one months on a regular basis, and we want to keep the data as easy to use as possible, so we can shard on {month:1,user:1}, where mo

About MySQL ArchitectureThe MySQL server is comprised of the SQL layer and the storage engine layer. SQL layer functions include permission judgment, SQL parsing and query cache processing, and the storage engine layer is the completion of the underlying database data storage operations. Such as:650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M01/8B/D4/wKioL1haPWbDb90NAAAzcpVeDV4246.png-wh_500x0-wm_3 -wmp_4-s_3519715006.png "title=" 1.png "alt=" Wkiol1hapwbdb90naaazcpvedv4246.png-wh_50 "/

purpose of the flow queue data is to determine the data in the table where the data will be keptis insert,update and delete, and each operation generates the corresponding log information. In MySQL, if theThe storage engine that holds the transaction, the amount of this log generation is doubled. And if we go through some mature third-party queue software toThe performance of this queue data processing function will be multiplied.3. Super-Large text dataFor MySQL versions prior to 5.0.3, the VA

Introduction to the classic architecture model of the software architecture and design model Source: recommended by netizens 　　RootAccording to Linda Rising's patternAlmanac has over 70 known architecture models. This is only a lot of statistics, including many models that are generally cons

Summary of. NET Logical Layered Architecture,. net layered architecture I. Basic Knowledge preparation: 1. layer principles: (1) Each layer is called by the upper layer in interface mode.(2) The upper layer can only call the lower layer.(3) Dependency can be divided into loose interaction and strict interaction. 2. Business Logic classification: (1) application logic.(2) domain logic. 3. layer used: (1) pre

In the previous article, we talked about the evolution of the entire architecture, and this time we'll talk about where to think about design.In order to enable the site to deal with high concurrent access, massive data processing, high reliability, such as a series of problems, we can choose horizontal or vertical two direction to startBasic ideasFirst, the entire architecture can be layered, generally can

C # Plugin Architecture combatC # Plugin Architecture in combat Jack H Hansen [2004-07-27]Keywords C # Plug-in Reflection (System.Reflection) property (System.Attribute)First, Introduction1. Introduction of the problemLet's say you've designed a program that's already deployed to the user's computer and that it works. But one day, the users called-they asked for new features to be added. Once you've identif

Large Site technology Architecture (i)--Large site architecture evolutionEach pattern description Describes a recurring problem around us and the core of the problem-solving approach.This way, you can re-use the program at once without having to do repetitive work.The so-called site architecture model is to solve the high concurrent access to large-scale sites, m

1. Overview Dr. Roy Fielding (see Personal homepage) is the main designer of the HTTP and URI protocol issued by the IETF. HTTP and Uri are the two most important web infrastructure protocols, so Dr. Fielding is one of the founders of the Web architecture. In addition to academic excellence, Dr. Fielding has been involved in the design and development of many Open-source software. He was the developer of Libwww-perl, one of the world's earliest HTTP

Summary of. NET Logical Layered Architecture,. net layered architectureI. Basic Knowledge preparation: 1. layer principles: (1) Each layer is called by the upper layer in interface mode.(2) The upper layer can only call the lower layer.(3) Dependency can be divided into loose interaction and strict interaction. 2. Business Logic classification: (1) application logic.(2) domain logic. 3. layer used: (1) presentation layer (User Interface Layer): domain

In the previous article, we discussed what a schema is. In fact, these basic concepts are very important for architecture, and most people think they are aware of the concepts they are accustomed to every day, but in fact they are subconscious and not active. For example, "What is a table?" "When I do training, I often take this example to ask you, answer all sorts of strange things." This actually led to the structure of the time, the different roles

This article is the nineth of a rambling architecture column, in which Kevin takes fire as a starting point and introduces the relationship between technology, business and architecture in depth. As the authors have said, technology has always been created in the context of human settlement of the demands of the business, and the aim is to gain greater and better benefits.One day to eat with friends just to

1.HDFS Storage Architecture(1) HDFS Architecture--File1) The file is cut into chunks (default size 64M), in blocks, each block has multiple copies stored on different machines, the number of copies can be specified at the time of file generation (silentRecognition 3)2) NameNode is the master node that stores metadata such as file name, file directory structure, file attributes (generation time, number of co

used to simplify system-level software development, such as operating systems, user interfaces, and language processing. Typical examples include macapp and Microsoft's MFC.(2) middleware integration framework. It is used to assemble distributed applications and components. Typical examples include Microsoft's DCOM, Alibaba oft's RMI, And OMG's CORBA.(3) enterprise application framework. It is used in various application fields, such as telecommunications, manufacturing, and finance.It can be d

Research on layer-3 Architecture Concept of three-tier architecture User Interface presentation layer (USL) Business logic layer (BLL) Data access layer (DAL) Bll separates usl from dal and adds Business Rules Role of each layer 1: Data access layer: mainly refers to the operation layer for raw data (in the form of storing data such as databases or text files), rather than raw data, th

C/S architecture C/S architecture can also be seen as a fat client architecture. Because the client needs to implement the vast majority of business logic and interface display. In this architecture, the part of the client takes a lot of pressure because the display logic and transaction processing are included, to me

Large Web site technology Architecture (i)--large-scale website architecture evolutionLarge Web site technology Architecture (ii)--Architecture modeLarge Web site technology Architecture (iii)--Architecture core elementsLarge Web