China's LTE commercialization is approaching, and the industry's attention to the subsequent evolution of LTE has reached a new peak. Compared with 3G, LTE significantly improves the spectrum efficiency. However, the industry has not stopped. A few years ago, 3GPP began to research and develop the LTE-Advanced standard, and a series of technologies that can effectively improve the performance of existing LTE Networks emerged.
Among them, the two most
High-Performance MySql evolution (I): Data type optimization _ bitsCN.com
High-Performance MySql evolution (1): Data type optimization
The database performance tuning process involves a lot of knowledge, including whether the attribute settings of fields are appropriate, whether the index is created properly, and whether the table structure is reasonable, are Database/operating system settings correct ....
The evolution of programmers from beginner to advancedSoftware development is a strange industry, the market is far from demand. This is a problem that has been around for years, and it has intensified over time.We have a serious shortage of people who can meet our needs. The industry is quite young. Most software projects are unsuccessful. Almost all projects will go beyond the budget. Our best approach to solving this problem boils down to-"using so
Testing the evolution of the four budget process, the objectives and results of all the test projects are as follows:1, the value 100 within the range of 10 questions subtraction random question, subtraction allows negative numbers, division allows the remainder2, the value 100 within the range of 10 questions subtraction random question, subtraction allows negative numbers, division does not allow the remainder3, the value 100 within the range of 10
It is not a normal phenomenon that the rat and raves are suddenly changed from everyone's pursuit. Excessive virtual high capital, the excessive apotheosis of entrepreneurs, resulting in a large number of today's failure of the tragedy. In fact, 99% of the bankruptcy is a normal phenomenon, they are doomed to fall, if entrepreneurship is so good to create, not everyone can become entrepreneurs? Not because of the collapse of a large number of entrepreneurs to deny the value of the entire indus
" Development Enterprises in Soft International Co., Ltd. This approach is called "Jay", it will be the most basic and broad groups in the IT community next stage of collective evolution direction.Old IT man: the Liberation of productivity Horn has rung"60后" of the China Soft International board chairman, CEO Chen Yuhong claiming to be "old IT people." Not at the age of defeat, he said, "Our generation of logic clear, character tenacity, but less than
to automatically add buffer-related logic to the class file by using Maven for compile or install.At this point, we have analyzed the buffer code directly coupled to the code, and analyzed the shortcomings, the final evolution of the annotated mode, external configuration, and a brief introduction of the implementation method.Concrete implementation, the use of the technology is more, there are MAVEN plug-ins, there are ASM, template engine and tiny
The characteristics of software evolution, software maintenance and software re-engineering are mainly introduced.Software maintenance is inevitable , software changes will lead to the degradation of software, development efficiency and input resources independent. Software maintenance refers to modifications made to software products during the operation or maintenance phase of the software. Software maintenance is divided into corrective maintenance
Traditional networks are now unable to meet increasing user demands, and traditional networks require fundamental refactoring and change, and these changes are being driven by software-defined networking (SDN).Opendaylight (ODL) is a multi-Protocol SDN deployment controller architecture that supports high availability, modularity, scalability, scalability, and resiliency in a modern, diversified vendor network. Although SDN is still in its infancy and evolut
, MIPS32 Second Edition also supports mips-3d.
The Mcu:micro-control unit micro-control unit enhances memory-mapped I/O processing and provides lower interrupt latency. MIPS32, MIPS64 all support MCU.
7, MICROMIPS32/64The MICROMIPS32/64 instruction set architecture integrates high-performance code compression technology with 16-bit and 32-bit optimization instructions, maintaining 98% MIPS32 performance, reducing the cost of the chip and reducing system power consumption at the same tim
backgroundInternet entrepreneurship has continued to soar in recent years, with sectors ranging from social, information, e-commerce and life services. There are also many excellent apps, and the features of these products or platforms include "fast", that is, fast updating, fast iteration. However, as a software engineer's point of view, according to previous software engineering theory, the system should consider more complexity and good expansibility at the beginning of design, as far as poss
Tags: I/O file data on cti ad sizeStorage-related evolution of Intel-based computer architecture2. How does a disk record 0 and 1 as well as the perceived, head structure?3HMR pmr hamr smrtdmr and head position correction principle4 disk seek demo and other5 Hybrid hard drive, helium hard drive, and disk energy saving6 IP hard drive7. Kernel I/O path and SCSI protocol architecture8 principle of mainstream Raid types, Raid card architecture, Raid card
The network has been very stable over the past few days, and it is often because DNS cannot be resolved. Today, I Opened Evolution to receive emails. I found that the "send/receive" button in the toolbar is unavailable and I don't need to install Thunderbird. Thunderbird needs sudo Yum install libstdc ++. so.5.
However, I still think evolution is easy to use. I went to the Internet to check and found thatE
the distributed call sharing business service. Large Web site structure evolved here, basically most of the technical problems have been solved, but the development of things to a certain stage will be out of the original intention to a stronger direction. Many large web sites are now building their own cloud platforms to sell computing as a resource.Large-scale website architecture evolution after a long time to develop so, in the process is also a
algorithm distribution data, that is, the performance of the hardware on the average distribution of data, if the horizontal split server performance differences, then the average distribution is caused by the emergence of hot issues, if we do not change the hardware differences, Then we have to add weights in the allocation principle of the algorithm to dynamically adjust the distribution of data, so that the production of artificial data distribution imbalance, then to the upper level of the
Web BrowseChinese is a Web browser or Web browser.Web browsers are now everywhere, and you may be able to take their functionality for granted, no matter what browser you end up choosing, but you may not know that these web browsers are the essence of the 20 development. Here we go back to the 1991-when the first web browser was born, a brief journey began on the evolution of the Web browser. Tell you how the Web browser is going to evolve to today. W
Evolution of large-scale website system architecture and popularization of key technologiesCourse View Address: HTTP://WWW.XUETUWUYOU.COM/COURSE/40Courses from the School of worry-free network : http://www.xuetuwuyou.com/Learn how the architecture of a large web site evolves and improves step-by-step, and is pervasive in some of these key technical knowledge.Lesson 1: The birth of the original architectureLesson 2: Introduction to CachingLesson 3: Clu
Java I/O programming (I)-evolution of Java I/O
Reprinted please indicate the source: http://www.cnblogs.com/Joanna-Yan/p/7419117.html
In earlier versions of JDK, Java does not fully support I/O, and developers are faced with great challenges and difficulties when developing high-performance I/O programs, the main problems are as follows:
No data buffer, I/O performance problems;
There is no Channel concept in C or C ++, but only the input and outpu
Previous wordsThis article will describe in detail the evolution of the Web site architectureInitial stageLarge websites are developed from small Web sites, and the same is true of Web architectures, which evolve from small site architectures. Small sites initially do not have too many people to access, only a single server is more than enough, then the application, database, files and other resources are on a single server. Usually the server operati
Original link: https://blog.twitch.tv/gos-march-to-low-latency-gc-a6fa96f06eb7#.lrmfby2xsBelow we will introduce the history of GC time-consuming evolution of https://www.twitch.tv video live website in the process of using go. We are a live video system and have millions of of online users, messaging and chat systems are all written with go, the service of a single machine connected to about 500,000 users. In the version iterations of Go1.4 to 1.5, t
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