Api Design Error Codes
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Api Error Codes Best Practices
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one: Plan Your API. Provide Helpful Responses Building a solid foundation to ensure the scalability and longevity of your API is crucial, but just as crucial is ensuring that developers can understand your API, and trust it to respond with the appropriate header codes and error
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messages. In this week's API best practices, we're going to cover how to ensure that developers mailchimp api error codes understand exactly what happened with their API call by using the appropriate HTTP Status Codes (something that is often times missed), as well as google api error codes by returning descriptive error messages on failure. Use HTTP Status Codes One of the most commonly misused HTTP Status Codes is 200 - ok or the request was successful. Surprisingly, you'll find that a lot of APIs use 200 when http://apigee.com/about/blog/technology/restful-api-design-what-about-errors creating an object (status code 201), or even when the response fails: In the above case, if the developer is solely relying on the status code to see if the request was successful, the program will continue on not realizing that the request failed, and that it did something wrong. This is especially important if there are dependencies within the program on that record existing. Instead, the correct status code to use would have been 400 to indicate a "Bad Request." By using http://blogs.mulesoft.com/dev/api-dev/api-best-practices-response-handling/ the correct status codes, developers can quickly see what is happening with the application and do a "quick check" for errors without having to rely on the body's response. You can find a full list of status codes in the HTTP/1.1 RFC, but just for a quick reference, here are some of the most commonly used Status Codes for RESTful APIs: 200 Ok 201 Created 304 Not Modified 400 Bad Request 401 Not Authorized 403 Forbidden 404 Page/ Resource Not Found 405 Method Not Allowed 415 Unsupported Media Type 500 Internal Server Error Of course, if you feel like being really creative, you can always take advantage of status code: 418 I'm a Teapot It's important to note that Twitter's famed 420 status code - Enhance Your Calm, is not really a standardized response, and you should probably just stick to status code 429 for too many requests instead. Use Descriptive Error Messages Again, status codes help developers quickly identify the result of their call, allowing for quick success and failure checks. But in the event of a failure, it's also important to make sure the developer understands WHY the call failed. This is especially crucial to the initial integration of your API (remember, the easier your API is to integrate, the more likely people are to use it), as well as general maintenance when bugs or other issues come up. You'll want your error body to be well formed, and
box.com Get In Touch Search CATEGORIES Main News Commentary How-To Customer Stories Culture Events Engineering Frontend Backend Ops Mobile Culture Events Platform News Commentary How-To Customer Stories Events mainengineeringplatform box.com Get In Touch Get developer hugs with rich error handling in your https://www.box.com/blog/get-developer-hugs-with-rich-error-handling-in-your-api/ API 02 Apr 2013 · by Aniket Patil / uncategorized Server-side error handling and communication are major, often under-appreciated components in designing a REST API. Most API developers spend their time on http://apiux.com/2013/03/28/2-steps-api-error-codes/ everything else involved in getting a REST API done right —from debating which resources need to be exposed through the API, to getting the HTTP verbage right, to using content negotiation. error codes Unfortunately, error responses tend to be an after-thought. They're treated as second-class citizens whose design never gets reviewed nor discussed as actively as any another component of the API. The fact is that although errors only account for a fraction of all messages sent by the API (at least typically), they are the most scrutinized messages by app developers. (Even more than success api error codes response messages!) App developers are likely to make errors when making an API request, so it's crucial to provide them with information to troubleshoot and resolve the issue. For example, the developer might forget to set a required field or the value may not match an expected format. Error responses are extremely important to get right — they determine whether developers keep building on your API or get so frustrated with cryptic error responses that they abandon the API. Unfortunately, there isn't a well defined format indicating how an error response should be structured. When it comes to transmitting errors caused due to client errors, the Box API is as RESTful as the rest of the API. All client-side errors are returned using a 4xx error code. In most cases, the API returns a 400 Bad Request. When a more specific error condition happens, the Box API also returns a finer-grained 4xx status code that indicates the error condition. Examples of such codes include 409 (when you’re trying to create a folder with a name that is already used in the current parent folder) or a 413 (when
dealing with errors and exceptions, and translating those errors into something meaningful for their applications. photo by Bent Jensen Because APIs are based on different technologies and libraries, error codes are often inherited and do not make sense to whatever framework the consumer is using. Even worse is when those error codes and messages are simply passed through to the end-user without any manipulation by the application. So, how can you make sure that all your API consumer understand your error codes and can handle them properly? If you're offering a REST API, consumers expect your endpoints to behave like any other HTTP endpoint, so a good start is to simply follow the standards. Whenever possible use common HTTP status codes HTTP status codes have been created for a reason. RFC 2616 was published in 1999 and defines the HTTP/1.1 protocol, which is the one being used by most of the Web now. It also describes a set of status codes that Web servers should use as replies to callers. Among some other status codes, the protocol defines two main classes of error codes: codes starting with 4 (e.g. 400, 401, 412) are considered Client Errors: the caller is doing something wrong and the payload should present a possible solution to the problem; codes starting with 5 (e.g. 500, 503, 504) are considered Server Errors: there's something wrong with the way the server is handling the call and the payload should give more details about the situation, including if it's permanent or temporary. In both cases, the protocol definition explicitly says that servers "SHOULD include an entity containing an explanation of the error situation", so it's a good practice to do it. When not possible, use HTTP 400 or 500 While common HTTP status codes can describe most situation where a