Writing about development and technology.
Understanding neural network principles through practical project experience. From factory line analogies to backpropagation and hyperparameter tuning.
A practical guide to choosing between Supervised, Unsupervised, and Semi-Supervised Learning when you don't have labeled data.
Understanding AI, Machine Learning, Deep Learning, and Generative AI. Deep dive into Transformer architecture, RAG vs Fine-tuning, Ethical AI, and a practical roadmap for developers transitioning to AI Engineering.
How I lost my data due to a simple SQL Injection. Why Prepared Statements are the only silver bullet and if ORMs are truly safe.
A Masterclass in API Design. Covers Constraints, Safe/Idempotent Methods, Content Negotiation, Versioning, Security, Glossary, and FAQ.
My admin account was hijacked because of a single comment on the board. I dive deep into the 3 types of XSS (Stored, Reflected, DOM) and concrete defense strategies in React/Next.js environments, including HTML Escaping, CSP, and Cookie Security.
I just clicked an interesting link, and money was transferred under my name. My journey to understanding CSRF, the sneaky attack that exploits your logged-in session.
I thought adding a 'Login with Google' button would be easy. Instead, I faced Redirect URI errors, State parameters, and HTTPS issues. I share the 4-step 'dance' of OAuth 2.0, practical solutions with NextAuth.js, and how to handle mobile deep linking.
Users complained about getting logged out after I scaled the servers. Here's my journey from Sticky Sessions to Redis Store, and finally to JWT.
The definitive guide for Architects. Covers Storage Engines, Distributed Systems Theory (CAP, PACELC), Transactions, Sharding, Glossary, and FAQ.
Clarifying the confusion between login and permission checks through real security incidents and the 'Airport Security' analogy. Deep dive into JWT structure, OAuth 2.0, and Authentication strategies in Microservices.
Understanding high availability and read performance improvement through database replication
Understanding database sharding and handling massive traffic through practical experience
I wasted 50% of my disk space because I didn't know the difference between Copy and Link. Deep dive into Inode, the secret of `rm` command, and why `pnpm` is faster than `npm`.
Add one small feature and suddenly your DB CPU hits 100%. The culprit is usually the N+1 problem caused by ORM's Lazy Loading. Here's how to diagnose it, cut 1000 queries down to 1, and avoid the ORM mistakes that cause it.
How OS creates the illusion of multitasking. Preemptive vs Non-preemptive, The Starvation problem, and how modern OSs use Multi-Level Feedback Queue (MLFQ) and Red-Black Trees (Linux CFS) to keep everyone happy.
Hardware vs OS Virtualization. A deep dive into Hypervisors (Xen, KVM) vs Containers (LXC, Docker). Includes Glossary, FAQ, and Cost Analysis.
Understanding database connection pooling and performance optimization through practical experience
Understanding database transactions and ACID properties through practical experience
Definitely No, Maybe Yes. How to check membership in massive datasets with minimal memory using Bit Arrays and Hash Functions. False Positives explained.
