What are the benefits of Docker?

#What are the benefits of Docker?

1. Lightweight and low consumption

Using Docker can combine multiple services to reduce costs, not much operating system memory footprint and sharing multiple free memories across instances. These technologies allow Docker to provide more effective service consolidation with tighter resources.

2. Based on the lightweight features of LXC, it starts quickly, and docker can only load the changed parts of each container, so it takes up less resources. Compared with virtualization solutions such as KVM in a stand-alone environment, Can be faster and consume less resources.

3. High utilization and isolation

Container service does not have the additional overhead of a hypervisor and shares the operating system with the underlying layer, resulting in better performance and lower system load. More instances can be run under the same conditions to fully utilize system resources. At the same time, containers have good resource isolation and restriction capabilities, and can accurately allocate CPU, memory and other resources to applications, ensuring that applications will not affect each other.

4. Rapid deployment and microservices

Docker creates process containers without restarting the operating system. It can be shut down in a few seconds. You can create or destroy resources in the data center. , don’t worry about extra consumption. Docker provides lightweight virtualization. You can get an additional abstraction layer from Docker and be able to run multiple Docker microcontainers on a single machine, and each microcontainer has a microservice or independent application.

5. Standardized environment and control

Based on the environmental consistency and standardization provided by the container, you can use tools such as Gt to perform version control on the container image. Compared with code-based version control, version control can also be implemented for the entire application running environment, and it can be quickly rolled back once a failure occurs. Compared with virtual machine images, container compression and backup are faster, and image startup is as fast as starting an ordinary process.

Recommended tutorial: "Docker"

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