Online classes crash, online teaching drops
Last year, due to the epidemic, the state regulations postponed the start of primary and secondary schools, and at the same time called on local schools to “suspend classes without suspension”. On February 10, 2020, online live classes of primary and secondary schools in Wuhan, Xiangyang, Nanchang, Shenzhen, Foshan, Kunming and other places will be launched. When hundreds of millions of students poured in, many live broadcast platforms experienced varying degrees of stuttering or even "crash".
Due to the continuous development of the epidemic, the Ministry of Education recently issued the "Notice on the Postponement of the Spring Semester of 2020", requesting the Ministry of Higher Education, local colleges, primary and secondary schools, and kindergartens to appropriately postpone the start of the spring semester. At the same time, offline training activities have been suspended in many places, and the Internet and informatized educational resources have been used to provide students with learning support, "stopping classes without stopping teaching, and closing classes without stopping school."
The server crashed on the first day of the live broadcast
At present, there are about 270 million students in school in our country. When hundreds of millions of students flock to the live broadcast platform, a big challenge will follow.
At 8 o'clock in the morning on February 10, 2020, schools across the country started intensively. According to reports, the number of online classes exceeded 200 million, which caused overall pressure overload on Ali, Huawei, and Tencent cloud servers. Almost all live broadcast platforms across the country are temporarily unable to operate normally due to these three platform servers.
Ali server crashes
Prior to the first day after the holiday, the online education platform Yuandaodao had experienced a server crash.
On February 3, 2020, some netizens reported that Yuanjiao had collapsed. Subsequently, the staff of Yuan Guidance issued a notice saying:
Due to the large number of students attending classes, more than 5 million people attend classes at the same time, causing server overload, and the entire day of the course was postponed for one day.
According to netizens’ responses, many teachers suddenly experienced interruptions and black screens when they were using Dingding Live to teach classes this morning, which was suspected of server failure. Then at 11:43, Dingding said on the official Weibo: "I did not expect to fall down until the end."
However, Dingding’s failure did not last long. At 12:45, Dingding sent another Weibo: “It’s full of blood and resurrected.” Coincidentally, not long after Dingding’s collapse, Taobao also collapsed.
Taobao crashes
"Server crash", this has almost become a must-have every year on Double Eleven. Except for the collapse of Double Eleven and Double Twelve Taobao.
According to media reports, some netizens reported that it was very slow to refresh when browsing goods or placing orders on Taobao this morning. Some users’ pages would prompt "The front is crowded, please try again later", "The second is busy and the system is tired, please Try again later" or "An error occurred on the server", and ultimately unable to purchase the product.
In this regard, Taobao’s official Weibo said on the afternoon of the 10th: “I feel the enthusiasm of everyone's hands, and the heart is not broken, everything will be fine! The love for Taobao will be stronger. We are ready!
Netizens also left messages "Thank you for being with your good brother Ding Ding" and "It will save us money."
The future trend of the Internet
Today we cannot do without the Internet. The Internet has penetrated into all aspects of our lives, but with the development of society, our current Internet has gradually revealed its drawbacks.
The current Internet is a centralized storage, and its drawbacks are mainly in these aspects: privacy leakage, poor server security, risk of termination of operation, and censorship.
However, based on the current Internet centralized storage, there have been a lot of drawbacks. It is actually very difficult to continue to improve the reliability of centralized storage, and the cost will rise sharply. For example, the "two places and three centers" for disaster recovery, the cost is easy Tens of millions.
A better way is to decentralize, turning data from one center into many centers, even tens of thousands, hundreds of thousands, and tens of millions of centers (storage nodes) in the world.
And these data storage centers are separated from each other, we call the fault domain separated. In other words, failure in one place will not cause failure in another place. This is why storage needs to be decentralized.
As soon as the concept of decentralized storage was put forward, it received a positive response from the industry, because according to the application of decentralized storage technology, decentralized storage using blockchain technology can ensure that our data has sufficient backup by algorithms. , And stored in several nodes of the system in a distributed and encrypted manner.