API, the Application Interface is in working mode!

                     

The applications you are using like food eateries, clothing, e-commerce, and all, on every application you are sending a request and getting a reply; the request sent from the user end is taken via the application to the concerned server and the server gives a reply to it eventually. Thus, for all the above-mentioned cycle processes API aka application programming interface is working.

 

What exactly API is?

An application Programming Interface or API is a middleman in application technology whose function is to set rules, standards and protocols that will allow the different software applications to communicate, receive or send data with each other on different or same grounds. So, basically, API is asking you to let your application services of yours interact with the application service of others without even asking each other that ‘how they are processing or working?

 

API can be released in different policies method:

Private: The company is the master of this API and is controlled by the company only.

Public: This API is open to all and can be used by any innovator to use by, to create any innovation.

Partner: Partner API defined itself, that it is sometimes private or sometimes public in nature, i.e., partners can limit the sharing and usage of API, without compromising the API quality and encryption.

Composite: These combine two or more APIs’ together to address complex system requirements at the user end.

 

Usage of API:

The main function is to request data from one end and send it to another end, like a request made by the user replied to by the API on a web browser.

API is an updating tool as well which means updating social media, updating servers, adding, or deleting things etcetera. API uses all this through integration property.

Benefits of using API:

--Data Sharing

--Increased Security

--Easy to use


 

How does API function?

REST API: Representational State Transfer. The REST API let the data be shared between the client and server using the HTTP method via a set of functions like GET, PUT etcetera. It is stateless in nature, thus not saving any user data at an end. The REST API has major benefits like integration, innovation, ease of maintenance and expansion. REST API can be made secure via authentication tokens and API Keys

SOAP API: Simple Object Access Protocol. The messages between the client and server are exchanged via the XML method. This is an old API method, frequently used in past, nowadays REST API is more frequently in usage.

RFC API: Remote Procedure Calls. At first, the client input the function/procedure on the server then only the server give output to the client.

WebSocket API: It is another modern API after the REST API. It uses JSON to exchange messages between clients and the server. It supports two-way communication, i.e., a client can send call-back messages to the server, making it more efficient than the REST API.

GRAPH QL API:  It is a special type of query language created for the API exchange of messages only. It is a developer-friendly, fast, and flexible format an easy manner giving an output of required data only neither less than that nor more than asked. It gives free hand to developers for the database's multiple queries, microservices and APIs’, thus making it easy to handle and update developers.

 

API GATEWAY: An API Gateway is a management tool client that will use a broad range of activities. Like all gateways, the API Gateway handles the tasks like user authentication, rate management and statistics overall API calls. For example, Amazon API Gateway.

 

What is API testing?

API testing strategies are like other software testing methodologies. The focus is on validating server responses. API testing includes making multiple requests to API endpoints for performance testing, writing tests to check business logic and function and security testing by simulating system attacks. 

Creating an API: A reliable, flexible, fast and developer-friendly is the prime goal while creating an API.

--PLAN API

--BUILD API

--TEST API

--DOCUMENT THE API

--MARKET THE API

 

 

 

 

 

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