What is backend development? The role of back-end development and the technologies that need to be learned

Preface：What is back-end development? What does back-end development mainly do? What do you need to learn about back-end development? GeneralA normal WEB development is generally divided into front-end development and back-end development! Front-end development is mainly a static user interface plus some dynamic effects, and does not involve data logic! For example: a login page: Front-end development only needs to complete the static page part, plus the color change when the mouse moves into and out of the input box; (please refer to the previous article: What is web front-end development? 2017 Prospects for front-end engineers ) However, if you enter the user name and password to log in to the system, you need to connect to the database, which requires back-end development for logical processing! So today php Chinese website will introduce to you in detail what back-end development is!

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Software applications are like icebergs. The user only sees a portion of the application - and in most cases - the largest part of the application is invisible. This is the elusive and mysterious "back end."

In the chapter on web development, we mainly discuss web development because it involves direct interaction with end users - we can call it "front-end web development".

In most applications, there is much more non-user interface code than user interface code. A complex system is all the logic that happens in the background to make it work.

We need to store and retrieve data, we need to follow business logic and rules, and we need to predict the results. All of this happens behind the scenes.

Backend developers are such developers.

What exactly is backend development?

The purpose of this article is that I will consider backend development as a development that does not involve creating and generating user interfaces . This may include backend web development, but may also involve writing APIs, creating libraries or working with system components without a user interface or even a scientific programming system.

In reality, even though front-end development gets most of the glory, most of the code that exists in the world (arguably the most useful code) is that end users never You won't see the backend code.

Simply put, back-end development is code written by developers that cannot be directly seen.

What does a backend developer mainly do?

What a backend developer does varies greatly depending on the size and scope of the application they are working on. . When I was a backend developer, I did a lot of work on business logic in applications, as well as extracting and retrieving data from the frontend.

In the web development world, most backend developers are engaged in building the actual logic behind the applications they are working on.

Typically, front-end developers build the user interface, while back-end developers write the code to make it work.

For example, a front-end developer creates an interface in an application with a button that can be pressed to get the customer's data.

The backend developer writes the code that makes the button work by indicating what data to pull from the database and pass it back to the frontend (and ultimately display it there).

Backend developers may also be heavily involved in system architecture, deciding how to organize the system's logic so that it can be maintained and operated properly.

He may be involved in building a framework or system architecture to make it easier to program. Backend developers spend more time implementing algorithms and solving problems than frontend developers.

I have always liked back-end development work because it is more of a challenge.

This is not to say that front-end developers don't solve hard problems, but often front-end development jobs are more about creating the user interface and the content associated with it than implementing the actual business logic that makes the application work.

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What do you need to learn for back-end development? (Major Technologies and Skills in Back-End Development)

Front-end developers need to know a range of tools for creating user interfaces, while back-end developers typically use an entirely different set Tools and skills to do their jobs efficiently.

One of the important skills needed for backend developers relates to SQL and databases. Most backend systems require a connection to the database where the application data is stored.

Backend developers usually work on writing, reading, and processing data from a database or other data source, so having skills such as SQL is very important. Backend developers - at least for web development - also need to be good at the server-side languages ​​of the technology stack they are using.

For example, while front-end web developers focus more on HTML, CSS, and JavaScript, back-end developers need to know more about PHP web frameworks, Ruby on Rails, ASP.NET MVC or whatever is being used Server-side web development framework for building applications. Related tutorial topic recommendations: php self-study tutorial from entry to proficiency

Finally, I want to say that back-end developers need to know more about application architecture, because Most of the time, backend developers are required to build the architecture and internal design of the application.

A good backend developer knows how to use various frameworks and libraries, how to integrate them into an application, and how to structure code and business logic in a way that makes the system easier to maintain. .

If you enjoy designing application infrastructure, implementing algorithms and logic, and working with data, then you may enjoy becoming a backend developer.

Extended knowledge

About full stack developers?

What is full stack development? Please refer to: How to become an excellent full-stack engineer by self-study?

#In fact, full-stack development involves handling all components and layers of a system or software development stack. It might even involve understanding server hardware and architecture, or being considered DevOps.

Today, more and more software development positions are looking for developers who can do full-stack development, because it is valuable for software developers to be able to work on the entire technology stack involved, not Separate front-end development and back-end development.

Part of the reason is that more and more applications are blurring the lines between front-end and back-end development.

Many popular JavaScript frameworks, such as Angular, allow you to create much of what can be considered business logic in the user interface portion of the system.

Additionally, as more and more teams adopt agile methods, individual programmers are required to work in more than just their areas of expertise, as tasks are assigned to teams far more than to individuals.

I think being a full-stack developer is useful - and that you should fully understand what is going on at every level of the software - but I don't think being a "specialized" full-stack developer is the best idea, since this is not a professional field.

Basically, you should focus on gaining broad knowledge of the most common technology stacks you are likely to use, but you should pick one or two major specializations and then really go in the direction of your choice Delve deeper.

All software developers should know how to create user interfaces, the basics of the frameworks used, how to store and retrieve data from the database in the application, and even understand how the infrastructure supports the software, they do not need to be Experts in all of these fields, because these fields are not only quite large but also growing.

It may be much better to have all the knowledge that is common and valid in the technology stack or to have specialized knowledge in some areas.

Then, you can still call yourself "full stack", but in reality, talents like you are much more useful to the team.

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