In what areas can docker be applied?

Some application scenarios of docker:

1. Simplified configuration

The biggest advantage of a virtual machine is that it can run various For different platforms (software, systems), Docker provides the same function while reducing additional overhead. It allows you to put the running environment and configuration into a code summary and then deploy it. The same Docker configuration can be deployed on different platforms. Used in the environment, this reduces the coupling between the hardware requirements and the application environment.

2. Code pipeline management

The code goes from the developer's machine to the final deployment in the production environment. , need to go through many backbone environments. Each intermediate environment has its own slight differences. Docker provides a consistent environment from development to launch for the application, making the code pipeline much simpler.

3. Improve development efficiency

The common goals of developers in different environments:

First, they want the development environment to be as close to the production environment as possible.

Second, they want to build it quickly Development environment

Machines in the development environment usually have relatively small memory. When using virtualization before, we often needed to add memory to the machine in the development environment. But now Docker can easily run dozens of services in Docker. .

4. Isolated applications

When developed, different applications will be run on one machine.

1. In order to reduce costs, perform server integration

2. Split a monolithic application into low-coupling single services (microservice architecture)

5. Integrate servers

Docker’s ability to isolate applications allows Docker to integrate multiple servers To reduce costs. Since there is no memory footprint of multiple operating systems and the ability to share unused memory between multiple instances, Docker can provide a better server integration solution than virtual machines.

6. Debugging capabilities

Docker provides a lot of tools, which are not necessarily just for containers, but are applicable to containers. They provide many functions, including being able to set checkpoints for containers, set versions, and view two containers. These features can help debug bugs.

7. Multi-tenant environment

In applications in multi-tenant environments, it can avoid the rewriting of key applications. One of our special An example of this scenario is to develop a fast, easy-to-use multi-tenant environment for loT (Internet of Things) applications. The basic code of this kind of multi-tenancy is very complex and difficult to handle. Re-planning for application not only consumes time, but also wastes money.

Using Docker, you can create isolated environments for multiple instances of each tenant's application layer. This is not only simple but also low-cost, because the Docker environment starts quickly and the diff command is very efficient.

8. Rapid deployment

Docker creates a container for the process, without starting an operating system, and the time is shortened to seconds.

Can create and destroy resources in the data center without worrying about restarting The overhead brought by it. Usually the resource utilization rate of the data center is only 30%. By using Docker and effective resource allocation, the resource utilization rate can be improved.

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