Don't know how to choose Alibaba Cloud ECS server? Take a look at this article on Alibaba Cloud Server ECS Tips

Cloud as a Service (Elastic Compute Service, referred to as ECS) is a simple and efficient, flexible and scalable computing service that helps users quickly build more stable and secure applications, improve operation and maintenance efficiency, reduce IT costs, and encourage users to focus more on core business innovation

Alibaba Cloud ECS not only has computing instances, storage and network components for enterprise scenarios, making the application run stably, data storage reliable, with rich security protection and monitoring measures, but also can use a variety of management methods, giving full management rights, rich image types, to accelerate application deployment. Here are some questions about Alibaba Cloud ECS, hoping to help you better choose and use Alibaba Cloud ECS Cloud as a Service.

(Alibaba Cloud Enterprise High Performance Cloud as a Service, click to view the configuration)

First, how to choose an ECS instance suitable for the user's business

First of all, the configuration selection of Cloud as a Service ECS is related to factors such as the type of application to be deployed, the amount of visits, the amount of data, and the quality of the program. Users need to choose the most suitable configuration according to their own business type.

When the initial stage of the website traffic is small, users can choose a low-configuration server, and all resources such as applications, databases, files, etc. can be placed on one server. Later, with the growth of the business, users can also increase the server's CPU, memory, hard disk and bandwidth configuration online at any time, or increase the number of servers, without worrying about the shortage of resources caused by low-configuration servers when business suddenly increases, so that no user churns. Of course, this is all due to the strong elastic expansion and fast provisioning capabilities of Alibaba Cloud servers.

When the user's business needs are high, you can choose a high-configuration server, or use multiple slightly low-configuration servers, with load balancing services, expand the external service capabilities of the application system through traffic delivery, and improve the availability of the application system by eliminating single points of failure.

How to choose between monthly subscription and pay-as-you-go

At present, with the rapid development of ECS Cloud as a Service, the amount of pay-per-use Cloud as a Service continues to increase. Here is a simple sharing of how to choose between monthly subscription and pay-per-use models.

In fact, the choice of the two methods is basically to see the user request, if it is only a temporary project, it is recommended that users open pay-as-you-go, mainly:

1. The monthly subscription payment model is more economical for applications that require 7X24 uninterrupted, but if the user's application peaks and valleys are more obvious, then using the monthly subscription instance is obviously not a good way.? For example, a user has a game application, which peaks from 20:00 to 21:00 every day, and the traffic reaches three times that of other time periods. It requires 30 instances of ecs.m1.medium to process, while other time periods only need 10 units to handle the traffic. In this case, the best way is to buy 10 monthly subscription instances, and at the same time use the API or official website to automatically start 20 instances of pay-per-amount before 20:00 every day, and automatically release them after 21:00, which is the most economical way.

2. In addition to being used to deal with sudden or peak application requirements, pay-per-use is also very suitable for applications that do not have a fixed usage time (such as less than two weeks of use in a month). For example, a scientific research project may only need to run one week of model calculations a month. At this time, it is more economical to use pay-per-use instances.

III. How to improve the security of ECS instances

The ECS instance is placed on the cloud, in addition to being placed on Alibaba Cloud's own security platform, it also requires users to further customize the security according to actual needs, so the security of ECS is jointly built by Alibaba Cloud and users. If the ECS instance is not protected securely, it may have adverse effects, such as being subject to DDoS attacks that cause user business interruption, web pages are tampered with due to web intrusion, and information and data leakage due to injection, which in turn affects the use of ECS and makes it impossible to provide services normally. Therefore, users need to set up security groups, AntiDDoS, situational awareness, install Anknight, and access web application firewalls in advance to improve the security of ECS instances.

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