with DIdi's 21 million cars driving data in real-time, we can optimize the traffic with improvement in traffic lights system

companies with more users gather more data, offer better products, and so on

companies need to improve IT data processing capabilities

what is cloud computing: model of network access to computing resources with minimal mgt effort.

• models: private cloud, community cloud, public cloud, hybrid cloud
• service models: Software as a Service, Platform as a Service, Infrastructure as a Service

Too much stucking, am using too much time to learn because the video are stucking 

thomas watson: wrong prediction

Moore's law : correct prediction

Gordon Bell law : correct prediction

Unpredictable Workloads cause the resource provisioning problems. 

Hi

Bin shi laoshi is very nicee :)

Feb 4th, servers stop

fixes very soon

WHy?

Because of cloud computig, elastic usage

Big data

machine learning

first time : 1960

second time : 1995-2005 Grid Computing

third time : 2008-present : cloudcomputing

data center got smaller and smaller now or not still dependent on those large data centers in sea and equatic destroying enviornment and increasing global warming?? I mean if there is wireless data technology, is there any wireless data center or virtual data center at present?

virtual machine concept windows linux combined together on VM

still primary user needs a real machine in hand like mobile phone to access Virtual datacenter

every 15years

The relationship btw Clouyd and AI

• AI services is deployed on Cloud​​​Cloud data center is where many cloud servers are centralized.

"Utility Computing" is always a dream

• Several attempts at utility computing in history
• First time: 1960s: Multics (Bell labs, MIT)
• Network and terminal equipment become bottlenecks
• Sec time: 1995-2005: Grid Computing
• Third time: 2008-now: Cloud Computing.

First and second computing failed, the third compouting which is cloud computing succeeded.

Why???

Becsuse the maaturity of virtualization technology is the key.

IBM: IT 15 years cycle perspective

Former IBM CEO Louis Gerstner believes that Computing model changes every 15years

Online Shopping

One day transaction data

• 660 million active user's
• 268.4 billion RMB

Peak performance of 11.11 systems

• peak order creation per sec: 544,000
• Peak real-time computing processing speed: 2.551 billion
• Data processing volume: 982 PB(1 day)

Smart Transportation

Didi has 21 million cars driving data in real-time 

• planning the optimal route​​​​​​​
• Improve traffic lights
• Respond to the user's car request

From the Quarantine to Cloud Computing

Bin Shi

Email: shibin@xjtu.edu.cn. Xi'an Jiaotong Uni.

Online Class data in China 

Before the pandemic outbreak:

• users: 135 million
• Active users: 87million

Now  during the pandemic outbreak:

• Users: near 400 million
• Active Users: 203 million

​​​​​​​Cloud computing has elastic feature, on demand usage, etc.