For this blog I chose to explore the article “REST API Design: Architectural Foundations and Modern Practices” by Nikola Lazarov. Since CS-343 focuses on software construction, modularity, and clean interfacing, I wanted to learn more about how REST APIs fit into architecture beyond the basic GET/PUT/POST/PATCH commands. Lararov’s article stood out because it connects the roots of REST with other practical API design conventions we’ve learned in 343.
Lazarov begins by grounding the discussion in the original REST constraints defined by Roy Fielding. These include ideas such as statelessness, a uniform interface, resource-based design, and layered system architecture. The article then explains how these constraints influenced real world API design today. He connects these constraints directly to the goals of scalability, simplicity, and clear separation of concerns. For example, the statelessness requirements means that each request must contain all the information the server needs, which helps a system scale because servers don’t need client-specific context. His explanation in the article helped me understand that REST is a set of architectural decisions that influence how the entire system behaves and it isn’t nearly as independent as I thought.
The article also discusses how to apply REST principles in API design. Lazarov highlights the importance of resource-oriented URLs and matching HTTP methods, GET for retrieving, POST for creating, PUT for updating, and DELETE for … deleting. He also greatly emphasizes using meaningful HTTP status codes to communicate consistently. These design choices might seem small, but that’s kind of the entire point, these choices contribute to APIs that are predictable and easier for clients and developers to understand. Rather than presenting REST as a rigid formula, Lazarov explains how these principles guide the structure of modern APIs, helping developers create interfaces that are both intuitive and aligned with broader architectural goals.
I selected this article because I believe that it directly ties into topics we’ve explored in 343. REST APIs are essentially interfaces between components of service, so understanding why they are designed the way they are is directly relevant. I also wanted a source that explains the “why” behind REST’s patterns instead of just the “how.”
What I learned most from this article is how intentional REST API design is and what it should look like. I had previously thought of endpoints of pretty arbitrary choices, but Lazarov’s explanation helped me understand that each part of an API should reflect the underlying REST principles.
From the blog CS@Worcester – My Coding Blog by Jared Delaney and used with permission of the author. All other rights reserved by the author.
