Riding the wind of rebirth

Chapter 974 Prospective

This made no sense, but Zhou Zhi felt that there was no need to talk more about it with Guan Dabin. Uncle Guan, you don't even know how much wealth you have bought yourself!

However, Zhou Zhi was reminded of another thing: "Uncle Guan, are you familiar with the POS system of Heheng Supermarket?"

"Wait..." Guan Dabin stood up and walked into his room, and then took out a thick stack of documents: "I don't know if these are useful to you, I found the documents from the Information Department."

Zhou Zhi opened the material and looked at it: "Even Heheng's system is still in stand-alone mode?"

The settlement system of the supermarket is a system that can be simple or complicated, but it is a very forward-looking project. Judging from the current status, Heheng's supermarket system is actually a code reader and a cashier box, plus an information record terminal.

After the front-end system is closed every night, these records will be transmitted to the back-end server, and a series of financial settlements will be performed on the server, and the inventory of the entire supermarket will be re-adjusted, and transaction volume settlement and financial settlement will be performed.

Compared with Jiachuan Sugar and Wine Company's monthly inventory, such a system can achieve daily settlement, which is already far advanced at present.

But in Zhou Zhi's eyes, the system was still far behind because it couldn't clear up in real time.

In the whole system, the front end is busy during the day and the back end is busy at night, which is actually a great waste of computing resources.

At the same time, due to the impact of the batch time at night, after the settlement is completed, it is not far from the time when the supermarket opens. If some problems are finally found from the financial report analysis, such as out-of-stock replenishment, the response time left for the logistics center is already extremely high. short.

In fact, many things in this system can only achieve T+1 or even T+2, which means that the information processing time will lag by one to two days. The average value judges that the product may be out of stock tomorrow, and if there is still one or two days of stock, the manager will be reminded that it needs to be replenished.

That's good enough for a supermarket, but if it could be better...

If you can do better, then use the Internet to let the front-end scan the code and send the shipment information directly to the background, let the front-end and background balance the calculation, and control the inventory of the supermarket in real time. If the purchase scanning is also performed at the same time , The background of the entire supermarket can record the inventory of incoming and outgoing goods in real time.

When the supermarket closes every day, the system inventory, cashier, accounting, and many other tasks have been completed in real time. The manager can adjust the marketing strategy in time according to the sales situation of the day, adjust and replenish the goods, and have enough time to wait for the next opening.

If you want, you can even change the way the supermarket operates, from an eight-hour operating system to a 24-hour non-stop operation.

With this system, we only need to go one step further and use a logistics system to cooperate with it, and we will be able to open supermarkets online in the near future.

So Amazon, Taobao Tmall, and Jingdong Online Mall were born...

This is the theory of evolution of the POS supermarket settlement system.

The design principle of this system itself is actually not complicated, and even the initial investment is not too large, but people nowadays do not have such advanced application scenario presets, or the old saying of today's engineers - catch up, solve it first If there is, let's talk about it.

Everyone is crossing the river by feeling the stones. For the future scenario application of the Internet information technology industry, a supermarket settlement system based on the LAN architecture, or a hospital outpatient system is already the limit of everyone's imagination.

This is the disadvantage of the School of Science and Technology. Everyone is used to waiting for the country to allocate scientific research projects. The direction of research is more to solve the technical problems that are urgently needed in the country. As for helping commercial applications, everyone is confused and does not know how caught off guard.

Zhou Zhi’s graduation design topic that year was hospital software design, and the tutor did not have any extra requirements, not even coding. As long as you can draw a qualified hospital workflow flow chart, you can graduate.

That is to say, the work of various departments of a hospital, such as registration, allocation of consulting rooms, consultation, prescription of medicines, checkout, and dispensing of medicines in pharmacies... this set of work is divided into work modules and workflows, and a database that can support its work is drawn. , control program, transmission program, calculation program, statistical program, and the completion of the system design is considered a graduation.

For this reason, Zhou Zhi went back to his hometown and stayed in the People's Hospital of the Three Anti-Uncles for two months, worked out a system design plan, and finally completed his graduation thesis defense.But whether the plan was hatched into a product by the mentor in the end, only God knows.

The tall building started from the ground, and Zhou Zhi is going to show the system design framework in his hand to Director Mai, and try to see if he can follow his own thinking and firmly follow the server model to complete it.

Regarding the working mode of the Internet, there are now heated discussions in the industry.

That is the choice of client mode and server mode.

The so-called client mode is to solve the problem of information transmission bottleneck. Each terminal must download and install a system to make it a "client", so that those problems that can be solved on the terminal can be solved as much as possible in Client computing solution, only the data that really needs to be transmitted and interacted with will be transmitted to the central server through the network for the final "big calculation".

For example, the current Heheng system is a typical client system.

The server mode is actually the later Internet mode. Each terminal does not need to download the client software, but directly accesses the system website through the terminal. All information is directly transmitted to the center for storage, and the local data is also read from the website in real time. , the front end has no computing function, just an input and output port.

The advantage of this is to achieve the uniqueness, authority, and versatility of the data, and there will be no problem of data inconsistency caused by the clearing time difference between the central server and the client. Of course, it is the best way.

When the Internet matures and the network transmission speed meets the needs, the two architectural models will bloom separately. Among them, the client model has developed into APP portals such as video games, music, and movies, while the server model has developed into major website portals.

In the computer age, the east wind of website portals overwhelmed the west wind of APP portals, but after entering the era of smart phones, the west wind of APP portals overwhelmed the east wind of website portals.

It depends on what the needs of the time are.

However, today when the Internet is still staggering, adopting the server model will undoubtedly cause great pressure on the network. Therefore, the development of client systems is the mainstream in China, and the server is currently only in the experimental stage.

As a person who has experienced it, Zhou Zhi of course wants to grasp this forward-looking perspective, so that when the wind blows, he is already standing on the wind, and at the same time has a pair of huge wings.

"It should be very useful." Zhou Zhi said to Uncle Guan after reading Heheng's system design: "Thank you, Uncle Guan. I'll show it to Director Mai of the School of Computer Science. Maybe I can come up with a research direction."

(End of this chapter)