Achieve loose coupling through Dependency Injection
What is tight or high coupling In order to understand tight or high coupling, we need to understand "Dependency". Dependency is an essential component, service, library, or piece of code…
Understanding Microservices – Receiving messages from Queue
In my first post, I shared my understanding of how two services can communicate with each other asynchronously without having a direct dependency on each other. In that hands-on tutorial,…
Understanding Microservices Communication using Message Broker
In my first post, I have shared my understanding of the Microservices. This post can be found here Understanding Microservices Microservices Communication When we break a larger application into smaller microservices,…
CRUD Operations in Node JS using Mongoose – Building Chart of Accounts
In one of my previous posts, I setup an express server in node.js and wrote controller and router. In this post, I will be using the same code repository and…
Building a RESTful API with Express.js: Adding GET, POST, PUT, and DELETE Endpoints
In one of my previous posts, I setup an express server in node.js. That post can be found here. In this hands-on, I will be modifying the same code and will…
Asynchronous Programming in Node.js
What is asynchronous programming? In order to define asynchronous programming we need to understand what is synchronous programming.In synchronous programming, code is executed line by line in a sequence. So…
What is middleware and how to use it using Node.js
In my previous hands-on, I set up an express server using Node.js and added a very basic "Get" endpoint which returns a response. This hands-on can be found here.Now, In…
How to create Express Web app using Node.js
This is a very basic hands-on tutorial to set up the express server up and running using node.js. It involves a few steps and the server will be up and…
Given a square matrix, calculate the absolute difference between the sums of its diagonals
In this problem, we will be provided a square matrix and we need to find the sum of the diagonals from "Left to Right" and then from "right to left",…
Understanding Microservices
In this section, I will share my understanding of Microservices, what problem does it solve and how to migrate an existing monolith application to this architecture. What is Microservice Microservice…