Our Tutorials

We love perfecting our craft. We share our knowledge through sagas.
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Glue
Data Engineering

AWS Glue - CD, Code Resuability and Saving Money

September 4, 2023
Mohammed Ali Chherawalla
Software Engineer
AWS
NodeJS

[Part 3] Executing batch jobs in a multi-container environment using NodeJS and express

July 23, 2025
Mohammed Ali Chherawalla
Flutter
Mobile

Writing Tests in Flutter {Part 3} : How to write golden tests in Flutter

The final part in the 3 part series on writing tests in flutter touches upon writing golden tests. Although similar to widget tests, golden tests actually verify the visual appearances of widgets.

July 23, 2025
Dart
Testing

Writing Tests in Flutter {Part 2} : How to write Widget Tests in Flutter

The part 2 of the three-part series on writing tests in Flutter is all about writing widget tests. This tutorial goes over the types of widget tests and learning to write testable widgets. Dive in!

July 23, 2025
AWS
Backend

When Less is More: Serverless NAT Gateway - Part 2

In continuation to Part 1 of this series, this part focuses on creating a CD pipeline in GitHub and deploying the serverless templates (CloudFormation templates) to create your lambda functions. Dive in to learn more.

July 23, 2025
Kotlin
Android

The Definitive Guide to Testing Coroutines and Kotlin Flows

The definitive guide on creating testing setup for coroutines and testing Kotlin flows.

July 23, 2025
Flutter
Mobile

Writing Tests in Flutter {Part 1} : How to write Unit tests in Flutter

A three-part series highlighting how to write tests in flutter. The series goes over Unit Tests, Widget Tests, and Golden Tests. Lets dive in the first part on writing unit tests.

July 23, 2025
DevOps
AWS

When Less is More: Serverless NAT Gateway - Part 1

Serverless architecture offers developers a variety of advantages that prove attractive in the development of large, scalable applications. S3: This tutorial goes over how to create an AWS lambda function using the Serverless framework, configure webpack as well as AWS resources.

July 23, 2025
AWS
Backend

Running migrations for an Aurora Serverless cluster

In this tutorial, we'll set up and run database migrations for a ToDo application against a PostgreSQL Aurora Serverless Cluster.

July 23, 2025
React
AWS

React: Set Up User Acceptance Testing Environment for Pull Requests

In this tutorial, you will learn how to create a UAT environment for a React application every time a PR is created to the default branch.

July 23, 2025
React
Frontend

React to the React App : How To Hard Reload Your React Web App Using Error Boundary

Errors are inevitable when it comes to creating a web page. Usually, a user would need to manually reload in case of error. This tutorial talks about how setting up a reload button in case of an error could help the user and nudge them into recovery. More specifically a “Hard reload button” i.e. a button that fetches the webpage from the server instead of the cache.

July 23, 2025
Webdev
React

[Part 3] A proactive approach to handling application errors

In this tutorial, I will take you through how to integrate sentry in your React application. We will also go over how to upload source maps, suspect commits using Webpack.

July 23, 2025
S3
Frontend

[Part 2] A proactive approach to handling application errors

In this tutorial, you will learn to integrate sentry in your React application. You will also learn how to upload source maps, suspect commits, and use Github Actions for automation

July 23, 2025
NodeJS
Apis

[Part 1] A proactive approach to handling application errors

In this tutorial, I will take you through how to integrate slack alerts for failures in your application. We will also go over how to associate an ID for each incoming request to the server. We will use the requestID in the slack alerts for easy debugging.

July 23, 2025
DevOps
AWS

[Part 2] Set Up User Acceptance Testing Environment for Pull Requests

In this tutorial, you will learn to add a fallback index.html file and redirection logic for the UAT react build. This tutorial is Part 2 of the series in "Creating an environment for User Acceptance Testing on the creation of a Pull Request".

July 23, 2025
Backend
AWS

[Part 2] Executing batch jobs in a multi-container environment using NodeJS and express

This tutorial explains how to set up CRON jobs in a multi-container environment using Nodejs and Express.

July 23, 2025
NodeJS
Backend

[Part 1] Executing batch jobs in a multi-container environment using NodeJS and express

This tutorial explains how to create a mutation that schedules jobs to be executed after a set amount of time. By the end, you can test out your newly created scheduler by changing the value of scheduleIn and message.

July 23, 2025
Integration Tests
Nodejs

Node App Integration Tests with Docker, Redis & PostgreSQL

Say goodbye to mundane and unrealistic test data, and embrace the flexibility and versatility of Dockerized integration tests. Whether you're working on a small project or a large-scale application, Docker and `jest` with `docker-compose` can become your trusted allies in building robust, reliable, and scalable software.

July 23, 2025
Postman
Aurora

How to write postman tests and execute them as a part of your CI

Traditionally building, deploying, and testing (white box) the API were done in a decoupled manner. In this tutorial, we explain how to write tests using postman during the development phase and integrate the collection as a part of your CI pipeline.

July 23, 2025
Aurora
AWS

AppSync: Resolving mutations directly off of Aurora Serverless

In this tutorial, we will take you through how to resolve create mutations directly off of the database and return the newly created entity.

July 23, 2025
Node
AWS

How to Use AWS Copilot

Learn how to setup Copilot, deploy a containerized application, deploy an update and find out how to add incremental changes to the application right from the CLI.

July 23, 2025
ECS
AWS

Guide to Deploying Your App to ECS with Github Actions

In this tutorial, you will learn how to automate deployments to ECS using Github Actions, with support to deploy to different environments.

July 23, 2025
React
Frontend

Selenium E2E Tests with Chrome Extension

In this article you should understand how to use the selenium chrome extension to record user actions. Using this, you can get the code needed to select the right DOM element and perform an action similar to what the user would do.

July 23, 2025
Glue
Data Engineering

AWS Glue - CD, Code Resuability and Saving Money

Struggling with complex data integration challenges? Learn how AWS Glue simplifies data engineering, offering a versatile ETL solution with custom code capabilities for greater flexibility and efficiency, all while ensuring a robust CI pipeline.

July 23, 2025
AWS
Backend

Creating and managing an AWS MSK Cluster and Configuration

Apache Kafka is an open-source, distributed event streaming platform. Businesses use it to build distributed applications that require real-time data processing and/or analytics. Kafka helps you build async event-driven systems. It behaves like a broker. Listens to messages and broadcasts them further for consumption. A simple example of an event is a user signing up for your service or adding some data to a form. They have some associated information (state with them). Kafka works with a philosophy that the right information is at the right place at all times~~ This tutorial assumes a good understanding of Kafka and how to configure it. We will go over deploying, & updating an Apache Kafka service (clusters and configuration).

July 23, 2025
The Wednesday Newsletter

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2025