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How do you design a deployable web app with reusable, testable code?

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Web applications are software programs that run on web browsers and servers, and provide users with interactive and dynamic features. To design a web app that can be easily deployed, maintained, and updated, you need to write reusable and testable code that follows some best practices and principles. In this article, you will learn how to do that by following six steps.

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1 Define the scope

The first step is to define the scope of your web app, which means what it will do, who it will serve, and how it will interact with other systems. The scope will help you decide what technologies, frameworks, and tools you need to use, and what features and functionalities you need to implement. You can use tools like user stories, wireframes, and mockups to visualize and document your scope.

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Eliezer Rivera

Full Stack Developer | Expert with Angular, Ionic, NodeJS, Typescript, JavaScript, C#, . Net, Firebase, MongoDB, SQL Server | Industrial Automation Programmer | Intermediate in React and VueJS
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The article offers valuable insights into the critical process of defining a web application's scope. It rightly emphasizes the need for clear understanding before development begins, with user stories and visual aids playing a crucial role. The emphasis on technology selection based on the defined scope is also apt. Overall, the article provides sound guidance for successful web application development, highlighting the pivotal role of careful scope definition.

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2 Choose the architecture

The second step is to choose the architecture of your web app, which means how it will be structured, organized, and divided into components. The architecture will affect the performance, scalability, security, and reliability of your web app, as well as the ease of development and testing. You can use different architectural patterns, such as monolithic, microservices, serverless, or progressive web apps, depending on your needs and preferences.

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Eliezer Rivera

Full Stack Developer | Expert with Angular, Ionic, NodeJS, Typescript, JavaScript, C#, . Net, Firebase, MongoDB, SQL Server | Industrial Automation Programmer | Intermediate in React and VueJS
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Selecting the appropriate architecture for a web application is indeed a pivotal decision. It's essential to carefully evaluate the project's requirements and goals to determine the most suitable architecture. Each architectural pattern mentioned has its strengths and weaknesses, making it crucial to align the choice with the project's specific demands. For instance, microservices can provide excellent scalability and flexibility but may introduce complexity in managing multiple services. On the other hand, a monolithic architecture may be simpler to develop but might face challenges with scalability.

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3 Follow the DRY principle

The third step is to follow the DRY principle, which stands for Don't Repeat Yourself. This means that you should avoid writing duplicate or redundant code, and instead use abstractions, modules, functions, and classes to reuse and refactor your code. This will make your code more readable, maintainable, and extensible, and reduce the risk of errors and bugs.

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Eliezer Rivera

Full Stack Developer | Expert with Angular, Ionic, NodeJS, Typescript, JavaScript, C#, . Net, Firebase, MongoDB, SQL Server | Industrial Automation Programmer | Intermediate in React and VueJS
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The DRY principle is a fundamental aspect of writing clean and efficient code. It fosters modularity and encourages developers to create reusable components, which can greatly enhance productivity and code quality. By adhering to DRY, developers can reduce the time spent fixing duplicated code, ensure consistency across the application, and simplify maintenance and updates. It's essential for software engineers to prioritize this principle throughout the development process to create robust and scalable web applications.

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4 Use coding standards and conventions

The fourth step is to use coding standards and conventions, which are guidelines and rules for writing consistent and clean code. They cover aspects such as naming, formatting, commenting, and documenting your code, as well as using best practices for specific languages, frameworks, and libraries. By following coding standards and conventions, you will improve the quality, readability, and compatibility of your code, and make it easier for yourself and others to understand and modify it.

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Eliezer Rivera

Full Stack Developer | Expert with Angular, Ionic, NodeJS, Typescript, JavaScript, C#, . Net, Firebase, MongoDB, SQL Server | Industrial Automation Programmer | Intermediate in React and VueJS
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Utilizing coding standards and conventions is essential for creating a collaborative and efficient development environment. It establishes a common language and structure, promoting code readability, maintainability, and teamwork. These practices also enhance code comprehension through clear documentation and comments and ensure that the code adheres to industry-accepted norms, optimizing performance and compatibility in web applications. Overall, applying coding standards and conventions is a crucial best practice for successful web application development.

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5 Write unit tests and integration tests

The fifth step is to write unit tests and integration tests, which are automated tests that check the functionality and behavior of your code. Unit tests test individual units or components of your code, such as functions, methods, or classes, while integration tests test how different units or components work together. By writing unit tests and integration tests, you will ensure that your code meets the requirements and specifications, and that it does not break or produce unexpected results when you change or add new features.

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6 Use a version control system and a deployment pipeline

The sixth and final step is to use a version control system and a deployment pipeline, which are tools and processes that help you manage and deliver your code. A version control system, such as Git, allows you to track, store, and share changes to your code, as well as create branches, merge conflicts, and revert to previous versions. A deployment pipeline, such as GitHub Actions, allows you to automate the steps of building, testing, and deploying your code to different environments, such as development, staging, and production.

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7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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How do you design a deployable web app with reusable, testable code?

1

2

3

4

5

6

7

1 Define the scope

2 Choose the architecture

3 Follow the DRY principle

4 Use coding standards and conventions

5 Write unit tests and integration tests

6 Use a version control system and a deployment pipeline

7 Here’s what else to consider

Web Applications

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How do you design a deployable web app with reusable, testable code?

1

2

3

4

5

6

7

1 Define the scope

2 Choose the architecture

3 Follow the DRY principle

4 Use coding standards and conventions

5 Write unit tests and integration tests

6 Use a version control system and a deployment pipeline

7 Here’s what else to consider

Web Applications

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