Introduction to Cloud Computing Basics

Why is big data growing so fast?

1. Changes in the way data is generated

2. Human activities are increasingly dependent on data

What is big data?

Massive data or huge amounts of data, whose scale is too large to be acquired, stored, managed, processed and refined by current mainstream computer systems within a reasonable time to help users make decisions

4 V + 1 C ：Value Volume Velocity Variety Complexity

Big data is the demand, cloud computing is the means G = f (X) G = our goal f = cloud computing X = big data

Why is cloud computing called "cloud"?

No fixed structure, ever-changing application modes

Elastic Application Cloud Proposed by Amazon

dynamic scalability

Cloud Computing Features

Hyperscale: many servers

Virtualization: any user terminal requests any demand anywhere

High reliability: multi-copy fault tolerance mechanism, node isomorphism

Versatility: various applications can be supported under cloud computing

High scalability: cloud computing can be dynamically scaled

On-demand service: users can purchase on-demand

Extremely cheap: a relatively efficient fault-tolerant mechanism forms a resource pool, and its versatility leads to a substantial increase in the utilization rate of the resource pool. Cloud facilities can be deployed in places with abundant water and power resources, reducing power costs, heat dissipation costs, and management costs

Cloud Computing Classification

Software-level services:SaaS

Platform-level services:PasS

Infrastructure-level services:IaaS

Computing resources, storage resources, bandwidth resources

Cloud Computing Implementation Mechanism

construction layer

Management middleware layer: resource management, task management, user management, security management

resource pool layer

physical resource layer

Advantages of cloud computing

In terms of utilization:

The data utilization rate of traditional data centers is 10%-15%, while cloud computing can reach 80% utilization rate. Provide flexible functions, configure as many as you need

In terms of cost: electricity and production costs

​ Managing Costs: Automated Management

​ System purchase cost: hardware cost

homework

How did the phenomenon of big data form?

What are the implications of the new Moore's Law?

What are the characteristics of cloud computing?

What types of services can cloud computing be divided into?

What are the layers of cloud computing technology architecture?

Why does cloud computing have an overwhelming advantage over traditional technologies in terms of cost performance?