RESTful Java Patterns and Best Practices


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They can continue consuming the old version.

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The clients can migrate to the new version at their own speed. This topic is hotly disputed in the community. You should take into account that you may end up building and maintaining! If you are building internal APIs you most likely know all of your clients. So performing breaking changes can be an option again.

But it will require more communication and a coordinated deployment. This prevents easy evolvability.


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The question is, how much effort would it take the clients to update the URLs? Especially internal APIs might never need a real version 2 for the existing resources at all. If you finally really need a new version for an existing resource, you can still go for content negotiation and utilize the Accept header. People are getting really upset.

I prefer to be pragmatic. Update I completely reworked this post. Read : Use GET for reading resources. GET Idempotent Read-only. GET never changes the state of the resource on the server-side. It must not have side-effects. Hence, the response can be cached safely. Can be used for both creating and updating Commonly used for updating full updates.

There is only one avatar for each employee. Always include the whole payload in the request. POST Not idempotent!

The other fields of employee 1 are not changed. The RESTful web service generates an ID for the new employee, creates the employee in its internal model and sends a response to the client. Advantages: There is space left to add metadata e. Provide Useful Error Messages Additionally to an appropriate status code, you should provide a useful and verbose description of the error in the body of your HTTP response. Many Requests. Many additional requests may be required; in the worse case for every employee.

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And this is multiplied by every relationship manager , teamMembers and so on an employee has. The client has to stitch the data together in order to get the big picture. Sideloading We can refer to the relationship with a foreign key and put the referred entities also in the payload but under the dedicated field included. We get along with a single request.

Tailored payload size. No duplication e.


  1. Book Review : RESTful Java Patterns & Best Practices.
  2. Key requirements for the API.
  3. Thoughts & ideas on enterprise mobility.
  4. Is can directly follow the relationships to get the actual data. Increased payload size and duplications. Referenced entities may be embedded multiple times. When the client raises a request to the server through an API, the client should know the feedback, whether it failed, passed or the request was wrong. HTTP status codes are bunch of standardized codes which has various explanations in various scenarios.

    The server should always return the right status code. The following are the important categorization of HTTP codes:. These status codes represent that the requested action was received and successfully processed by the server. You can follow any casing convention, but make sure it is consistent across the application. If the request body or response type is JSON then please follow camelCase to maintain the consistency.

    How did you like the book?

    All of these actions are simply the query on one dataset. There will be no new set of APIs to handle these actions. When your APIs are being consumed by the world, upgrading the APIs with some breaking change would also lead to breaking the existing products or services using your APIs. If there is any major breaking update, we can name the new set of APIs as v2 or v1. These guidelines are compiled on my experience of development. I would love to know your views on the pointers mentioned above.

    RESTful API Design. Best Practices in a Nutshell.

    Please leave a comment, and let me know! Mahesh Haldar haldar. Learn how to enable JavaScript on your browser. NOOK Book. The confluences of social networking, cloud computing, and the era of mobile applications, has created a generation of emerging technologies that allow different networked devices to communicate with each other over the Internet with REST. It has the benefits of being stateless, easing scalability, visibility, and reliability as well as being platform and language agnostic. Thus, the widespread adoption of REST and JSON opens up the possibilities of applications incorporating and leveraging functionality from other applications as needed.

    Over time, the use of RESTful services has been increasing in order to get much more secure and robust applications. This book is a practical, hands-on guide that provides you with clear and pragmatic information to take advantage of the real power of RESTful services and gives you a good foundation for using them in your applications. The book teaches you about a range of exciting capabilities with RESTful services and explores the infinite possibilities by using the diverse building blocks and tips covered throughout the various chapters.

    Then, the book provides you with a quick introduction of URL design patterns, the request response paradigm, programming advanced security standards, and traceability in REST programming models.

    RESTful Java Patterns and Best Practices RESTful Java Patterns and Best Practices
    RESTful Java Patterns and Best Practices RESTful Java Patterns and Best Practices
    RESTful Java Patterns and Best Practices RESTful Java Patterns and Best Practices
    RESTful Java Patterns and Best Practices RESTful Java Patterns and Best Practices
    RESTful Java Patterns and Best Practices RESTful Java Patterns and Best Practices
    RESTful Java Patterns and Best Practices RESTful Java Patterns and Best Practices
    RESTful Java Patterns and Best Practices RESTful Java Patterns and Best Practices

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