Rishi 
Finally, a long-awaited feature of AWS Cognito is here. Now, Cognito user pools support the rotation of refresh tokens. In this post, we’ll understand what has changed and how to implement it in your projects. What is a Refresh Token? And What Was the Problem? After successful user authentication, the Cognito user pool returns an … Read more
In this tutorial, we will use AWS services to create a serverless application for a coffee shop. The user (coffee shop owner in this case) can authenticate using AWS Cognito and manage inventory (perform CRUD operations). Github Repo: https://github.com/TrickSumo/AWS-CRUD-Serverless Why Serverless? AWS-managed serverless services like Lambda, Cognito, and Api gateway scale down to zero when … Read more
AWS Key Management Service (KMS) allows you to create/manage encryption keys that are used to encrypt/decrypt and sign/verify data. AWS internally uses KMS across many services for encryption, so even if you’re not familiar with it, there’s a high chance you’ve already used it while working with other services (like while creating an S3 bucket!). … Read more
Recently, Microsoft announced Majorana 1 quantum processor that uses topological conductor to create quantum computers that can scale to a million qubits. In this post, we will decode why there is so much hype around Majorana 1 and understand how it works using simple analogies. Quantum computers utilize phenomena of quantum mechanics (ie, superposition, entanglement, … Read more
![[SOLUTION] Upload failed readableStream.getReader is not a function TypeError readableStream.getReader is not a function getAwsChunkedEncodingStream getAwsChunkedEncodingStream.png](https://i0.wp.com/tricksumo.com/wp-content/uploads/2025/02/SOLUTION-Upload-failed-readableStream.getReader-is-not-a-function-TypeError-readableStream.getReader-is-not-a-function-getAwsChunkedEncodingStream-getAwsChunkedEncodingStream-1.png?fit=1280%2C720&ssl=1)
Recently I faced a problem with AWS Cogntio JS SDK V3 for S3 buckets. While calling PutObjectCommand from SDK, an error occurs with the message TypeError: readableStream.getReader is not a function. On googling the error, I found this GitHub thread Angular 19 PutObjectRequest readableStream.getReader is not a function, where repo maintainers confirmed that the issue … Read more
AWS Cognito is a robust tool for implementing an authentication and authorization layer on your application. In this course, we will understand Cognito offerings (User Pool and Identity Pool), different ways to use Cognito with your application (OAuth2.0 and SDK), and at the end will use our learnings to create a secure file-sharing application (ShareMyFiles). … 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 “ 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 😮). Let’s dive in!!! Why useState Hook? React does not detect change in normal variables that’s why useState hook is required. … Read more
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