Experience with RESTFUL Services and API’S

API stands for application program interface. APIs are nothing but application’s interface, for using this application we have set of functions and procedure’s to be maintained and that allows the creation of application which access the features or data of an operating system, application, or other services. Once we creative a application there are so many possible ways to make application to be better outcome.

Application program interface (API) is a set of protocols, protocols are nothing but a set of rules to be undertaken to create a software, games, applications etc. whatever we have a create it connects with other components of interface to make a better performance.

Other components

• Hardware
• Services
• 3rd party applications

There are so many different types of API’S for operating system, application or websites, windows.

In the system hardware and applications when we copy and paste text from one application to another, it is the API that allows to work

For example:

• UBER
• UBER-Google maps API
• Requesting cab
• Showing distance &Nearest cabs

Google Maps API can be integrated with any app, and every API denotes that particular backend functions. APPS will have a secure and functional developer API

RESTFUL SERVICES

A REST API (also known as RESTFUL API) and also stands for representational state transfer (REST) is an architectural style that defines a set of constraints to be used for creating web services.

RESTFUL API’S support the information exchange because it will follow secure, reliable, and efficient software communication standards.

RESTFUL API, Formats of data is based on HTTP, text, and JSON. Working is completely based on REST applications. Restful services are too flexible, and this consumes less bandwidth. The client access cacheable information anytime and anywhere.

RESTFUL SERVICES METHODS ARE:

• C- Create
• R-read
• U-update
• D- Delete

Better scope of Interface

As an API developer, you need to:

• Decide which information you would like applications to be able to access on a user's behalf.
• Define these access levels as custom scopes. 
• Identify these scopes so that calling applications can use them.

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Some better ways to use API to make better in scope:

In the case of API where the calling application is a third-party, or external, application. In this case, the calling application will request authorization from the user to access the requested scopes, and the user will approve or deny the request.

In an API where the calling application is a first-party application, or application that is registered under the same Auth0 domain as the API it is calling. In this case, by default, user consent is not requested, but you may configure consent to be required.

In an API where the calling application is a back-end service, whether third-party or first-party, and no user exists. In this case, user consent is never requested.

All of these examples use scopes to limit access through use of a token. If you so choose, your API may also use additional logic beyond the token to enforce more extensive access control.

Scalibility of application

Some points or benefits to make a better interface:

• Scalibility : development teams can scale the product without much difficulty because there is separation between the client and server.
• Flexibility: APIs is make data migration from one server to another easy. They also helps in changes in database.
• Independence: APIs  are also adaptable to the working  platforms, which will helps to perform in several oppurunity and environment while developing.
• Security: Enhanced security controls to match customer specific business needs.

Pros and cons of api’s

Pros of api’s

• It allows you to load test specific serves rather than the whole stack.
• It is well supported.
• It’s not as resource intensive as browser level testing.
• It’s cheaper.
• Cost efficiency
• Security.

cons of api’s

• api application does not simulate real users interacting with elements of webpages.
• It doesn’t give you an idea of how user friendly your application is.
• It doesn’t measure front end performance
• Api load testing doesn’t run client side scripts.

Carreer opportunity:

He or She should have some skills to be maintainted to have a good career opportunity in API’S

• Cross-platform development.
• API design
• Front-end development
• Different coding languages.
• Integration knowledge.
• API orchestration skills
• Programming tools.

To ensure that each of these components work as expected, knowing what to test for and how to test at the API level is rapidly becoming an indispensable skill for every software tester.

Conclusion

This document had clearly explains the API’s and their restful services, scope of interface, scalability of application, pros & cons of APIs and career opportunity according to their target audience.

Scope @ N9 IT Solutions:

• N9 IT Solutions is a leading IT development and consulting firm providing a broad array of customized solutions to clients throughout the United States. 
• It got established primarily with an aim to provide consulting and IT services in today’s dynamic environment.
• N9 IT also offers consulting services in many emerging areas like Java/J2ee, Cloud Computing, Database Solutions, DevOps, ERP, Mobility, Big Data, Application Development, Infrastructure Managed Services, Quality Assurance and Testing.