Software Engineering Principles: Applying SOLID and DRY Principles in Development

Basically, software engineering is called a systematic and structural approach to software development that can be anything like web app development, mobile app development, website designing, etc.?

To this popular niche, there are principles to follow for effective software development . The most famous ones are Keep it simple, stupid (KISS), You Aren’t gonna need it (YAGNI), SOLID, and Don’t repeat yourself (DRY). These principles lay the foundation for development for the developers to build better products. In this blog, we are going to see each principle in detail.?

Principles of software engineering?

Software engineering principles are made to develop optimal software with best practices. A few of the popular principles are listed here.??

Keep it simple, stupid (KISS) principle?

This principle is created to remind developers that the software or application they create needs to be developed simply without complexity and with easy-to-understand formats and procedures. This principle is made to ensure that the source code is clear to debug, and its maintenance should be done easily in the future when it is handled by any other software engineer.?

In order to comply with the KISS principle, developers are usually said to keep one method for all use cases.??

Don’t repeat yourself (DRY) principle?

This principle is also called “Duplication is evil”. It tells developers to reduce the repetition of methods or information in their work to eliminate redundancy. This principle advises them to separate the entire coding into groups. By separating the coding into smaller segments, the code will be more understandable and help in managing the code easily whenever tweaking or optimization is required.?

SOLID principle?

SOLID is a set of combined principles that guide the developers to code the software in an understandable format that is easier to maintain or manage and simple to scale or extend.?

The expansion of SOLID and its principles has the following?

• S- stands for the single responsibility principle which represents every module of code that should carry out one function which all combined to make work the one main functionality of the software.?
• O- stands for Open-close principle which represents that any part of the software should be accessible and can be easily extended to add new features but should not be modified.?
• L- stands for the Liskov substitution principle which represents that the objects inside the programming can be replaced with parameters of their sub-category to not to reduce the accuracy of the program.?
• I- stands for interface segregation principle which represents that it is better to avoid adding new features or approaches to the existing interface. Instead, they can create new interfaces to add new features and permit the class to implement different interfaces depending on the requirements.?
• D- stands for Dependency inversion principle which represents that the design pattern used in the development should be a dependency inversion pattern which is resolved by utilizing dependency injection.?

Usually, the SOLID principles are extremely philosophical and abstract, but it reflects good results in real-life applications. The software that is developed using the SOLID principle is much easier and simple to share with other technicians or collaborators to scale it to meet the volume, modify the software based on the requirement, test the flexibility and vulnerability, and troubleshoot without any problems?

You aren’t gonna need it (YAGNI) principle?

Extreme programming is where the you aren't gonna need it (YAGNI) philosophy originated. It calls on programmers to create features only when they are genuinely required, not when they anticipate or presume that something could be helpful in the future. When implementing Agile, the YAGNI principle is crucial since the Agile framework dictates that the development team should only concentrate on the current iteration in order to achieve the agreed-upon scope on schedule.??

The YAGNI principle's principal objective is to steer clear of overengineering items that you believe you'll need in the future. Because you typically find that you don't need it or that you need something different than what you anticipated in the end.?

The main advantage of YAGNI is a more cost-effective product development process because:??

• Better developer output: The team concentrates on efficiently providing the present needs. They don't invest time and energy in speculation.??
• More adaptable codebase: You won't have to figure out how to use less-than-ideal solutions you had created before you knew all the information.??

Hence in conclusion?

These 4 principles lead the developers to make the code efficient and in understandable format. So that it can be maintained hassle-free and scaled stress-free. Here we have seen only the basic principles, but the developers have to use as many principles as possible to ensure reliability and flexibility in the coding when it is transferred or passed across the hands of many software engineers.??