What is REST vs GraphQL, and when would you use each?

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REST vs GraphQL: What’s the Difference — and When Should You Use Each?

As Full Stack Python learners, understanding APIs is essential. Two major approaches dominate: REST and GraphQL.

What is REST?
REST (Representational State Transfer) is a widely-used architectural style based on HTTP methods—GET, POST, PUT, DELETE—and separate endpoints for each resource. It is easy to learn, tappable into existing debugging tools, and benefits from mature tooling and documentation workflows. In the 2023 Postman State of the API report, 86% of developers still use REST, compared to 29% for GraphQL.

What is GraphQL?
GraphQL is a modern query language and runtime (over HTTP) that empowers clients to ask for exactly the data they want—no under- or over-fetching. It uses a single endpoint and a strong type schema for introspection and efficient queries.

Advantages & stats:

• Performance & efficiency:
  GraphQL can cut complex query resource usage by ~30% over REST. In a Python + Streamlit implementation, GraphQL reduced API request count by 83%, data transfer by 75%, and improved frontend performance 76% compared to REST. GitHub’s GraphQL API even reduced mobile app data usage by 60% with faster load times.

• Trade-offs:
  However, GraphQL comes with challenges—higher CPU usage (~23% more), caching complexity (56% of teams report issues), and the risk of N+1 query problems (affecting 34% of implementations).

How I-Hub Talent Empowers You (Educational Students)

At I-Hub Talent, our Full Stack Python Course equips students with both foundational REST API skills and modern GraphQL techniques. We teach real-world API integration with Python frameworks like Flask/Django (for REST) and Strawberry or Graphene (for GraphQL). You’ll learn how to design efficient queries, manage caching, and handle real-time data for mobile or data-rich applications. With hands-on projects and expert guidance, I-Hub Talent ensures you understand when and why to choose the right API style for your full-stack dashboards, apps, or services.

Conclusion

In summary, REST remains a reliable, beginner-friendly standard perfect for simple, well-structured applications. GraphQL, on the other hand, excels in complex, dynamic scenarios where optimizing data transfer and client flexibility matters. As a Full Stack Python learner, mastering both empowers you to build powerful, efficient APIs. And with I-Hub Talent, you'll gain the skills and confidence to decide—and implement—the right choice for your projects. So—are you ready to explore both APIs and decide which fits your next project best?

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