Posts on Geshan's Blog Page 7

Jest has been the most popular testing library for JavaScript for the last 5 years. You can use Jest each to write fewer tests and get more test code coverage. In this post, you will learn how to use the Jest’s each method to write efficient unit tests that result in better code coverage. Let’s get started!

Deno is a relatively new runtime environment for JavaScript and TypeScript that has gained some attention in recent years. Docker is the leader in the container world and is the defacto tool for building, shipping, and running applications in containers. In this post, you will learn how to run a basic Deno application with Docker and Docker Compose. Let’s dive in!

JavaScript try catch is an essential tool for handling errors and exceptions in your code. It provides a mechanism to gracefully handle unexpected situations and prevent your program from crashing. In this comprehensive beginner-friendly guide, you will delve into the intricacies of JavaScript's try...catch mechanism, giving you a clear understanding of how to handle errors gracefully with useful examples. Let’s get started!

Renaming a column in Postgres might seem straightforward, but as your database grows and your application scales, it's crucial to consider the impact of these changes. A simple rename can cause downtime or even break your application if not executed correctly. This post delves into the intricacies of renaming a Postgres column, providing a clear path from a basic example to a real-world scenario with zero downtime.

RabbitMQ is one of the most popular open-source message brokers in use today. Knowingly, unknowingly you would be using RabiitMQ under the hood of many applications that you use daily. In this beginner-friendly post, you will learn how to use RabbitMQ with Docker and Docker Compose, let’s get started!