Invoices. When most of us look at them, we briefly examine the descriptions, the costs, and then the total. If it aligns with our expectations, it ends there. Seldom, though, do we appreciate what goes into the creation of each line item. If we consider the charge for a burger…

In this blog, we will learn how to send emails using Nodemailer. This is a module that allows us to easily send emails in NodeJS applications. What is Nodemailer? Nodemailer is a simple module to send emails for NodeJS applications. It is a single module with zero dependencies. Using Nodemailer, we can send…

According to IBM, “A message broker is software that enables applications, systems, and services to communicate and exchange information.” Today, we are going to see how to set up an SSL/TLS enabled RabbitMQ server. What will we cover? About RabbitMQ RabbitMQ Installation and RabbitMQ User Creation Access RabbitMQ Management Web…

When Flutter was launched, the architecture pattern initially followed was called the ‘Bloc’ pattern. This is still widely used in the Flutter community today. In this article, we will look at creating a login screen. …

What is gRPC? gRPC is an open-source Remote Procedure Call, initially developed at Google in 2015. In 2017, it became a Cloud Native Computing Foundation (CNCF) incubation project due to increasing popularity. The gRPC framework is used to build scalable and high-performance APIs. Many top organizations leverage it to power their user cases…

Unit testing refers to the process of testing each individual component of a software separately. Through unit testing, the performance of unit components can be validated. It involves writing code that runs each component of the software to ensure that everything is working correctly and as intended. This ensures that…

While working for one of our (DLT Labs) products, I recently got a chance to explore a complex system design of push notification integration that included Node backend, middleware like Amazon SNS, Firebase, and front-end Flutter (iOS & Android). The problem I will try to send push notifications from the backend to…

In the past, companies usually had a Development team that would write the actual application/software, and an Operations team that would set up/rack servers in a data center. There’s a slight change to this process, which has proved to be a game-changer. Problem with Infrastructure The problem with setting up the underlying infrastructure…

Many times, we may need to download data into an Excel file quickly. In this blog, we’re going to talk about how to do so using Node.js. Exporting JSON to an Excel file is a very common use case for backing up important data or moving data between two different…