Riding the wind of rebirth

It was not a good day to talk, so Zhou Zhi changed the topic and asked Brother Lei about the origin of his car.

In the end, this matter was mainly due to Guan Ma.

Guan Dabin was formerly the deputy general manager of Heheng. He established a large supermarket in Shudu. In addition to airborne top leaders, financial management, and information system management personnel, he also relied on him for local supply organization, human resources management, and logistics and warehousing coordination.

Heheng Group and Jinli Group started to build chain supermarkets at Zhou Zhi's suggestion, so after training, Guan Dabin was picked up again and given important tasks.

Li Lehai and Jiang Wu took a word each from Heheng Supermarket and Red Star Chain and established a joint subsidiary called "Hengxing Supermarket United Group". They also exchanged equity and packaged Heheng Supermarket and Red Star Chain into a joint venture. A large supermarket complex.

This architecture itself is also very consistent with the star system. Large supermarkets like Heheng Supermarket are stars, and the medium-sized small supermarkets of Red Star Group are planets and satellites.

However, under the control of the supermarket information system, this galaxy can operate smoothly and orderly. The productivity and competitiveness improvements brought by information technology to the industry are extremely obvious. Therefore, the intellectual property rights of this galaxy were purchased by Clover Company and transformed and upgraded. The supermarket management system was also shamelessly renamed by Zhou Zhi - a well-known local name - "Star Supermarket Management System Version 1.0".

The word "super business" also changed its nature here and became the abbreviation of "super business", which also became a stellar system. The entire super business includes finance, customers, business, warehousing, logistics, human resources, intelligence analysis, statistics, and auditing. Each sub-module can run independently and has a unified interface to share information with other modules, thus building an "information flow network" that can fully support the operation of modern enterprises.

Because the system is not yet connected to the Internet, it is quite awkward to operate. The information processing of the system has to be carried out by employees from the information technology department who carry computers to various supermarkets to copy the data, and then process them in batches. After that, they carry the computers to various supermarkets. The pattern of distribution of updated data for large and small supermarkets.

However, Zhou Zhi insisted that the system be designed in this way. At the same time, in terms of architectural model, he abandoned the pure CS model that is quite popular today, and resolutely adopted the BS and CS mixed model to build the system, and required the system to be as de-CS as possible.

The so-called BS and CS architectures are actually two common software architecture design patterns.

The BS architecture, Browser/Server Architecture, is based on communication between the browser and the server. The logic and data of the application are stored on the server, while the client only uses the browser to request data and interact with each other through the network.

The CS architecture, that is, Client/Server Architecture, is based on the communication between the client and the server, storing the application logic and data on the server, while the client uses the terminal device to run a part of the program code to process data and Interactive operations.

In fact, both architectures have their own pros and cons. Which one is better or worse mainly depends on the application environment.

The benefits of BS mode are self-evident. All programs and data are concentrated on the S side, which can achieve unified maintenance and unified management. The data synchronization is single and superior. The client does not need to upgrade or purchase special equipment. It only needs a computer with The browser's computer can handle the transaction.

The disadvantage is that the speed requirements for the network and server are high, and a large amount of data needs to be obtained from the server in real time through the browser and also needs to be fed back in real time. The huge amount of information exchange data often causes network and system congestion, or even system failure. paralysis.

The benefit of the CS mode is the other way around, because some services are processed locally, and only information that needs to be communicated will be uploaded to or downloaded from the S side. It can also undertake a considerable part of the local computing work, which is critical to the network and central Server requirements are much smaller.

But the problem is that each C-side needs to install a set of C-side service programs, and the computer performance required by each C-side is much higher than the performance of the terminal in BS mode.The biggest problem is not the cost, but the unity with the system, the uniqueness of the data, and the complexity of management.

Once the system needs to be upgraded, all C-sides must be upgraded simultaneously, which is a huge workload.

In addition, data, programs, and servers are all distributed, which can easily lead to inconsistent versions of the C-side and S-side systems, and differences in data between the two places. The system is small and the data is simple, which is easy to handle. If the system and data volume are very large, If so, it can easily cause huge troubles to information management work, and even cause the system and data to be non-backupable and unrecoverable due to program version differences and data differences at time nodes, which is quite fatal.

To give a simple example, in BS mode, data backup is very simple, because the data is only on the S side. You only need to select a time period and back up the current data to complete the risk prevention work.

However, when switching to CS mode, data backup becomes troublesome. A backup mechanism needs to be equipped for both the S side and the C side, and the backup time point must be set uniformly, so that the backed up system can restore the entire system to that time point. superior.

However, the cost of system backup equipment also needs to be considered, so it is usually only done on the S side. Due to the inherent limitations of the CS system, when the S side is backing up, the C side continues to run, so this part of the new data will never be able to enter. In the backup data of S side.

There will always be data differences between the S end and each C end, and these differences can never be backed up.

Then when doing data recovery, you will find that no matter which point in time the backup is restored, there will be some missing data on each C-side. The system can no longer restore a historical state where all C-sides and S-sides completely match the same historical state. At this point in time, this results in partial non-traceability of the system.

In many scenes, such non-traceability is not serious. However, for some scenes, non-traceability can easily cause management traps, giving people an excellent opportunity to commit crimes freely and completely destroy the evidence.

For finance and financial work, data cannot be trusted or traced, which will be fatal.

However, in today's system design work, due to the limitations of the network, the development of the BS mode has been completely restricted. Therefore, everyone mainly adopts the CS mode to design systems, and because today's systems are relatively "small", the CS mode is still used. Very convenient.

However, the trap is hidden in the word "smooth". When development continues, countless technology companies will find that they must tear down their entire systems and rebuild them. By that time, they will even find that the system has become so large that once it is rebuilt, The design cost will be too high for enterprises to bear.

If a ship is in danger of turning around, it is better to allow its design to develop and be sustainable from the time it is still a small boat.This is a profound lesson Zhou Zhi learned from the fate of the Chinese character library in another life.

In short, with the help of this set of "artifacts", enterprise management has become relatively easy, so the enterprise's focus has shifted even more to Guan Dabin, and promotion and reuse are all part of the problem.

Now that there is a husband who is a talkative businessman in Shudu, the opportunity to Guan Ma has come.