QuantaSneaks is an AI-enabled shoe company famous for its x-factor worldwide. After the immense success of its predecessor, the revolutionary QuantaSneaks 1000 đ is being launched in a weekend sale. The social media campaign is set up, and there is no doubt that sales are going to be record high. However, the team is concerned … Read more
AWS exams can be quite costly. Especially if it’s your first certification exam and you don’t have 50% discount code. In this blog post, I will share active AWS certification discount vouchers for 2026. Udemy AWS Exam Vouchers As of May 2026, Udemy is offering exam vouchers for foundational and associate exams at a discounted … Read more
When you hit the “Place Order” button, that event triggers a series of steps, including inventory reservation, payment processing, and shipping initialization. Now, suppose your card is charged by the payment service (Stripe đ€), but the API call to the third-party shipping service failed. Modern systems don’t live inside a single database anymore. You can’t … Read more
For a durable Lambda function, standard errors at any step are checkpointed and handled during the next replay by retry-strategy configurations. However, there can be scenarios where a durable step starts execution but fails to complete, while also leaving no ERROR checkpoint behind. A common example is a Lambda execution timeout. In such cases, step … Read more
Some time ago, I was building a chat application using AWS Websocket API gateway. Things were going smoothly. I created a WebSocket API Gateway, added $connect, $disconnect, and sendMessage/addGroup routes. From the frontend (React) side, everything was fire-and-forget. You send a message, and the onMessageHandler takes care of it đȘđŒ But then a new requirement … Read more
Half star pyramid is the most common pattern which we come across while writing code to print patterns in any language. Take a look at this pattern:- *************** One approach that might come to mind is â the number of stars in each row is equal to the number of row (I mean index of … Read more
In this post, we will see the difference between pure functions and high-order functions in javascript. What are Pure Functions in Javascript? Functions which does not produce side effect are called pure function. This means that it does not depend on any external variable (like global). Also, it does not modify any external variable. Such … Read more
useState is one of the first hooks I came across while learning React. It is easy to understand/use but equally fascinating/confusing at the same time ( just on click of a button, things update on-screen đź). Let’s dive in!!! Why useState Hook? React does not detect change in normal variables thatâs why useState hook is required. … Read more