![]() Logs can be stored to many storage devices, such as slack channels and server logs, making them more accessible to us.Ī singleton is a creational design pattern whose purpose is to ensure that only one instance of a class exists. They also allow us to develop more easily (console.log anyone?). With this information handy, we are able to find, and therefore resolve bugs more quickly, and ensure our applications are running correctly. Logs can inform us of many useful things such as errors, warnings, stack traces, order of operations, events, and more. Singletons are quite powerful, just be sure to evaluate the intended usage and avoid them if the resource will need a full CRUD-like lifecycle support in the future as making a singleton resource into a CRUD-based resource is often a breaking change.Logging is a fundamental part of applications. GET /me, or to offer a single resource to manage a nested resource such as user preferences. Singleton resources allow us to create “shortcuts” in our API, e.g. Singletons offer flexibility of managing a single instance of a resource, without the need to force-fit it into the typical CRUD-based pattern. ![]() This would support an upsert pattern, allowing the client to submit a complete representation of a resource at once, while the server determines if the actual operation is a create or update within the backend data store. In this case, use a combination of the HTTP POST and PUT methods to support create and update operations.įor singleton resources that are assumed to exist already, use the HTTP PUT method. While singleton resources may not offer the full spectrum of CRUD-style lifecycles like their collection-based brethren, they should still adhere to the proper selection of HTTP action verbs that best match the lifecycle necessary. Singleton resources may already exist without the need to create them, or they may require creation via a POST endpoint. There is only one instance, the identifier isn’t exposed to the client, and the only operations are GET /users/5678/preferences to retrieve them and PUT /users/5678/preferences to update them.
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