What to learn about java full stack

Recently there has been a heated discussion on the Internet about a rumor that Facebook is recruiting so-called "Full Stack Engineers", requiring applicants to have knowledge of every aspect of the development stack. mastered. So what exactly is a "full stack engineer"? Literally speaking, a full-stack engineer must be familiar with every level of the development stack, or at least be familiar with most of them and have a natural enthusiasm and interest in all software technologies.

For such developers, they are very good at using the technology they master to make their lives easier, which is why Facebook wants to hire them. They use their brains and passion to code, good products It can also be presented naturally in the shortest time. So, what qualities does a qualified "full stack engineer" have?

Development stack analysis

1. Server, network and hosting environment

You need to understand which modules may fail and why, and cannot take it for granted People believe that all problems can be solved by increasing resources.

Knowing how to use operating systems, cloud storage, network resources, and understanding data redundancy and availability is required.

Understand how the size of your application places limitations on hardware.

There are also multi-threading and race conditions. These concepts are often not encountered on development machines, but they are everywhere in real deployment environments.

Full stack engineers must also be able to work well with Devops. The systems they design should provide useful error messages and logging capabilities so that DevOps can obtain this information in a timely manner and take valuable actions.

2. Data Modeling

If the data model is flawed, then it is often necessary to use ugly code at the business logic and higher levels to make up for that data The model cannot cover the blind spots.

Know how to establish a reasonable normalized relationship model, with complete foreign keys, indexes, views, query tables, etc.

You must also be familiar with the storage of non-relational data and know in what ways non-relational databases surpass relational databases.

3. Business logic

This is the key to the value of system application.

Master SOLID design capabilities (single responsibility, open and closed, Liskov substitution, interface separation, dependency injection).

Familiar with some commonly used frameworks.

API/Action/MVC

These are about how the external world interacts with business logic and data models.

A large number of frameworks will be used.

Ability to write clear, consistent, and simple-to-use interfaces.

4. User interface

Full-stack engineers need to: a) know how to build easy-to-read layouts; b) be aware of the role of artists and graphic designers. In short, it is particularly critical to implement a good visual design solution.

Proficient in HTML5/CSS.

Judging from the current trends, JavaScript will be the star of tomorrow. Recently, this field has achieved fruitful results (NodeJs, backbone, knockout, Angular (my own addition, not in the original text)). Therefore, mastering JavaScript is essential.

5. User experience

Full stack engineers should realize that users just want everything to work well.

A good system will not make users suffer from carpal tunnel syndrome or eye fatigue. Full-stack engineers can look at the overall situation and simplify a process that requires 8 clicks and 3 steps into only one click.

Know how to prompt error messages to users. If something goes wrong, apologize sincerely. Sometimes some unintentional error messages can make users feel inexplicable.

Understand user and market needs

This layer is related to the system architecture, but it is by no means a role that cannot be touched (there may be an error in translation, original text: but that is too much of a hands off role).

Full stack engineers need to understand what customers need when using the software and what the entire market needs.

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