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A Web API is a development in Web services where emphasis has been moving to simpler representational state transfer (REST) based communications. [2] Restful APIs do not require XML-based Web service protocols (SOAP and WSDL) to support their interfaces.
An example of a popular web API is the Astronomy Picture of the Day API operated by the American space agency NASA. It is a server-side API used to retrieve photographs of space or other images of interest to astronomers , and metadata about the images.
An example might be a shipping company API that can be added to an eCommerce-focused website to facilitate ordering shipping services and automatically include current shipping rates, without the site developer having to enter the shipper's rate table into a web database. While "web API" historically has been virtually synonymous with web ...
For example, Fielding identified the embedding of session information in URIs as a violation of the constraints of REST which can negatively affect shared caching and server scalability. HTTP cookies also violated REST constraints [ 4 ] because they can become out of sync with the browser's application state, making them unreliable; they also ...
A SOAP-based web service can be implemented as a single Java class.An endpoint interface, also known as a service endpoint interface (SEI), is a term used in Java Platform, Enterprise Edition when exposing Enterprise JavaBeans as a Web service (see also Service Implementation Bean (SIB)).
An open API (often referred to as a public API) is a publicly available application programming interface that provides developers with programmatic access to a (possibly proprietary) software application or web service. [1] Open APIs are APIs that are published on the internet and are free to access by consumers. [2]
The mainstream XML standards for interoperation of web services specify only syntactic interoperability, not the semantic meaning of messages. For example, Web Services Description Language (WSDL) can specify the operations available through a web service and the structure of data sent and received but cannot specify semantic meaning of the data or semantic constraints on the data.
The following is a list of web service protocols. BEEP - Blocks Extensible Exchange Protocol; CTS - Canonical Text Services Protocol; E-Business XML; Hessian; Internet Open Trading Protocol; JSON-RPC; JSON-WSP; SOAP - outgrowth of XML-RPC, originally an acronym for Simple Object Access Protocol; Universal Description, Discovery, and Integration ...