Taobao Technology Development (introduction) One

the Carnival of Singles ' Day

"Time is up, open the gun." "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 devote themselves to Taobao Mall's annual large-scale online shopping promotion-" Taobao double 11 carnival. Mei opened the treasure that has already been collected--a brand of snow boots, fast click Buy, payment, a look back found 3000 pairs of boots have been sold out.
Xiao Mei jumps up and shouts "Oh yes." ”
Mei did not know, on 11th after 0 o'clock in this 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 "war headquarters", Taobao Technology Department of a group of engineers, is closely staring at the website traffic and transaction data. On the whiteboard is the note they just make, betting on who can most accurately guess the peak traffic and the total amount of transactions throughout the day. They have plenty of food and a variety of refreshing drinks on hand.
A burst of telephone noise, is the front line 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 took the initiative to pick up the phone: "Turnover of more than 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 an exclamation.
"It's finished." Suddenly there was a loud shout, all eyes are nervously staring at him, I saw him scratching his scratching his heads, hey, "I bet less, 2 billion easy can be over, I add 500 million", he ran to the whiteboard edge of his bet wiped, write 25, then someone wrote 28, someone wrote 30, someone ran to micro Bo open the market, Colleagues have reproduced bets. The next 24 hours, the wartime headquarters of the engineers can not rest, they stare at the site's various monitoring indicators, timely adjustment of the machine and increase and decrease function. Against the first wave of the peak, these people began to sneak in to buy things for themselves, we exchange with each other to buy the mobile hard drive, which clothes suitable for their girlfriend, from time by day, some people cry baby was robbed, credit card quota is not enough. At the same time, the stakes on the side whiteboard are bigger and higher.

November 11, the most days of the stick was self-ridicule by netizens into a festival-"Singles Day." And Taobao with a crazy discount promotion to give it another meaning-"shopping carnival." November 11, 2011 This day, Taobao Mall and Taobao turnover of the sum of 5.2 billion, this figure is "shopping paradise" Hong Kong a day retail sales of 850 million 6 times times.
Netizens feel the joy of crazy Rob, and the site's technicians feel is "pressure Alexander." It's easy to do it like your home catering and entertaining your neighbors. If all the people in the ten-Li eight village are entertained, the people who eat are naturally happy, but they are not generally able to be done by others. Can be done so feast, need a strong financial and material resources, organizational skills, technical strength (for example, to do so many dishes, your wok must be "distributed", "replicable", "extensible", wash vegetable cutting to have "workflow engine", the path of the serving is calculated using graph theory, Even the kitchen sewer has to be redesigned).
Taobao can host such a feast, the technical strength of the site is visible. Taobao has one of the country's largest distributed computing clusters of Hadoop, daily new data 50TB, 40PB of mass data storage. The CDN Network, which distributes over 80 nodes across the country, supports traffic exceeding 800Gbps. Taobao's search engine is capable of real-time search of billions of of commodity data, in addition to its own research and development of file storage systems and caching systems, as well as Java middleware and message middleware systems, all of which constitute a huge e-commerce operating system. In addition to business data, Amazon's earnings show that it has completed about $48 billion in turnover in 2011 years, with EBAY2011 annual earnings of about $60 billion (not including its own auto trading platform). No matter from the turnover, the number of goods, the growth rate and other indicators, Taobao is far beyond this, is currently the world's largest e-commerce platform. (as Taobao unlisted company, not published 2011 results, the above content from Taobao Technology Vice President @_ of the Weibo)
These technical data may have caused some students to feel uncomfortable, in order to let more people read this book, we from a technical point of view, when Amy visited Taobao, what happened on the website. The following reference: "You just bought a thing on Taobao" technology popularization post ", from Nanjing University of Posts and telecommunications Samson students

In order to have a more intuitive comparison, we say a colleague, he in 2011 before the Singles Day promotion, traffic up to 12Gbps (they have such a large flow, the boss is very happy, said the data on the microblog), this time the traffic reached the limit, the site almost hung up, the user can not place orders. and Taobao Singles Day network traffic up to more than 800 Gbps, bring to the banks and courier company Flow also let them pressure Alexander, Formidable enemy (later, they can hold Taobao to bring the traffic for glory and everywhere propaganda). In addition, if you buy over-the-Internet tickets, you can more appreciate the site can support how much traffic is important. But this is not the overnight, nor the money can do it.
The above comparison of these sites, perhaps the reader can easily guess which one, here to make a comparison, absolutely no ridicule people's meaning, the use of the usual website technology program, to achieve this degree has been good. The development of any website is not overnight, at what stage to adopt what kind of technology. In the process of development, the site will encounter a variety of problems and business pressure, it is these reasons to promote the progress of technology and development, and the development of technology will in turn promote greater business. They are mutually reinforcing. Now the flow of Taobao is the world's 12th, ranked 3rd (the U.S. ebay global ranking 23, the top two domestic Baidu and Tencent). Taobao system also from the use of a server, to the use of more than one server. This book is for you to describe Taobao throughout the development process, all the active and passive technological changes in the cause and consequences, which is composed of many interesting stories.
Just as many people or organizations have succeeded, they have fabricated a beautiful legend for their origins. Taobao's origins, there are a lot of legends on the Internet, we will start from its birth.