Difference between revisions of "REST"
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Revision as of 14:58, 6 December 2014
Representational State Transfer (REST) [1] is a style of software architecture for distributed systems such as the World Wide Web. REST has emerged as a predominant web API design model.
Key goals of REST include:
- Scalability of component interactions
- Generality of interfaces
- Independent deployment of components
- Intermediary components to reduce latency, enforce security and encapsulate legacy systems
Web API
The following table shows how the HTTP methods are typically used to implement a web API.
| Resource | GET | PUT | POST | DELETE |
|---|---|---|---|---|
Collection URI, such as http://example.com/resources
|
List the URIs and perhaps other details of the collection's members. | Replace the entire collection with another collection. | Create a new entry in the collection. The new entry's URI is assigned automatically and is usually returned by the operation. | Delete the entire collection. |
Element URI, such as http://example.com/resources/item17
|
Retrieve a representation of the addressed member of the collection, expressed in an appropriate Internet media type. | Replace the addressed member of the collection, or if it doesn't exist, create it. | Not generally used. Treat the addressed member as a collection in its own right and create a new entry in it. | Delete the addressed member of the collection. |
Database applications
The acronym CRUD refers to all of the major functions that are implemented in relational database applications. Each letter in the acronym can map to a standard SQL statement and HTTP method:
| Operation | SQL | HTTP |
|---|---|---|
| Create | INSERT | POST |
| Read (Retrieve) | SELECT | GET |
| Update (Modify) | UPDATE | PUT / PATCH |
| Delete (Destroy) | DELETE | DELETE |
Making full use of HTTP methods, along with other constraints, is considered "RESTful".
Secure Web Service
Develop a RESTful web API for developers that is secure to use, but doesn’t require the complexity of OAuth and takes a simple “pass the credentials in the query” approach… or something equally-as-easy for people to use, but it needs to be secure [2].
The solution could use 'Amazon Web Services', but maybe 'HMAC' (Hashed-Based Message Authentication) is much easier.
See also
- M. Elkstein, Learn REST: A Tutorial. A fast-training course for REST - Representational State Transfer, a new approach to systems architecture and a lightweight alternative to web services
- PHP Symfony, REST implementation framework.
- Net Tuts+, A beginners introduction to http and rest.
- Webservices, More information on Web Services
Reference
- ↑ REST, Description on Wikipedia.
- ↑ Riyad Kalla, In programming: Designing a Secure REST (Web) API without OAuth
