The film "Wu Wen Xi Dong" is a microcosm of a century of Tsinghua University, telling the spiritual inheritance of four generations of Tsinghua people - Li De Li Yan, Wu Wen Xi Dong.
The film is a symphony of destiny spanning a hundred years. Everything has a cause and effect, and all living beings have destiny. In every era, there are a group of young faces, their respective youthful growth and flourishing. At the best age, faced with the cruelest choices. Only ask about freedom, only ask about blooming, only ask about affection, only ask about original intention, only ask about courage, nothing about the west and the east.
Although the topic of the film is a bit heavy, it gives people a resolute and resolute, youthful blooming should be like this~!
Our topic today is a brief history of CDNs.
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The first generation of CDN - cache (1998-2003)
The inventor of the World Wide Web, Tim Berners Lee (see HTTP predecessors for more details) , noticed at the time that the Internet was becoming incredibly congested and slow. So he asked the math professor, Tom Leighton, if he could write an algorithm to solve the problem. In the days that followed, Tom and his graduate student Danny Lewin not only wrote the algorithm, they also decided to build a career with it. In the same year, Akamai was officially established, and the world's first CDN was born.
Sir Tim Berners Lee Tom Leighton
The original core idea of Leighton and Lewin was to cache content close to end users so that they wouldn't have to go to great lengths to access it. The benefits of this change: users can see video faster; caching can reduce the traffic burden on the middle mile of the Internet.
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Second Generation CDN - Acceleration (2003-2012)
For static content, caching works well for users, but it does nothing to optimize transaction processing or dynamic content. Therefore, in the face of various online applications involving a large number of transaction processing, including: e-commerce, games and enterprise applications, caching technology will face many challenges. In 2003, Akamai pioneered the world's first solution to this problem, "Dynamic Website Acceleration". Akamai engineers split dynamic transactions and optimize back-to-source TCP lines from the application layer to take the best path across the Internet.
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3rd Generation CDN - Mobile (2012-2017)
With the rapid development of mobile networks, the trend of mobilization of various applications has exploded. Under such circumstances, how to solve the problem of optimizing mobile network access quality is an urgent need. Akamai successfully solves the "last mile problem" with its flagship ION solution. The solution dynamically optimizes content and application delivery based on user situation or usage context (eg: user is accessing your website using 3G Internet, iPhone and mobile chrome browser, this is user situation/context).
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Fourth generation CDN - the future
Where will the CDN go in the future, no matter what the west and east, continue to move forward~!
1. Ubiquitous CDN: Widespread deployment is one of the foundations for a good CDN development. The more widely distributed the CDN, the closer it will be to end users, and thus the better the customer experience.
2. Big data analysis: Through CDN big data analysis, we can understand customer experience and behavior, and make the most informed business decisions accordingly. And it extends to interesting use cases such as machine learning and artificial intelligence.
3. Virtual Private CDN: Virtual Private CDN refers to a virtual CDN dedicated to a company. Take advantage of more optimized Internet transfers and local devices.
The future of CDNs is looking bright.
(This article has referred to a brief history of Akamai)