Restful Services

Cousins Infotech offers the best web service providers to integrate applications from different systems. We provide effective and  the fastest way to create Restful Services to multiple back end data sources – with  both read and write capabilities which are designed to meet the client objectives and users.

What is REST?

REST (REpresentational State Transfer) is an architectural style, and an approach to communications that is often used in the development of Web services. for distributed systems such as the World Wide Web. Representational State Transfer is intended to evoke an image of how a well-designed Web application behaves: a network of web pages (a virtual state-machine), where the user progresses through an application by selecting links (state transitions), resulting in the next page (representing the next state of the application) being transferred to the user and rendered for their use.

REST’S decoupled architecture, and lighter weight communications between producer and consumer, make REST a popular building style for cloud-based APIs, such as those provided by Amazon, Microsoft, and Google. When Web services use REST architecture, they are called Restful APIs (Application Programming Interfaces) or REST APIs.

Restful Services Methods and Standards

REST style emphasizes that interactions between clients and services is enhanced by having a limited number of operations (verbs).Flexibility is provided by assigning resources (nouns) their own unique Universal Resource Identifiers (URIs). Because each verb has a specific meaning (GET, POST, PUT and DELETE), REST avoids ambiguity

  • HTTP
  • URL
  • REST architecture involves reading a designated Web page that contains an XML file. The XML file describes and includes the desired content(Resource Representations).
  • text/xml, text/html, image/gif, image/jpeg, etc (MIME Types)

In comparison to SOAP based web services,the programming model is simpler and use of native XML instead of SOAP reduces the serialization and deserialization complexity as well as the need for additional third party libraries for the same.

Rest allows for a minimum amount of data to be passed using the same well-established mechanisms that define the web without a lot of the encumbrances introduced by fatter protocols. This allows programmers to more rapidly build programs that access and act upon data exposed via APIs, even in environments with unreliable network speeds and limited computing power.

Restful Services works almost exactly like a website in a browser. A resource is exposed to a program via a URL. The program can access that URL and receive data about the resource, not unlike when you type in a URL to your browser and get a web page back. Well designed Restful APIs include additional links the program can follow to request related information – similar to how you would click on a link to visit a new page – or to submit data to update the given resource – similar to how you would fill out a web form to create a new account for a web site

REST APPLICATIONS

Elastic-search is one of the best instances Restful Search and analytics.It provides a distributed, multitenant-capable full-text search engine with a RESTful web interface and schema-free JSON documents.

Scope of Restful Services:

  • Performance – component interactions can be the dominant factor in user-perceived performance and network efficiency
  • Scalability to support large numbers of components and interactions among components
  • Simplicity of interfaces
  • Modifiability of components to meet changing needs (even while the application is running)
  • Visibility of communication between components by service agents
  • Portability of components by moving program code with the data
  • Reliability is the resistance to failure at the system level in the presence of failures within components, connectors, or data
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