Although the app has only been online for two weeks, in fact, Yang Xiaotian started the layout half a year ago. Hundreds of thousands of microblog fans are not good-looking. Moreover, these microblog fans are sticky and admire Yang Xiaotian's professional level.

So when the health guard goes online, these people are the first batch of users.

At the same time, some of Tong Xin's Weibo fans also provided a lot of help.

This is the same route as when some apps go online and ask stars to speak for them. It's just that Yang Xiaotian really speaks for himself.

Normal is normal, but this achievement is real. 400000 registered users and 50000 deep users. This achievement is very beautiful.

In fact, if an application wants to survive, it must be profitable to ensure that the development and maintenance team and the operation team survive.

It has been estimated that almost 400000 users are needed for an app to survive.

From this point of view, health guards can survive.

Of course, Yang Xiaotian's goal is not so simple.

After a little thought, Yang Xiaotian said: "good results! Later, you can make a table for each person's workload, and I will give you a bonus! "

Zheng boning said with a smile, "OK, I'll thank you for them first! But the bad news still has to be said! "

"Well, go ahead, I'll listen! I'm mentally prepared! " Yang Xiaotian joked.

"The bad news is that our app needs a new server, because there are too many users. Now the server is not enough!" Zheng boning said.

"Why?" Yang Xiaotian was stunned. He didn't really know much about computers. After all, he studied medicine, so he asked, "I remember our server configuration is good, but it's not enough now?"

Zheng boning said with a bitter smile: "at the beginning, I thought it was enough, but I didn't expect that our app would be so popular. If it was just a general app, our server would be enough, but the key is the particularity of our app!"

Zheng boning began to popularize science to Yang Xiaotian.

General apps, such as watching videos, web pages and games, don't have high requirements for servers. For example, games, mobile phones or computers look colorful on the screen. In fact, they all use the internal resources of the mobile phone to run. They just send some instructions to the server to tell the server what my account has done, Then the server feeds back to the phone.

The requirements for servers and bandwidth are not high.

But health guards are different. To put it bluntly, health guards play with big data.

One of the reasons why it can analyze so many diseases is that there are doctors and experts behind it to interpret some cases artificially.

Second, it has enough case data to find the most suitable case data for analysis according to the user's input.

The second step is actually the core of the health guard, and it not only calls the previous data, but also learns from this data.

It is similar to the recently popular Google Go robot alpha dog.

The core principle of alpha dog is big data, that is to say, many people jokingly say that diligence can make up for incompetence.

How many games of go did Li Shi play?

Alpha dog has played tens of millions of chess games.

But just like this, it's just a more powerful chess score, just like dark blue.

Dark blue is a chess playing computer made by IBM in 1997. It uses big data or exhaustive method.

Before playing chess with people, it only did one thing, learning more than two million matches of all excellent chess players in the past 100 years.

And then in the game.

For example, when people get off the white riding, the soldiers take a step forward.

Dark blue began to calculate. After taking this step, if I go like this, how will the other party go? If I go like that, how will the other party go.

All these calculations are based on the two million games in his mind and the one-to-one analysis of the chess games in the game.

After that, dark blue will analyze it again. If I walk like this and the other side walks like that, how will the other side walk?

In this process, dark blue can calculate the next 12 moves.

This is actually "calculation".

Alfa, the dog, added a function of "learning" on the basis of calculation.

It partly simulates the function of the human brain, using a thread to simulate a brain cell. Tens of millions of threads run on each CPU, which is equivalent to thousands of brain cells on each CPU.

The link between brain cells is also realized by creating new threads, which is equivalent to the neural link between brain cells. The brain cell thread can grow and destroy, and the link thread can automatically change the target of the link. This is similar to the operation mechanism of the human brain.

By inputting learning materials (historical chess score), connecting threads automatically link and transform between brain cell threads according to certain algorithms, and the state of brain cell thread and connecting thread can be stored, which is equivalent to learning knowledge.

Therefore, what AFA dog stores is not the direct result, but the state of brain cell thread and connection thread. This is very similar to the physiological structure of the human brain.

Afagou has stand-alone version and networking version. The stand-alone version is limited by the ability of CPU, and the number of threads is relatively small, so it is equivalent to a slightly lower IQ.

And the networking version can do a lot of brain cell threads and connection threads, which is equivalent to being smarter.

Health guard, is such a method, of course, not as powerful as Google's alpha dog, but also in this direction.

This direction is correct. In fact, Yang Xiaotian and Zheng boning predicted that as long as there are enough in-depth users of health guards to communicate with them about their physical conditions every day, the more powerful the health guards will be.

It's like a doctor. A doctor who has seen 10000 patients is better than a doctor who has only seen 10 patients.

The former is well-informed, and even the doctor can blurt out what the patient's disease is just when the patient just says where he is a little uncomfortable.

All this is good.

But the key constraint is that the requirement of hardware is relatively high.

The human brain is complex. To simulate the human brain with a computer, we can imagine the requirements of hardware.

Yang Xiaotian sighed and asked: "the implication is to increase the hardware?"

Zheng boning nodded and said, "it's like this! Our current server is hosted in the computer room, but I think with the development of our business, because we rely more on the performance of the server, it's better for us to have our own computer room! "

"Need a lot of money?" Yang asked

Zheng boning said with a shy smile: "in a word, it's not too little! After all, the requirements of the computer room is relatively high, broadband has to pull the line, but we are not playing games, a little delay is OK! The price is not expensive! The main reason is that there must be a site. The server is piled up and covers a large area! In addition, it's decoration, which is not a small expense. The computer room requires dust-free and constant temperature, and because there are many servers, there are also requirements for radiation protection. In addition, UPS equipment is required, which are not cheap! "

Yang Xiaotian rubbed his temple and thought it was really bad news. He had a headache. He asked, "OK, you can tell me directly how much it costs!"

Zheng boning said: "after the expansion of computer rooms and servers, maintenance personnel have to keep up. I preliminarily estimated that at least three million yuan will have to be invested."

Yang Xiaotian nodded and said to Zheng boning, "I'll call ye mengrui in a moment. When you get there, you'll pay from ye mengrui. What equipment do you want to buy and what venue do you want to rent? Let ye mengrui coordinate with you!"

"Yes See Yang Xiaotian promised straightforward, Zheng boning is very happy.

After hanging up the phone, Yang Xiaotian rubbed his temple. It seems that he earns money fast and spends it faster. If he remembers correctly, his total savings now add up to only 3.2 million yuan. Now he goes out for 3 million yuan. It's really... Spending money like water.

What's more, he didn't spend the money by his hand. He couldn't even hear a sound. It was really unpleasant.

In fact, if he wants to make money, the health guard can make money now.

Zheng boning said that many pharmaceutical companies have contacted him and wanted to implant advertisements in health guards.

This kind of implanted advertisement is not the aimless advertisement of the advertising alliance, but a very accurate advertisement. For example, if a health guard user detects that his liver function is not very good, then the advertisement he sees is liver protection medicine, while another user's cardiovascular and cerebrovascular diseases are bad, what he sees is blood vessel protection medicine, which is called precise delivery.

But Yang Xiaotian is not ready to put these advertisements now, mainly because he has no time to verify the efficacy of these drugs or health care products.

Now the users of health guard are mainly diehard fans. It can't be said that they overdraw their reputation for money.

The most urgent thing is to do a good job in the service of health guards.

Of course, if you don't sell drugs, you can do other actions.

The first step is the registration platform.

In fact, there are some registered websites or apps on the market, but Yang Xiaotian wants to compete differently. The pain is not that he can register online, but that he can make an appointment.

As a medical worker, he knows that even if patients register online, they have to go to the hospital early.

After all, we have to queue up at the registration window, then get the registration form, and then queue up in the outpatient department.

The main pain point of health guards is that they don't have to wait in line to pay online and make an appointment to see a doctor.

The imaginary process is like this: the patient registers with the health guard, makes an appointment, for example, goes to the internal medicine department at 10 a.m., and then pays the registration fee.

Then, the patient can come to the hospital at 10 a.m. and show the QR code of successful payment to the doctor without having to get the number.

But the doctor side uses the handset or sweeps the code gun to sweep, even if is the authentication success.

In this way, it will save time and effort.

If it's bigger, it's more meaningful. There are many aspects that can be expanded. For example, is it a materialized office? It is also a contribution to the earth's environmental protection.