![]() ![]() Web services are portrayed by their great extensibility and interoperability, as well as their machine-processable descriptions, thanks to the use of XML. As outlined by the World Wide Web Consortium (W3C), web services give a standard means of interoperating between software applications operating on a variety of platforms and frameworks. Web services are client & server applications that interact over the World Wide Web’s HyperText Transfer Protocol (HTTP). Where private is only used internally in the organization, public API enables third parties to build an app that interacts with the API of your application, and the partner API is shared with certain business partners to gain additional revenue streams without risking quality. They are of three types: private, public and partner. API security is all about API management that includes the use of an API Gateway. In short, it opens up access to the resources while maintaining control and security. APIs are a simplified manner to connect an application infrastructure via cloud-native development and also allows sharing of data with customers or other external users. It simplifies the app development process while saving both time and money. It can communicate multiple information to the user, like, data that needs to be shared and the function that needs to be provided.Īn API enables the application to communicate with other services or applications without having the knowledge of their implementation. It is a method of communication between a requester and a host that is mostly accessible through an IP address. Simply put, An API is a messenger that takes a request and tells the system what the user wants to do and then returns the response. It is a secure way to request and share information, services, and functionalities within both internal and external users. It can be used to call single or multiple services depending upon the architecture of the application. What are APIs?Īn API (Application Programming Interface) is a communication channel between services and applications. Some of the microservices that own data of the project page are: Shopping Cart Service, Order Service, Catalog Service, Inventory Service, Shipping Service, Review Service, and Recommendation Service(s). On the other hand, in the application using microservices architecture the data displayed on the product page is owned by different microservices. While in the monolithic web app, a client would retrieve this data through a REST call to the application that will trigger a load balancer to route the request to the identical instances of the application that would query numerous databases and then return the response. Now let’s assume you are developing a web application for shopping and for that you will need to add a product description page that will not only display the information related to the given product but also display a lot of other information including order history, customer reviews & ratings, low inventory warning, number of items in the cart, shipping options, other products recommendations and alternatives to the current product. Basic Concepts to Understand API, Web Services & Microservicesīefore we move ahead to understand these three terms, it will be helpful to acknowledge the components web applications have and how they work. Now with a clear understanding of how an application works, it’s time to get into the details of APIs, web services and Microservices so that you can clearly know the meaning of these terms that will come ahead and relate to it. The worker mentioned in the controller section is nonetheless the service that receives the request from the manager, figures out the algorithms or logic that will be used to complete the request, only responsible for the work allotted and returns the completed work to the manager. While a controller is like a manager that manages incoming requests, decides which worker should do the work, divides the work into smaller tasks, passes that work off, orchestrates the work and sends it back to the client. It is responsible for authentication, load balancing, monitoring, caching, static response handling and so on whenever a client-side wants to interact with the web application. Here, a gateway is a single entry point to the application. Typically, a web application operates with three major components, that are, services, gateway, and controller. So today’s article is entirely dedicated to the individuals who have heard about these terms but are confused about the purpose each has. Some people are still unaware of the basic concept, usability and working of three different concepts. Developers have been using three major building blocks for the development of web apps, namely, APIs, Web Services, and Microservices. ![]()
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