Do you still remember the Weimob " deleting library and running away " incident at the beginning of this year ?
1
Delete library impulsively
The Weimob database deletion incident may be one of the most serious accidents in China. It directly caused a loss of nearly 1 billion in the company's market value that day and affected more than 3 million merchants.
The detailed process of the incident was sorted out for everyone at that time. Friends who don’t know the passage can repurchase again: "The founder responded, the employee deleted the library and ran away, and the company's market value plummeted by 1 billion! 》
The method of deleting the library was not a simple command such as Delete form or Drop table.
Instead, I used the file deletion command under the Linux system (suspected to be using rm), which made programmers frightened , and the whole was deleted irreversibly.
We often ridicule the deletion of the library and the incident, but we did not expect it to happen in a listed company.
2
Emergency repair
Deleting data or tables may be restored through database logs. If the database server is killed directly, and the data backup is not done...
This level of data recovery cannot be done by ordinary programmers.
At that time, Weimob itself was confused. Fortunately, they used Tencent Cloud, so the entire Tencent Cloud also attached great importance to this matter and recruited top domestic technical talents to help.
The final recovery plan is to abandon the data recovery on the database server, start directly from the hard disk of the database backup server, and try to recover the data.
Data center hardware engineer
Finally, after 7 days and 7 nights, all the data was finally rescued. I strongly recommend that you read Tencent Cloud's review article: " Seven days and seven nights after the deletion of Weimob data" .
It can be said to be a textbook-like operation on the Chinese Internet, which is of great significance to technical people.
After the data was restored, Weimob assessed the losses of the merchants on the platform and compensated the corresponding merchants. The incident came to an end, and until today the programmer was sentenced.
3
Sentenced to 6 years
Everyone is an adult, and everyone is responsible for their actions.
The criminal judgment (first instance) of the Baoshan District People's Court of Shanghai (Judgment announced on August 26) is excerpted as follows:
At around 18:56 on February 23, 2020, He Mou was connected by a computer in his temporary residence at Room XXX, Lane XXX, Yixian Road, Baoshan District, Shanghai due to personal reasons such as unsatisfactory life after drinking and unable to repay his online loan. The company's virtual private network, after logging in to the company's server, executes the deletion task to delete all data in the Weimeng server .
As a result, Weimob was paralyzed since 19:00 on February 23, 2020, and more than 3 million users (including more than 70,000 paying users) could not use the company’s SaaS products normally. After emergency repairs, they resumed operations at 9:00 on March 3 ( time of failure) 8 days and 14 hours ).
As of April 30, 2020, Weimob has caused a total of more than 22.6 million yuan in economic losses such as payment of data restoration service fees, merchant compensation and employee overtime compensation .
He was sentenced to six years in prison for the crime of destroying computer information systems.
4
At last
The case of Weimob has reminded many companies that the safe backup of data and the isolation of permissions are the line of life and death for a company.
There will be many inevitability behind accidents. I believe that until now, there are still many companies whose authority management is not in place, and the disaster recovery plan is decoration.
However, the significance of the warning is self-evident. After the Weimob incident, many powerful companies moved and reorganized the company's process and authority management.
At least I saw several by my side.
For this programmer, more than 6 years, the golden stage of the workplace has passed, and it is very likely that he will leave the industry forever.
Seeing several keywords in the trial book: unhappy , online loans , and being expelled from the company , many factors have led to an extreme person.
Here, I especially advise those who have unsatisfactory lives, never go to online loans , he can only make your life worse.
I don't know how many people are actually harmed by online loans. I am extremely disapproved of this matter. If you have anything to do, stay away from online loans, cherish your life, and stay away from online loans!
<Recommendation at the end of the article>
Finally, I recommend an open source project of Niu X: a free programming Chinese book index, that is, the author has collected all free computer Chinese books on the Internet .
I just saw that there are more than 70,000 people Star and more than 20,000 people Fork on Github. Most of the books are recommended by stackoverflow and github.
I can share the catalog with you, most of which can be read online.
I probably flipped through it. Basically, they are relatively classic computing books, covering a wide range of topics, from operating systems, computer basics, and programming languages.
Old rules, interested friends, get the address of the open source project, follow the public number below and reply [313]
Identify the QR code below, and reply after following【313】
To get the resource link