Recently we had a requirement in our NodeJS API — to return an array of objects, each of which was a subset of the original object. If that sounded cryptic, the example will help illustrate. Our original data was something like this. [ { "id": 1…

In addition to the observations I had made in my previous write-up, I see two other things that developers do, which lead to unexpected results and hours of troubleshooting. Demystifying setState Take this contrived simple app to book a room.

While reviewing solutions for our react programming test that we give for candidates applying to our organisation, I observe the following mistakes fairly consistently. Component changing uncontrolled input to controlled This is the typical warning

Prologue It was an hour before our client demo. I did a new Business Provider registration (one of four types of users in our application) and then tried to login as this registered user. I got an authentication failure — Invalid Username or Password. I tried a couple of times, thinking…

We are building a react app for one of our customers. Like typical new react apps today, we decided to use typescript to build our app. We also decided to use redux for state management. Having done similar apps before, we quickly built the first few features. Like typical apps…

For the background behind this, read this. Co-WIN has published a number of public (readOnly) APIs. I wanted to use these to book myself a vaccine slot. The general approach was this Call the API and get the response Examine the response and filter it for relevant data Send data Choice of technology …

If you are like me who picked up java when it was released a quarter of a century back, chances are that you will appreciate this. The backend for one of our projects is in java and spring boot. As part of best practices of software development, we configured our…

Laravel, one of the most popular php framework had a new release on 8th September — Laravel 8. We have a couple of applications, whose backend is in laravel. I had previously written about how we upgraded them to the latest version of the framework (at that time). It was…

We use an E2E public cloud system to run our website, some of our internal applications as well staging instances of the applications that we develop. The applications use various technologies — html, php, ruby, python, nodejs, java as well as docker container. We use nginx and run each application…