Sleepless Doctor

The anti-epidemic situation is grim, especially when all parts of the country start to enter a state of war, the information received from the frontline makes people worry.

No matter how serious the work attitude of the front-line staff are, they will not miss everyone and record everyone's whereabouts... Without a unified database, everything seems so difficult.

It's not a difficult problem, but it's impossible to do it at all.

With 1.4 billion people across the country, it is an almost impossible task to control everyone's whereabouts during the epidemic.

Specific to every province, every city, and every county, the difficulty is basically similar. The front-line personnel are busy and messed up, but most situations can only "make do".

On February 3, after Lin'an implemented the strictest measures for closed management in the city, as one of the districts and counties in Zhejiang Province where the epidemic first broke out, Yuhang District was aware of this problem.

Not only they can realize it, but they can solve it.

Ali, the top Internet giant in China, is headquartered in Lin'an, and has taken on this impossible task without hesitation.

Yuhang District cooperated with Alibaba Cloud, DingTalk, Alipay, etc. to form a virtual online team to urgently develop a green code and implement "full population coverage + full process control + full field joint defense".

This is an unexpected war

This is an algorithm that needs to be "100%" accurate

This is a brand-new technology related to precise control of the epidemic

Li Haolong led the project team to undertake this task, to overcome the incomparable management and control work in the old environment.

Before that, Li Haolong watched the live broadcast of Vulcan Mountain on TV. He regretted not going to Shandong to learn how to drive an excavator.

If you know how to excavate, you will definitely be on the volcano **** construction site at this time, driving the excavator and using your own hard work and sweat to achieve the speed of China, and build the infectious hospital most needed by the people of Tianhe at the fastest speed.

Or if you were studying medicine back then, now you join the team rushing to help Tianhe, flying against the wind, and your heart is surging.

But the opportunity to fight the epidemic is still here.

After receiving the task, all Li Haolong's hair stood up. Although it is a legendary programmer, not every programmer is bald.

But

Li Haolong's original team consisted of only 4 people...

The shabby number of people cannot be compared with the heavy responsibility.

Compared with the number of people, the complexity and accuracy of the algorithm has increased exponentially.

Normally, if an algorithm has an accuracy of more than 90%, it can be regarded as a commendable model.

However, the Yuhang Health Code is very important, and it affects the whole body. If one is sent incorrectly, it will have a huge impact. It must be 100% accurate.

Li Haolong used to type codes for work. What does his boss say about 996 good fortune? Naturally, it is good fortune to pay overtime. The more you give, the harder you work, and the more you look like a wolf.

But this time is different.

In the past, typing code was for money; now typing code is for victory and to choke the throat of the virus with both hands.

But……

It is not enough to have a cavity of blood.

Health code, too difficult!

Although it is only a Yuhang health code, Li Haolong knows that in essence, as long as the base is completed, the health code of Zhejiang Province and even the whole country can be a matter of course.

The first step is often the hardest.

The task requires a smart phone to be associated with the most cutting-edge Internet technology, whether it is in Beijing, Shanghai, Guangzhou, Shenzhen, Hangzhou, or in remote frontiers or mountainous areas.

In the past thousands of years, humans and information have been in a state of separation.

The invention of language, writing, printing, telegraph, and the Internet can make people find information better. After entering the era of mobile Internet, mobile phones have become an information organ of human beings.

Criminals on the Internet buy personal privacy and use it to commit fraud.

The health code not only meets the requirements of the district, but also protects the privacy of users.

But how to output this complex information efficiently and accurately is no less than a war. Cloud computing is the technical support of this revolution.

Day and night, Li Haolong and everyone in the project team knew that they had become an integral part of this war.

They still don't know how much they can play a role, but they can come when they are called, they can fight when they come, and they can win when they come!

At this moment, they burst out with unprecedented enthusiasm. Lines of code are like masks, protective suits, and ventilators, providing support for the war against the epidemic.

In the winter of war and chaos, there are rumblings everywhere, and all the vegetation on the Internet is full of soldiers.

Li Haolong no longer pays attention to information that is difficult to distinguish between true and false. He joined other Ali project teams to start his own war.

This is their battlefield.

For more than 80 hours, I slept indiscriminately when I was sleepy. I didn't even remember whether to eat or not after a meal. I didn't dare to delay every minute.

Finally, on the evening of February 6, Yuhang Green Code was officially completed.

Intensive detection and elimination of all vulnerabilities, Yuhang Green Code was officially launched in the early morning of February 7th!

Li Haolong didn't stop, he took a larger and larger project team and started tracking Yuhang Green Code, fixing loopholes, and ensuring "100%" accuracy.

Within 24 hours, Lin'an Yuhang District completely entered 269,000 people.

First battle,

Victory!

Just as Yuhang Green Code was sprinting online, the Hangzhou Health Code project team was racing against time.

On February 6, Secretary Zhou of Lin'an proposed at an important meeting that in order to resume work in enterprises, it is necessary to take advantage of Hangzhou's digital economy, establish a unified digital declaration platform throughout the city, implement personal electronic health codes, and realize timely information sharing.

Both the fight against the epidemic and the economy must be grasped, and both must be firm.

With the passage of time, the resumption of work and production has become imminent.

Can the nation press the pause button and use strategic materials to survive for half a month, a month, or longer? We must promptly resume work and production, and we must not miss any worker who may be infected.

The situation is extremely complicated, and the meeting put forward a request: the company's employee health code will be presented the next day.

Just a business logic diagram is extremely complicated.

On February 8, the company's employee health code was quickly launched. The development team immediately transformed into the Lin'an health code project team, and more technical personnel were transferred to station.

With the foundation, with the efforts of more programmers, everything is well done.

On February 9, the first version of Lin'an Health Code was completed.

Countless people searched for errors all night and made corrections.

Unlike the slightly crude Yuhang health code, the Lin'an health code associates personal identification with the confirmed or suspected data collected by the national health department, and data provided by the aviation and railway departments to generate a QR code pattern.

The health code system is generally divided into five levels: infrastructure layer, data resource layer, application support layer, business application layer, user and service layer in the order from bottom to top.

Each branch performs its duties, and each branch tries its best to produce line after line of code.

More of them are unable to leave their names in the era, just like a war, no matter how magnificent a battle is, it is composed of countless "unknown soldiers".

But it is not important.

Winning the war against the epidemic and seizing the time to resume work and production are the most important things at hand!

none of them.

They face extremely complicated situations, and the various running-in between various departments is smoother than ever.

At the moment of the epidemic, everyone is working together to become the "no name" of the times and solve many headaches.

Ding Xianshu, product manager of Code Engine, has strands of hair.

Typical situations and concise course of action have been resolved, but complex situations have caused people to collapse.

Sometimes Ding Xianshu felt that he went back to elementary school and started to do those heinous questions.

For example, it is one thing to drive through the epidemic area and whether to rest in the rest area is one thing. It is another matter to stay in Hubei for one night. When riding a high-speed train, passing through the epidemic area, there are many people getting on and off the vehicle. How to distinguish and calculate? How to design...

Or if there is a suspected or confirmed case in the community, does the health code change to yellow or directly red, or the color does not change...

This is not just a question that programmers have to face, it's more like the highest exam question in sociology.

Especially critical is that the epidemic situation changes all the time.

With the emergence of asymptomatic, false-negative infections, a place escalates into a danger zone, and every change in the situation means a change in the rules.

How to deal with the logical relationship of rule changes is comparable to Olympiad.

On February 11th, Lin'an City officially launched the Hangzhou Health Code and implemented three-color dynamic management of "green code, red code, and yellow code".

On February 12, Zhejiang Province decided to extend the health code to the whole province.

Behind the Zhejiang Health Code is a vast project that requires collaboration, involving technology, products, legal affairs, customer service... There are also many departments in Zhejiang Province that work side by side with the Alibaba Cloud Data Intelligence team.

Everyone in the project team knows that what they are doing is of great significance.

Walking on thin ice every day, like a knife licking blood, Li Haolong was afraid that system problems would have an adverse effect on epidemic prevention, and he wanted to check it over and over every time he wrote a line of code.

One hundred percent, this is something that is basically impossible in the eyes of programmers, but Li Haolong and members of Ali's many project teams have made a "non-separate" requirement of themselves.

It must be 100%!

After demand, product design, UI design, front-end, back-end, testing, operation and maintenance, a series of personnel ~www.wuxiaspot.com~ position cooperation, consider feasibility and rationality together.

Sleepless

Pillow Goddard

Behind the seemingly simple health codes are the efforts of countless people, as well as the top-level network laying and the construction of an information society.

New conditions, new eras, new ideas, an inexplicable war tempered the cornerstone of the new China's Internet era.

Mobile phone positioning,

Cloud computing with massive data

Big data related

After handling countless things in a short period of time, Ali's project team handed in a satisfactory answer.

Li Haolong and other technicians did not expect that after 92 days, a murderer who had absconded for 24 years would guard himself because he had to show his health code wherever he went.

The anti-epidemic skynet they weave has a side effect that makes people laugh.

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