HTTP Methods

Web Request Pipeline

The web request pipeline refers to the sequence of steps that occur when a client requests a web server. The server then processes the request and sends a response to the client. The pipeline includes the steps such as routing, authentication, authorization, request handling, and response generation. Modern web frameworks use the pipeline architecture which involves various middleware components and requests pass through them. Requests which can be inspected, transformed, modified or even terminated in the pipeline. GraphQL should be placed after authentication middleware or module. This is to provide access to the same session and user information in the HTTP endpoint....

URL and Routes

URL stands for Uniform Resource Identifiers, which are strings of characters used to identify resources on the web. They consist of two main parts: the protocol (e.g., http:// or https://) and the resource’s location (For Example: ., www.geeksforgeeks.org). Routes, on the other hand, are paths defined within a web application that map incoming requests to specific handlers or controllers responsible for processing those requests. For example, in a web application for an online store, the route “/products” might be used to display a list of products, while the route “/cart” might be used to manage the shopping cart. Now, in case of GraphQL applications, graphql server operates on a single URL of the API endpoint to perform all database operations. This URL is “/graphql” for most cases, however, developers can change the route as per their need. In GraphQL, data is organized as an entity graph, which means each piece of data is connected to others in a network, unlike in REST where data is accessed via URLs....

HTTP Methods

HTTP Methods are also known as HTTP which signifies the action to be performed on a resource....

HTTP GET Request

When we are using a HTTP GET request to execute a GraphQL query,...

HTTP POST Request

GraphQL POST request use the application/json content type. A standard GraphQL POST request have the structure where the request body should be a JSON encoded object with the following fields,...

HTTP Response

Regardless of the request method, the response should be returned in the body of the response in JSON format. The payload contains,...

Implementation Using GraphQL in a Java Spring Boot Application for Book Management

Let’s consider the following Java Spring Boot application, where we are using a relational database to store book details and we are using GraphQL dependency to interact with the database....

Conclusion

Using GraphQL provides developers the privilege to communicate with database using a single HTTP endpoint. HTTP methods like GET and POST is used to interact where GET is used to fetch data and POST is to send data. Responses follow a consistent JSON structure containing “data” and “error”. Following conventions and using best practices, developers ensure consistent and better communication between client and servers, integrating GraphQL into web applications....