Posts

How to send email using Node.js and Nodemailer?

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Hello everyone, today we will learn how to send email using Node.js and Nodemailer . Here I am using the Nodemailer module to send an email. Nodemailer is a module for Node.js applications to send the email easily.  Prerequisites You will need to have Node.js and npm (Node Package Manager) installed locally. You can install these packages from Node.js' official website. https://nodejs.org/en/download/ Getting Started Install Nodemailer using the following command. npm install nodemailer After you have downloaded the Nodemailer module, you can include the module in your application: var nodemailer = require( 'nodemailer' ); Now we are ready to send emails from your server. Use the username and password from your selected email provider to send an email. This is a complete example to send an email with plain text and HTML body. var nodemailer = require( 'nodemailer' ); var transporter = nodemailer.createTransport({ service: 'gmail' , auth: { u

Enterprise application development and microservices

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Hello everyone, Today we will see, Enterprise application development and microservices. Introduction to microservices by putting the pieces together  Once you’ve deployed a microservices web application to Kubernetes, you can expect it to look something like this: A utilizer accesses the web application through an Ingress load-balancer provided by Kubernetes. It gets routed to the web application served by Node.js, which uses two other microservices on the back end, a Java authentication service and a Python image processing service. This is just one example of how a microservice-based web application might look within a Kubernetes cluster. Microservices  is an architectural style that structures an application as a collection of services that are, Easier to Build and Maintain Apps The main conception behind the microservices architecture is that some types of applications become more facile to build and maintain when they are broken down into more minuscule, composable pieces that co

Twilio + SpringBoot: How to send SMS and voice calls using Twilio and SpringBoot?

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Hello everyone, today we will learn how to send SMS/voice calls using TWILIO and SPRING BOOT. We know, with the increase in the number of mobile devices around the globe today, and numerous mobile applications available to us, SMS is becoming the de facto standard for verification.  Let's begin our hunt by creating a free account on Twilio , click here   After successful registration go to your dashboard, there you can find your ACCOUNT SID and AUTH TOKEN, It is quite simple, right? 👍 Next, we are going to explore how to use Twilio for sending SMS in a Spring Boot application. Prerequisites   Twilio account  Springboot Maven/Gradle  Postman for testing Eclipse Project structure: Project Dependency -  pom.xml(maven): <?xml version = "1.0" encoding = "UTF-8" ?> <project xmlns = "http://maven.apache.org/POM/4.0.0" xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation = "http://maven.apache.org/POM/

Twilio+Node JS: How to send SMS and voice calls using Twilio and Node JS?

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Hello everyone, today we will learn how to send SMS/voice call using TWILIO and NODE JS. We know, with the increase in the number of mobile devices around the globe today, and numerous mobile applications available to us, SMS is becoming the de facto standard for verification. Let's begin our hunt by creating a free account on Twilio , click here After successful registration go to your dashboard, there you can find your ACCOUNT SID and AUTH TOKEN,  it is quite simple, right? 👍 Next, we are going to explore how to use Twilio for sending SMS in a Node.js application. Prerequisites Twilio account Node JS  NPM  Postman for testing Application directory structure package.json  A package.json is a JSON file that exists at the root of a Javascript/Node project. It holds metadata relevant to the project and it is used for managing the project's dependencies, scripts, version, and a whole lot more. { "name" : "node_app" , "version" : "1.0.0"

Java - RSA + AES a double layer security system - Architecture + Implementation example

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Hello everyone, today we will learn a double-layer security system using RSA+AES in Java, with the help of architecture visualization and one java example. Encryption's primary purpose is to protect against brute force attacks. It is composed of a cipher, the message/data, and a key (the password). With a wide range of free tools available like(Aircrack-ng, John the Ripper, Rainbow Crack, and L0phtCrack ), even baby hackers can attempt to hack passwords using brute force. In my opinion, as a layperson in cryptography, multiple double-layer encryptions may not increase security, but it may slow down attackers. Using encryption may cause performance issues. Or maybe not. It really depends on how you use it. If you understand just how "expensive" each part of your enterprise encryption operation is, it's possible you can avoid the expensive parts and dramatically increase the performance of your applications. Let's see the architecture of the RSA + AES system This is