Razorpay
Introduction If you are building a website or app and want to accept online payments in India, Razorpay is one of the most popular choices. Razorpay helps you accept: UPI Credit and debit cards Net
Jul 8, 20269 min read
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Razorpay
Introduction Welcome to Part 2 of the Razorpay developer guide. In Part 1, we learned: how Razorpay works important terms (Order, Payment, Signature, Webhook) security rules correct payment archit
Jul 8, 202612 min read
OneKey Classic 1S Review
Why I Bought It I’d been looking for a hardware wallet for a while. There are so many options, but most felt either too expensive or not transparent enough. Then I came across OneKey. A few things sto
Jun 14, 20265 min read6
AWS CDK - Part II
Imagine you're building a house. Normally, you'd write down a detailed blueprint on a piece of paper (like a CloudFormation template in YAML or JSON) and hand it to the construction team. That works,
May 2, 202610 min read10
AWS CDK
When people start using AWS, they usually begin with the console. Click here → create bucket Click there → create server It works, but after a while: You forget what you created You can’t track chan
Apr 29, 20264 min read
AWS Services: Practical Use Cases Made Simple
Now that you understand what these services are, let's explore exactly when and why you'd use each one in the real world. 1. Amazon VPC (Virtual Private Cloud) - Your Private Network When to Use It:
Mar 5, 20269 min read8
Rust Week 2: Diving Deep into Ownership, Collections, and Error Handling
My journey through the core concepts that make Rust unique and powerful Introduction Welcome back to my Rust learning journey. After getting comfortable with the basics in Week 1, Week 2 was where th
Feb 22, 202616 min read15
My Rust Learning Journey (From Basics to Traits & Generics)
What is Rust 🦀 I've been diving into Rust lately, and it has been quite an adventure. Rust runs as fast as C/C++ but catches many bugs before your code even runs. When I first started, something clicked for me pretty quickly: Rust isn't really hard...
Feb 15, 20269 min read21
UPI Architecture Explained: NPCI, Banks & Transaction Flow
From Simple QR Scans to Complex Bank Settlements - The Full Story At a Glance: 14+ Billion transactions monthly 2-3 Seconds per transaction 99.5% success rate 300+ Million active users 0 Cost for consumers Chapter 1: The Simple View - What Us...
Dec 10, 20258 min read28