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[Illustrated] Part 03: 3 Benefits of Docker Development [Docker Introduction]
Benefits of Docker Development
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Created by NekoAllergy
Introduction
Hello everyone.
In the previous article, I introduced the basics of server virtualization and the three different methods.
Previous Content
Among the three, "container-based server virtualization" is attracting the most attention. Container-based virtualization is used in Docker and is an incredibly convenient technology that every developer uses.
Introducing the Benefits
In this article, we will dive a little deeper into container-based server virtualization and introduce three of its benefits. It might seem like a difficult topic, but I will explain it using everyday examples so that even beginners can understand it.
By the end of this article, you will have a better understanding of the appeal of Docker.
Three Benefits
The benefits of developing with container-based server virtualization—in other words, Docker—include the following:
Introducing Three Benefits
- Managing features collectively
- Lightweight and fast
- Stable and portable environments
These terms might sound difficult, but don't worry, I will explain them one by one.
1. Managing Features Collectively
Benefit 1: Managing features collectively
The apps you use every day, like YouTube or Netflix, have many features.
For example, there's the login feature, user authentication, determining what content to display on the screen, video playback, and many other processes.
Program Bloat...
When the program grows larger and larger, it becomes difficult to understand what is located where.
This can lead to increased development time and unexpected bugs, making management very challenging.
By using Docker containers...
By using container technology like Docker, we can resolve this issue.
For example, we can split features like the web page UI display, user authentication, and email sending into separate containers.
This improves visibility and makes it easier to manage, allowing for smoother development.
That covers the first benefit, "Managing features collectively."
2. Lightweight and Fast
Benefit 2: Lightweight and Fast
Next, let's explain how Docker is "lightweight and fast."
Size is Important
In the development of applications and software, program capacity is very important. For example, if you have code that uses 100MB just to perform one process, the processing and development speed will slow down, making it really tough.
In that regard, by using container-based server virtualization, you can keep the size small compared to other methods.
To make it easier to understand, let's compare the case of executing all processes on one computer and the case of using Docker containers.
Is a Container a "Share House"?
For example, if we consider one computer to be a "private room," container-based virtualization is like a "share house." Each room is independent, but everyone living there can share the kitchen and living room. Therefore, not everyone needs to have their own kitchen or living room.
Lightweight Through Sharing
Similarly, each container shares essential systems such as the OS. Since individual containers do not need to have the entire system, the whole setup becomes lighter. This makes it possible to perform more tasks simultaneously on a single PC.
Also, because each container is lightweight, starting and stopping them can be done quickly.
Speedy Start/Stop
This is just like how smartphone apps open quickly. Apps open immediately and can be closed right away when not needed. This is a great feature of container-based virtualization, allowing for rapid starting, stopping, and updating of applications.
That covers the second benefit, "Lightweight and Fast."
3. Stable and Portable Environments
Benefit 3: Stable and Portable Environments
Next, let's look at the third benefit: "Stable and Portable Environments."
Moving Containers to Other Environments
In Docker, a single feature or app is stored and managed within a container. Containers created this way can be moved freely and will work the same way in other environments.
Same Conditions, Same Results
This is like Starbucks, where you can drink the same coffee anywhere. At Starbucks, even if the store is different, they use the same machine, the same ingredients, and the same manual to make coffee, so you can enjoy delicious coffee everywhere.
Running the Same Way with Containers
Similarly, by using Docker containers, you can easily move applications. Containers work the same way on any OS. Therefore, you can run the same application in the same way across development, testing, and production environments. This prevents confusion like "It works on my machine, but not in production!"
Summary
Now, let's summarize today's content.
In this article, we introduced the "Benefits of Container-Based Server Virtualization."
Summary
Container-based server virtualization offers three major benefits:
- Managing features collectively
- Lightweight and fast
- Stable and portable environments
By using Docker, you can increase development flexibility, speed up updates, and create an environment where a single issue is less likely to affect the entire system.
These benefits make it a very useful tool when creating new services or improving work efficiency.
That's all for this article. I'd be happy if this helped advance your understanding even just a little.
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I usually post about machine learning on YouTube. I'd be happy if you could take a look if you have time.
Created by NekoAllergy
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