Shulou(Shulou.com)06/03 Report--

What are the characteristics of Docker? In view of this problem, today the editor summarizes this article about the characteristics of Docker, hoping to help more friends who want to solve this problem to find a more simple and feasible way.

Six characteristics of Docker

1. Make more efficient use of system resources

Docker has a higher utilization rate of system resources, and it is more efficient than traditional virtual machine technology in terms of application execution speed, memory consumption or file storage speed. Therefore, compared with virtual machine technology, a host with the same configuration can often run more applications.

2. Faster startup time

The traditional virtual machine technology often takes several minutes to start the application service, but the docker container application runs directly in the host kernel without starting the complete operating system, so it can achieve seconds or even milliseconds startup time, which greatly saves the time of development, testing and deployment.

3. Consistent operating environment

A common problem in the development process is the problem of environmental consistency. Due to the inconsistency among the development environment, the test environment and the production environment, some bug are not found in the development process. On the other hand, docker's image provides a complete runtime environment other than the kernel, ensuring that the environment is consistent, so that there are no problems like "this code is fine on my machine."

4. Continuous payment and deployment

For developers and operators, the best hope is to create and deploy at once, which can be run anywhere. Customize application images for integration, continuous payment, and deployment. Developers can build the image through dockerfile and conduct integration testing with the continuous integration system, while operators can quickly deploy the image directly in the production environment, or even deploy automatically with the continuous deployment system). And using dockerfile to make the construction of the image transparent, not only can the development team understand the application running environment, but also facilitate the operation and maintenance team to understand the conditions needed for the application to run, and help deploy the image in a better production environment.

5. Easier migration

Because docker ensures the consistency of the execution environment, it makes the migration of applications easier. Docker can run on many platforms, whether it's physical machines, virtual machines, public clouds, private clouds, or even laptops, with consistent results. Therefore, users can easily migrate applications running on one platform to another without having to worry about the changes in the running environment that lead to the application not running properly.

6. Easier maintenance and expansion

The hierarchical storage and mirroring technology used by docker make it easier to reuse the repeated parts, make it easier to maintain and update the application, and make it very easy to further expand the image based on the basic image. In addition, the docker team, together with various open source project teams, has maintained a large number of high-quality official website images, which can not only be used directly in the production environment, but also can be further customized as a basis, greatly reducing the image production cost of application services.

After reading the above, do you have any further understanding of docker? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel. Thank you for reading.

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