What is web api – Troubleinthepeace


Currently API in general and Web API in particular are being used more and more. Today’s increasingly distributed, language-independent modern application architecture has driven API adoption. So What is API? What are its origins and advantages?

What is API?

API are methods and protocols for connecting with other libraries and applications. It stands for Application Programming Interface – application programming interface. The API provides the ability to provide access to a set of frequently used functions. And from there it is possible to exchange data between applications.

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Where do APIs usually apply?

Web API: is the API system used in website systems. Most websites have applications to Web APIs that allow you to connect to, retrieve data, or update databases. For example: You design login function through Google, Facebook, Twitter, Github… This means you are calling API’s. Or like mobile applications, all get data through APIs. APIs on the operating system: Windows or Linux have a lot of APIs, they provide API documents that specify functions, methods as well as connection protocols connect. It makes it possible for programmers to create application software that can interact directly with the operating system. API of a software library or framework: An API that describes and specifies the desired actions that libraries provide grant. An API can have many different implementations, and it also makes it possible for a program written in one language to use a library written in another language. For example, you can use Php to ask a library to generate PDF files written in C++.

The API can be used for computer hardware, or software library, database system, web-based system, operating system. In addition, APIs come in many different forms, but generally include a number of specifiers for: data structures, variables, object classes, routines, or remote calls.

Documentation for APIs is usually provided to facilitate implementation and use. Web API currently being used by large enterprises for their customers or within their own companies.

Some other concepts:

APIs are now compliant with REST and HTTP standards, making it more user-friendly for developers. Make it easier for users to access and understand. Modern Web APIs are intended for specific audiences, such as mobile developers, with different documents and versions.API key: This is the type of code (string) transmitted by computer programs called APIs to identify the program, its developer or its user to the website. API keys are used for the purpose of limiting and controlling API usage. Such as preventing API abuse.

API Key typically acts as a unique identifier and secret token for authentication, and will typically have a set of permissions on the API associated with it. API Keys can be based on a globally unique identifier (UUID) system to ensure they will be unique for each user.

What is Web API?

Web API is a method used to allow different applications to communicate and exchange data back and forth. The data returned by Web API is usually in JSON or XML form over HTTP or HTTPS protocol.

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Highlights of Web API

Web API fully supports restful methods: Get/Post/put/delete data. It helps you to build HTTP services in a very simple and fast way. It also has full support for HTTP components: URI, request/response headers, caching, versioning, content format.

Product automation

With web APIwe will automate task management, update workflow, help increase productivity and create higher work efficiency.

Flexible integration capabilities

API allows to get content from any website or application easily if allowed, increasing user experience. The API acts as a gateway, allowing companies to share selected information while avoiding unwanted requests.

Real-time information updates

The API has the functionality to change and update changes in real time. With this technology, data will be transmitted better, information is more accurate, service provision is more flexible.

There is a common standard that is easy to use

Any user or company can adjust the content and services they use.

Fully supports MVC components such as: routing, controller, action result, filter, model binder, IoC container, dependency injection, unit test.

How does Web API work?

The first is to build an API URL so that a third party can send data requests to the server providing the content or service through the HTTP or HTTPS protocol. At the web server providing the content, the source applications will do it. check the validation if available and locate the appropriate resource to generate the content that returns the result.Server returns the results in JSON or XML format via HTTP/HTTPS protocol.Where the original request is located is the application. web or mobile app, the JSON/XML data will be parsed to get the data. After obtaining the data, perform further operations such as saving the data to the Database, displaying the data…

Talking more about Web API, nowadays website developers often write their own API for their own projects. Mainly for manipulating the Database built from the previous product, in order to serve the same features in other projects in the future (For example Api to get information on the entire article by date). It is also known as reuse of resources that the company has built or uses APIs from providers like Microsoft or Google, the most typical and popular can be mentioned as Google Maps API or Facebook Api …

Advantages and disadvantages of Web API

Each application has its own advantages and disadvantages, good support for applications. So the web API is no exception:

1. Advantages

Web API is used mostly on desktop applications, mobile applications and website applications. Flexibility with data formats when returning the client: Json, XML or other format. Quickly build HTTP service: URI , request/response headers, caching, versioning, content formats and can be hosted in the application or on IIS.Open source, supports full RESTful functionality, used by any client that supports XML, Json.Support Full MVC components such as: routing, controller, action result, filter, model binder, IoC container, dependency injection, unit test. Two-way communication is confirmed in transactions, ensuring high reliability.

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2. Cons

Because the web API is still quite new, it is not possible to evaluate the disadvantages of this model much. However, there are two obvious downsides:

Web API is not completely RESTful service, only supports default GET, POST To use effectively requires in-depth knowledge, good backend experience Takes time and costs to develop, upgrade and operateYes may encounter security problems when the system is attacked if the conditions are not limited carefully.

The next advice is that you should read more articles below to update your entire knowledge of the API:

Category: FAQ

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