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Three Important Software Design Patterns To Recognize and Understand

Nov 15, 2019

Discover three vital software design patterns that every developer should know. The Model-View-Controller (MVC) pattern serves as a robust architecture for modern web applications, perfect for crafting minimally viable products. Unravel the mystery of the Singleton pattern, which helps manage class instances and optimize memory usage. These patterns are not just theoretical; they play significant roles in real-world applications, enhancing your programming skills and enhancing software design.

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INSIGHT

MVC Separates Core Application Layers

Model-View-Controller (MVC) pattern cleanly separates the user interface, data, and control logic.
MVC is ideal for CRUD applications, improving maintainability and scalability across multiple views and platforms.

ADVICE

Learn MVC from Examples

If you're not comfortable with MVC, study examples and templates in your preferred language.
This helps you recognize MVC in projects and implement it effectively when needed.

INSIGHT

Singleton Controls Single Instances

Singleton pattern ensures one and only one instance of a class exists globally.
It helps avoid race conditions and coordination complexity when managing shared resources.

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There are a wealth of reasons for understanding and recognizing software patterns. However, these three crucial software design patterns appear in many different environments. They might even rise to the level of things you should know even without knowing what they are called. These patterns are prevalent and used heavily in modern software solutions.

Model-View-Controller (MVC)

The first pattern in our list is an architectural approach that is found in many modern web applications. We have seen advances beyond this simple and reliable pattern. Nevertheless, this approach is perfect for common CRUD applications. That makes it an excellent starting point for a minimally viable product while allowing for extensive growth. As always, a solid foundation is a key to future success with any architecture.

Product Catalog: Build an MVC Application to Manage Our Catalog

Singleton

The Singleton is one of the least known patterns by name while still understanding its general purpose. I have come across numerous developers that have not heard of this pattern. However, once it is explained, they understand and have often seen it in use many times. I am not sure why this name seems so elusive, but that does not lower its value. The strengths and weaknesses of this approach are particularly important in the way modern software is created. We tend to use a large number of class instances in an application, and Singletons can help us manage those along with memory and race condition errors.

Software Design – The Singleton Pattern

Iterator

This example is one of the most important software design patterns in modern programming. It is found in most frameworks and even natively in manner languages. We rarely create a program that does not use loops and collections. Therefore, a pattern for looping through a collection is going to appear over and over. That is where the Iterator comes in. It is often provided for us, and we do not need to create it from scratch. Nevertheless, we do need to be comfortable using the pattern. Good programming standards practically demand it.

Software Design – The Iterator Pattern