Is REST stateful or stateless?

Stateless http

export default AuthorizationService;export type { Password };In this case we have used a class with a static method to implement our service, but we could have implemented it in another way.The previous example corresponds to a stateless service, because it does not need to store the state of the transaction in memory, it is only in charge of performing the query and exposing the result.We can use our service in the rest of the application as follows:// AuthorizeTransaction.tsximport React from “react”;import AuthorizationService from “../path/to/authorization.service”;

export default authorizationService;export type { Password };In a real application we will probably have dedicated backends for development, staging and production environments. This can be configured within the service itself, so the rest of our application doesn’t have to worry about pointing to the correct backend.Let’s say in our project we have access to environment variables and we can configure a different URL for each environment. Then our service would look like this:// authorization.service.tsimport env from “../path/to/env”;

Stateful vs stateless

export default ItemListThis component uses something that until now we had not used, the Props, which are parameters that are sent during the creation of the component. In this case, a property called product is sent, which must have a name and a price.  Properties, or simply props, are parameters that are sent to a component during its creation. The props can be data to display or information to initialize the state. As a general rule, props are immutable, which means that they are read-only.  To obtain the properties of a component it is necessary to obtain them by prefixing this.props , followed by the name of the property.  Let’s observe that the ItemList component only shows the properties that it receives as parameter, without making any update on it. To complete this example, we will create the App component that will look like this:import React from ‘react’.

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Stateless person

Sockets do not require a request to be sent in order to respond. They allow a bidirectional data flow so you only need to listen to the server and it will send a message when available.

Socket.io provides us with a library that works on both client and server precisely to achieve the bidirectional connection. In this case a client was developed using React. As the goal of the lesson is not to learn react, then we are going to execute the following commands to clone the repository containing the code:

The first step to package the application in a Docker container is to add a Dockerfile to the project. This file is a series of instructions that tell Docker how to assemble an image (installation of dependencies, compilation steps and execution of the application). Let’s take a look at the Dockerfile.

Stateless what is it

In this post, Stateful vs Stateless in Architecture, we are going to see the importance of choosing between two ways to build services and applications, especially when creating a new architecture.

In a world increasingly oriented to create microservices architectures, it is very important to know and differentiate between Stateful and Stateless. That is to say, stateful or stateless services, since depending on the application or service we will have to think about one or the other characteristics and/or resources.

In general, when you start working in a world of microservices and containers, you usually start with stateless applications. This helps to adapt more easily to this type of architectures, and to be able to break and migrate a monolith more easily, and will also allow independent scaling.

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In a world increasingly oriented to microservices and containers it is very important from the beginning to lay the foundations. That’s why in this post Stateful vs Stateless in Architecture, we try to explain the differences between both types of services or applications.