Beijing Open Source Linux operation and maintenance combat

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The above architecture diagram, presumably everyone has seen, basically can read. What can we think of with a picture? What is there to think of, not just a picture? Indeed, just a picture, once upon a while, I was so naïve to think. Feel nothing, is a map of the site that everyone can read. After many years, suddenly have a new understanding of this figure, new understanding.

When you first enter the line, what kind of scene will you use to learn the various techniques? When you interview, do you have a similar picture in your mind? When you learn or discover a new technology, which layer do you want to use? When you face your little brother, big talk about the technical structure of the Web site when the logic, whether there is a microcosm of this diagram.

The usefulness of this figure is now clear, right? At work, I often talk to colleagues or friends who ask me questions and tell him/her to pass through a picture of what he has learned. See this picture, you can learn what you know, the application of the ease.

And my understanding of this figure, I feel that the most useful is just the beginning of the study of younger brother or sister. At the beginning of the student movement, all start from a single machine, with the gradual deepening of technical mastery. The figures in your mind/pictures on your books should also be expanded to extend to the diagram at the beginning of this article, or beyond. What do you mean?

During the first phase of the study, Apache/nginx+php/java+mysql was installed on a single machine.
The second stage of learning, Apache/nginx+php/java on one stage, mysq on the other, carrying more concurrency.
The third stage of learning, need to introduce load balancer equipment, LVS One, Apache/nginx+php/java two or more, MySQL master and slave each one
Phase IV study, go to a single point, all high availability, pass.


In the interview, the role of this figure is not negligible, the interviewer's most questions are based on a scene. As a candidate, are you also based on a scene when you answer questions, where is the scene? It is in your usual accumulation, usually prepare a good picture, in order to winning thousands.

Only to the understanding of a picture and the role in learning and work, do a simple description, description is not in place, but also please my colleagues, thank you!

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Beijing Open Source Linux operation and maintenance combat