Generic Database Design

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall of the current web2.0 program, a big bottleneck is the database swallow metric." 　　However, how to determine the bottleneck of the system is a database, because only to determine the database is the bottleneck of the entire system, we have to optimize him, after all, there are so many needs to wait for us to do. 　　How do I determine that a database is a bottleneck? ...

1. Languages used in COUCHDB: Erlang features: DB consistency, easy to use license: Apache protocol: http/rest bidirectional data replication, continuous or temporary processing, processing with conflict checking, therefore, The use of Master-master replication (see note 2) mvcc– write without blocking read operation Pre-save version crash-only (reliable) design requires data compression view: Embedded mapping/Reduce formatted view: List display support for server ...

Absrtact: When the System Designer explores the IC business model with new application features, the main concern is the price. Strategic needs statement: As the market conditions will be improved over the next two years, the importance of the roadmap for advanced technology development will be increased. Encapsulated internal system (SIP) and embedded DRAM ASIC will become the mainstream technology in the next 2-5 years. The research aims to further the electronic system closer to the single chip solution, the designers to the ASIC and programmable logic device (PLD) provider more requirements. Higher performance, larger memory and kernel libraries ...

In the past, we have introduced some principles of software development, such as the 10 commandments of high quality code and the UNIX design principles described in the UNIX legend (next article). I believe that you can learn from middle school some knowledge of design principles, as I said in the "How Do I Recruit procedures", a good programmer usually consists of its operational skills, knowledge level, experience level and ability four aspects. Here I would like to talk about some of the principles of design, I think these things belong to the long-term experience summed up knowledge. These principles should be understood by every programmer. But...

Intermediary transaction SEO diagnosis Taobao guest Cloud host technology Hall to get fast growth, we have to know some of the terminology of web design. 　　Like many other industries, web design is still in its infancy, but it already has too many acronyms, and some simple techniques and ideas must be understood. 　　Today's environment is 100 times times more complex than it used to be because we use tools and frameworks on the web, and the development of language and libraries makes all the progress fast. Designers-even professional web designers ...

With a growing number of Web fonts, paid Web font services, and off-the-shelf tools, typography takes back its title as the Queen of Design and is the key to all graphics and web design. Today, many designers in the design of typesetting, the main consideration is essentially aesthetic issues. The problem is that we are used to treating typography and font design as two interchangeable terms, but actually they are different. Take a quick look at the label "typography" on the dribbble and see the trend immediately. The perfect use of the temptation of font design will affect our trial ...

About the Internet of things (Internet of Things, abbreviated IoT) is an internet-based, traditional telecommunications network, such as information carrier, so that all can be independently addressed common physical objects to achieve interconnection network. The internet of Things is generally wireless network, since everyone around the equipment can reach 1000 to 5,000, so the Internet may have to contain 500 trillion to 1000 trillion objects, in the Internet of things, everyone can use electronic tags to connect real objects online, can find out their specific location on the Internet of things. Pass STH.

For most web sites, the shopping cart is the site of the throat, the order is white silver, all the money must flow through the shopping cart, shopping cart can not be lost. Excellent shopping cart design requires at least two missions: one is to facilitate the user to buy more goods to pay more money, and the second is to help users to take care of the goods to be purchased, convenient next time to dig silver. Shopping cart is a more complex system, usually with orders, merchandise, inventory, membership and promotional modules have an ambiguous relationship, is also regarded as far-reaching. Therefore, it is not easy to direct your programmer to modify the shopping cart without knowing the cart. Said this ...

Design and realization of hbase large object storage scheme the era of Kang Yi mass data in Nanjing University is coming, with the rapid development of the Internet, network access, network access logs, communications records, video data, mobile networks and a variety of intelligent terminals produced by the huge data set of the scale is also expanding dramatically. An important feature of the dataset is that more than 80% of the data is unstructured. Traditional technology can not be qualified for the analysis, management and mining of large data sets, and the industry is hbase for a popular solution to the large-scale processing. ...

Absrtact: In the opinion of Internet practitioner, the root of the problem of 12306 purchase ticket website lies in the incompatibility between the railway ministry's self-contained habit and the trend of Internet openness and transparency. In spite of the difficulty of docking with Tiero, programmers spontaneously set up in the eyes of Internet practitioners, the root cause of the 12306-ticket purchase site is the incompatibility between the railway Ministry's self-contained habits and the era of open and transparent Internet. Despite the difficulty of docking with "Tiero", "programmers" spontaneously set up an Open-source project designed to optimize and develop 12306. We...