Hello. My name is A.R. ZERIN. I am an Entrepreneur, Technology Optimist and a Software Engineer from Dhaka, Bangladesh .
Programming is my passion. Life is beautiful, so I am trying hard to enjoy it.
I have completed my Undergraduate Degree in Computer Science & Engineering at 2004 and working in the era of IT for last 14+ years dedicatedly.
I am a believer of, “He who aims at the sky, shoot higher much than he who aims at a tree“.

AWS AWS Cloud Machine Learning
When its Amazon & When its AWS
November 20, 2025
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If you’re preparing for AWS certifications or working with cloud services, you’ve probably noticed that some services start with Amazon while others start with AWS. Here’s the simple rule: ✅ Services that start with “Amazon” These are higher-level, customer-facing or application-level cloud services. Examples: Amazon EC2 Amazon S3 Amazon RDS Amazon DynamoDB Amazon CloudFront Amazon […]
AWS Machine Learning
Machine Learning Best Practices on AWS
November 20, 2025
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When developing machine learning models in the cloud, optimizing costs is a crucial aspect to consider throughout the entire ML lifecycle. The following are some best practices to follow in each phase: Phase -1: Data preparation phase Best practices for the data preparation phase include: Using cost-effective storage options like Amazon S3 for storing raw […]
TensorFlow
TesnsorFlow – Self Learning Course
October 3, 2025
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TensorFlow Course – Building and Evaluating Medical AI Models Source Code: https://colab.research.google.com/drive/1klBxr93NYXrLFOVMXhm0RbVm5PIjfXQn
NestJS
NestJS – Self Learning
October 3, 2025
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NestJs Course for Beginners – Create a REST API Source Code: https://github.com/vladwulf/nestjs-api-tutorial Thanks to: FreeCodeCamp.org
AWS
AWS Well-Architected Framework — 6 Pillars
August 14, 2025
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Pillar Focus Key Goals 1. Operational Excellence Run and monitor systems, and continuously improve processes and procedures. Enable effective operations, learn from failures, automate changes, and evolve procedures. 2. Security Protect data, systems, and assets while delivering business value. Implement strong identity management, enable traceability, protect data in transit/at rest, and prepare for incidents. 3. […]
AWS
AWS Leadership Principles
August 14, 2025
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Customer Obsession Ownership Invent and Simplify Are Right, A Lot Learn and Be Curious Hire and Develop the Best Insist on the Highest Standards Think Big Bias for Action Frugality Earn Trust Dive Deep Have Backbone; Disagree and Commit Deliver Results Strive to be Earth’s Best Employer Success and Scale Bring Broad Responsibility     […]
CodeIgniter Framework Coding
CodeIgniter 4: How to Soft Delete, Restore, and Permanently Remove Records
July 28, 2025
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🔄 Understanding Soft Deletes in CodeIgniter 4 Models (With Examples) In modern applications, it’s often safer to hide data rather than delete it permanently. This is where Soft Deletes come into play. CodeIgniter 4 makes this easy by integrating soft delete functionality directly into its Model layer. In this post, we’ll explore how to enable […]
MySQL
How to get MySQL Table Storage Sizes
July 9, 2025
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Getting MySQL Database Storage Sizes If you’re managing a MySQL database, it’s essential to monitor how much disk space your tables and databases are consuming. Whether you’re troubleshooting performance issues or planning storage upgrades, knowing the exact size of your tables can be incredibly helpful. 📊 View Table Sizes in MySQL To get the size […]
Saving Time in Tech
🚀 Boost Your Dev Workflow with ZSH Aliases on macOS
June 20, 2025
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💻 Supercharge Your Mac Terminal with Custom Command Shortcuts Using .zsh If you’re a developer working on macOS, you likely repeat certain terminal commands every day. Whether it’s Laravel’s php artisan, Git commands, or anything else, typing the same long commands again and again can slow you down. But what if you could shorten php […]
apache npm
How to Instantly Preview Static Websites Locally Using npx serve
June 12, 2025
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🚀 How to Preview Static Websites Locally Using npx serve When building static websites with tools like Tailwind CSS, React, Vue, or even plain HTML/CSS, it’s often helpful to preview your site locally before deploying. That’s where npx serve comes in — a simple, zero-config command to serve your static files instantly! 🔧 What is […]
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