✍️ Personal notes by Rajesh Singh

Thoughts worth keeping!

Practical notes on DevOps, AI & ML, architecture, data systems, and lessons learned from real engineering work.

✨ Latest Post

AI & ML

The 99.4% Accurate Model That Caught Zero Fraud

A fraud detection story about why accuracy is the most overrated metric in ML, told through one embarrassingly lazy model.

/ 6 min read

AI & ML

Iris Species Classification: The Machine Learning Workflow

End-to-end Iris species classification using Python and scikit-learn, covering data validation, EDA, model comparison, evaluation, interpretation & prediction.

AI & ML

Llama 3.1 vs 3.2 - Which Model is Right for You?

Compare Llama 3.1 vs 3.2 across multimodal capabilities, model sizes, and practical use cases to choose the right model.

DevOps

Terraform Safety - Keep Resources Safe from Accidental Deletion

Learn how to protect Terraform resources from accidental deletion using lifecycle.prevent_destroy and enable_deletion_protection. A must-read guide for DevOps engineers who value safe and stable infrastructure.