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  1. DZone
  2. Software Design and Architecture
  3. Integration
  4. Rest API vs GraphQL

Rest API vs GraphQL

When it comes to building APIs, two popular choices for developers are GraphQL and REST. Both have their strengths and weaknesses, and choosing one over the other depends on the specific needs of your project.

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Farith Jose Heras García user avatar
Farith Jose Heras García
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Feb. 28, 23 · Tutorial
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REST, or Representational State Transfer, is an architectural style for building web services that use HTTP requests to access and manipulate data. REST APIs are widely used and understood by developers, making it a popular choice for building web services. On the other hand, GraphQL is a query language for APIs that was developed by Facebook. It allows clients to specify the structure of the data that they require and receives the exact data that they request.

Let's take a closer look at some of the pros and cons of using GraphQL and REST.

Pros of GraphQL:

  • Reduced network overhead: GraphQL allows the client to request only the data they need, reducing the amount of data transmitted over the network. This is particularly useful for mobile devices that may have limited bandwidth or for large datasets.
  • Flexibility: With GraphQL, the client can specify the data they need, allowing the server to return only the required data. This makes it easy to add new fields or features without having to make changes to the API.
  • Strongly typed: GraphQL has a strong type system that helps with validation and error handling. This makes it easier to catch errors during development and reduces the risk of runtime errors.

Cons of GraphQL:

  • Learning curve: GraphQL has a higher learning curve compared to REST due to its unique syntax and query language.
  • Caching: Because the data returned by GraphQL can be highly specific, it can be difficult to implement caching. This can lead to performance issues when working with large datasets or frequently changing data.

Pros of REST:

  • Simplicity: REST is widely used and understood by developers, making it easy to implement and maintain.
  • Caching: REST APIs are designed to work with HTTP caching, which can improve performance and reduce network overhead.
  • Separation of concerns: REST separates the concerns of the client and the server, making it easy to develop, test, and deploy the API.

Cons of REST:

  • Over-fetching: REST APIs can return more data than the client needs, leading to increased network overhead and slower performance.
  • API versioning: As the API evolves, it can be difficult to maintain backward compatibility, leading to versioning issues.

In terms of Good Practices, here are a few tips to keep in mind when building APIs:

  • Use descriptive and meaningful endpoint names: Use names that are easy to understand and remember, and follow a consistent naming convention across all endpoints. For example, use /products instead of /items.

  • Keep the API versioning in mind: As your API evolves, you may need to make changes that are not backward-compatible. To avoid breaking existing clients, consider versioning your API, and use version numbers in the endpoint URLs. For example, use /v1/products for the first version of your product API.

  • Use pagination for large datasets: When working with large datasets, use pagination to retrieve the data in smaller chunks. This can improve performance and reduce network overhead.

  • Implement security best practices: Use secure authentication and authorization methods to protect your API from unauthorized access. For example, use OAuth2 for authentication and JWT for authorization.

  • Use caching when appropriate: If your API returns data that doesn't change frequently, consider using caching to reduce the number of requests to the server. Use cache control headers to specify how long the data should be cached.

  • Use tools and libraries to reduce boilerplate code: Use open-source tools and libraries to reduce the amount of boilerplate code you need to write. For example, use a library like Express.js for building REST APIs, and use a framework like Apollo Server for building GraphQL APIs.

In conclusion, both GraphQL and REST have their strengths and weaknesses, and choosing one over the other depends on the specific needs of your project. When building an API, it's important to consider factors such as performance, flexibility, and ease of use to determine which solution is best suited for your needs.

You can find a good explanation about how to implement REST API here:

https://dzone.com/articles/java-rest-api-frameworks-1

https://dzone.com/articles/nodejs-rest-api-frameworks

API GraphQL HTTPS REST Cache (computing) Data (computing)

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Related

  • Pagination in GraphQL: Efficiently Retrieve and Manipulate Data
  • What Is API-First?
  • Designing Scalable Java APIs With GraphQL
  • Consuming GraphQL API With React.js

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