Long, long ago, way back in 2025, QuantaSneaks 900👟 was launched. At that time, the architect decided to use an event-driven system for the shopping functionality. In this blog post, we will understand how event-driven systems can be used to create an e-commerce application and implement it with the help of AWS CDK. Requirements for … Read more
Passkeys are replacing passwords. Cognito’s Hosted UI supports them out of the box.But Cognito also supports building a custom login page. I spent a weekend figuring out how to bring that same passkey experience to a custom login page. In this blog post, we will understand how passkeys work and how to create a custom … Read more
AWS Lambda Durable Functions rely heavily on checkpointing. Information such as the durable step type, name, input, result, and timestamps is checkpointed. And this checkpointed information is the key ingredient behind the flawless replay and retry mechanism of durable functions 💪🏼 Now, information can’t be stored in the checkpoint as it is. It first needs … Read more
QuantaSneaks is an AI-enabled shoe company famous for its x-factor worldwide. After the immense success of its predecessor, the revolutionary QuantaSneaks 1000 👟 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 🤔), 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 💪🏼 But then a new requirement … Read more
In this hands-on tutorial, we will see how to create JWT using AWS KMS Asymmetric Key. Step 1: Create Base64-URL Encoded JWT Header & Payload Step 2: Create String to Sign Step 3: Hash the Data Step 4: Sign with AWS KMS Step 5: Generate JWT GitHub:- https://github.com/TrickSumo/AWS-KMS-Course?tab=readme-ov-file#asymmetric-encryption-example—create-jwt Thanks 🌿
AWS Key Management Service (KMS) is used to create, manage, and audit cryptographic keys. In this hands-on course, we’ll break down core KMS concepts and implement two mini projects to bring theory into practice. Prerequisites To follow the mini-projects confidently, you should know how to build a basic serverless CRUD app: Course Structure – What … Read more