Standards – there is no defined standard for building REST based API’s.Cacheable – responses are cacheable which can greatly improve the performance of the web service by eliminating unnecessary calls to the backend.JSON is by far the most popular data format used in REST based API’s. Flexible – RESTful API’s can accept and serve data in many different formats including JSON, XML, Atom and others.Stateless – each call to the web service has all the information it needs to process the request and does not rely on storing client-server context.REST based API’s do not have a well defined security protocol – but JSON Web Tokens (JWTs) are the most common method of authenticating and authorizing requests. Web services built with this architecture can evolve independently of the applications that consume them. RESTful API’s have gained massive popularity due to their interoperability and flexibility on the web. Utilizing HTTP verbs like GET and POST the client instructs the API to retrieve or create resources. Developing a REST based API allows you to expose functionality of your web service over HTTP and interact with it over the web. Recently, a lot of new APIs are being developed as ODATA only APIs to prepare for the future challenges of scalability and performance.Representational State Transfer (REST) is an architectural pattern commonly used in developing modern web based applications ranging from websites, mobile apps, games and more. ![]() ODATA can be assumed as the youngest child of the HTTP family with newest and greatest capabilities but lacks in wide adoption. This is the newest member of the family for data exchange built on architectural pattern of REST. OData - It has been adopted by a lot of companies including SAP, IBM, Salesforce, Tableau, Databoom, Progress, Red Hat and Dell. REST is more suitable for Apps requiring moderate security but high scalability for example Social sites like Twitter, Facebook, Instagram etc. Similarly, REST is a step between SOAP and ODATA and can be assumed as the middle child of the HTTP family. REST is an architectural pattern that ODATA uses as well. This means that developers have no need to install additional software when creating a REST API. ![]() REST API - While REST APIs were designed to take advantage of existing protocols & used over any protocol, when used for web APIs it typically takes advantage of HTTP. SOAP is more suitable for Enterprise Apps requiring high Security, distributed environments like Payments and financial applications. SOAP has been there for a while and can be assumed as the eldest son of HTTP family. However, lately companies have started looking at REST/Odata services due to its light wait, extensibility, navigational properties at resource level. ![]() That is why it is perfect for usage across the web applications. SOAP API - It is built upon the XML specification & works with the HTTP protocol. For simplicity, we can assume it to be the Father of transport protocols with Children like SOAP, REST and ODATA HTTP - HTTP is the native transport layer protocol that can carry plain, soap, json or ODATA messages. SOAP, REST, ODATA and HTTP protocols are the most important current Web service APIs.
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