How does cloud computing achieve elastic scaling? What are the characteristics of elasticity?

Cloud computing is now a necessary installation system for many enterprises , With the rapid development of the Internet , Cloud computing is also required to be elastic and scalable . How can cloud computing achieve elastic scaling ？ Stretch and stretch What are the characteristics of ？ Let's take a look at the following explanation .

How cloud computing achieves elastic scaling

There are two types of elastic scaling in cloud computing , One is horizontal elastic expansion , One is longitudinal elastic expansion . Lateral elastic expansion by increasing ECS resources , When resources are consolidated , As a whole, the external services of Cloud Computing . such as , One server is not enough , Will be added to two , Three stations , Until it is enough , Then integrate these into an overall architectural pattern . The extensibility of this architecture pattern is very strong . And the longitudinal elastic expansion is achieved through ECS It is realized by adding configuration to resources , For example, add to the existing virtual machine CPU, Configuration of memory, etc . There are limits due to the increase of configuration , Therefore, the scalability is also limited .

What are the characteristics of elasticity

1、 Can be predicted manually , Automatically set the time period that needs to be scaled , Achieve automatic elastic scaling at this time of day or week .

2、 In the case of artificial unpredictability , Intelligent elastic scaling can be realized according to load conditions . It is generally used in the case of uncertain load of live broadcast websites .

3、 When the ECS fails to work properly , It can automatically repair or replace the currently working ECS according to the situation , Realize the feature of automatic troubleshooting .

4、 After setting the elastic expansion , There is no need for manual intervention , Just focus on the situation . Both cost savings , It also improves work efficiency .

How cloud computing achieves elastic scaling ？ Through the combination of horizontal and vertical elastic expansion , Realize the elastic scaling of cloud computing . meanwhile , Through elastic scaling, the system utilization of cloud computing can be optimized , It also avoids the waste of resources .