Taobao Technology Development (introduction) One

the Carnival of Singles Day

"Time to go, open the Rob." "Sitting in front of the computer has long been waiting for a long time to see the day has been to November 11, 2011 Zero, they can not wait to plunge into Taobao Mall's annual large-scale online shopping promotional activities-" Taobao double 11 carnival. Amy opened the treasure that has already been collected--a brand of snow boots, fast click to Buy, payment, a look back to find 3000 pairs of boots have been snapped.
Amy jumped up and shouted "Oh yes." ”
Mei did not know, just 11th after 0 o'clock in the minute, the country has 3.42 million people and she poured into Taobao mall. Of course, she did not know, at this moment, in an office in Taobao, Hangzhou, brightly lit, here is the "wartime command", Taobao Technology Group of Engineers, is staring at the site's traffic and transaction data. On the whiteboard are the bets they've just put on, betting on who can best guess the peak flow and total day trading. They have plenty of food and a variety of refreshing drinks handy.
A hasty phone rang, the frontline department asked the data, the engineer loudly reported: "The first 1 minutes, into the Taobao Mall members have 3.42 million." After a while, the engineer picked up the phone: "The turnover is over 100 million, now is the first 8 minutes." "Next," the first 21 minutes, just broke through 200 million. "The first 32 minutes, 300 million". "The first 1 hours, 439 million". The data then appeared on Weibo, causing a scream.
"It's finished." "Suddenly someone shouted, all eyes are tense stare at him, saw him scratching scratching his head, Hey hei smile" I bet less, 2 billion easy to go through, I add 500 million ", he ran to the whiteboard side of his bet wiped, write 25, then someone wrote 28, someone wrote 30, someone ran to Weibo on the handicap, Colleagues have reprinted their bets. The next 24 hours, the wartime command of the engineers can not rest, they stare at the site's various monitoring indicators, timely adjustment of the machine and increase or decrease function. Withstand the first wave of peak, these people began to steal their own things, everyone exchanges with each other to buy a mobile hard drive, which clothes for their girlfriend, sometimes someone cry baby was robbed, credit card amount is not enough. At the same time, the stakes on the side whiteboard are bigger.

November 11, the most days of the stick is the Netizen's own ridicule became a festival-"Singles Day." Taobao has also given it another meaning with its crazy discount promotions--"Shopping carnival". November 11, 2011 This day, Taobao Mall and Taobao turnover and breakthrough 5.2 billion, this number is "shopping paradise" Hong Kong retail sales total 850 million of 6 times times a day.
Internet users feel the joy of crazy robbery, and the site's technical staff feel is "the pressure of Alexander." It's easy to make a feast for the neighbors, just like your family. If the feast of ten Li eight township all the people, the people who eat naturally happy, but it is not the general family can do it. Those who can do such a feast need strong financial and material resources, organizational ability, technical strength (for example, to do so many dishes, your wok must be "distributed", "replicable", "scalable", wash vegetables and cut vegetables to have "workflow engine", the way to serve the dishes to be calculated by graph theory, Even the kitchen sewer has to be redesigned.
Taobao can host such a feast, the technical strength of the site is evident. Taobao has one of the country's largest Hadoop distributed computing cluster, the new data 50TB, there are 40PB mass data storage. The CDN Network, which distributes over 80 nodes across the country, supports more than 800Gbps of traffic. Taobao's search engine is able to search billions of of merchandise data in real time, as well as a self-developed file storage system and caching system, and Java middleware and messaging middleware systems, all of which constitute a large e-business operating system. In addition, from business data, Amazon's earnings show that it has completed about $48 billion trillion in 2011-year earnings, with a EBAY2011 of about 60 billion dollars a year (excluding its independent car trading platform). Regardless of turnover, commodity quantity, year-on-year growth rate and other indicators, Taobao is far beyond this, is currently the world's largest e-commerce platform. (due to Taobao unlisted company, did not release 2011 years of performance, the above content from Taobao Technology Vice President @_ Line epilepsy Weibo)
These technical data may have made some students feel uncomfortable, in order to allow more people to read this book, we from a technical point of view, Mei visit Taobao, the site what happened. Under the reference: "You just bought a thing on Taobao" technology popularization posts ", from Nanjing University of Posts and telecommunications Sun Fang classmate

In order to have a more intuitive comparison, we say a peer, he in 2011 before the Singles Day to do promotions, traffic up to 12Gbps (they have such a large flow, the boss is very happy, in micro-blog said this data), this time the flow reached the limit, the site is almost dead, users can not place orders. and Taobao Singles Day network traffic up to more than 800 Gbps, bring to the banks and express Company's flow also let them pressure Alexander, Formidable enemy (later, they can hang on Taobao to bring the flow of pride and everywhere publicity). In addition, if you buy over the Internet ticket, you can appreciate how much the site can support the flow of how important. But this is not done overnight, nor is it possible to do it with money.
The above comparison of these sites, perhaps the reader can easily guess which one, here take out for comparison, absolutely no ridicule the meaning of others, the use of the usual web site technology program, can do this degree has been good. The development of any website is not an overnight, what kind of technology to adopt at what stage. In the process of development of the site will encounter a variety of problems and business pressure, it is these reasons to promote the progress and development of technology, and technology development will in turn promote greater business. The two cause each other and promote each other. Today, the flow of Taobao is already ranked 12th in the world, ranked 3rd in the United States (23 of the world's ebay, the top two in the country are Baidu and Tencent). Taobao's system also from the use of a server, to use more than a server. This book is for you to describe Taobao throughout the development process, all the active and passive technological changes in the cause and the cause, which consists of a lot of interesting stories.
Just as many people or organizations have succeeded, they will invent a beautiful legend for their origins. Taobao's origins, online also has a lot of legends, the following we start from its birth began.