Understanding how javascript evaluates different values as truthy or falsy is an essential need in day to day coding. Truthy and falsy values in javascript are used in if blocks, ternary and OR (||) operators and null coalescing (??) operator. To understand truthy and falsy values in javascript, we will declare multiple variables of different types. To check for exact…
Javascript map, reduce and filter functions are some of the useful array functions in javascript. These are the higher order functions which takes a callback function as their parameter. Javascript map() function The javascript map() function is an array function which iterates through the array and executes the provided callback on each element. The map function returns an array which…
In this blog post, I will walk you through the simplest way of setting up a nodejs application with expressjs and typescript to run inside a docker container. Git repository for this post is available here. We will complete the setup by following below steps: Creating a simple NodeJS application with express. Adding typescript support to express app Containerize express…
In this guide, we will see how a NodeJS and MySQL web application can incorporate user registration and login feature. We will use bcrypt to hash the password and JWT for token generation. In this post, we will not create any HTML page or template. Instead, We should consider it as a process to add login and registration functionality in…
In this guide, We will learn about seeding data in MySQL table using Sequelize ORM and faker.js. Seeding a table simply means adding fake data in the database for testing and demonstration purposes. In our last post, we did setup Sequelize with NodeJS application and created the table Users. We should start from there and add more columns to the…
If you are willing to use MySQL with your Node App, this guide will show you how to use Sequelize with Node and Express. In my opinion, Sequilize ORM is the best way to use MySQL with Node. Sequelize offers features like Migrations, Seeders and Relationship management. These features are handy when you are in need of a quick working…
Using Redis as a cache for MongoDB queries in NodeJS can make your application super fast. The reason for faster access is due to the fact that Redis stores data in memory while MongoDB stores data in disk. Where Caching is useful ? Caching is useful in all scenarios where we need to access the same data frequently. In an…