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“.

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 […]
Tailwindcss
How to Install Tailwind CSS from Scratch with PostCSS and Autoprefixer
June 12, 2025
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🚀 How to Install Tailwind CSS from Scratch with PostCSS and Autoprefixer Tailwind CSS is a powerful utility-first CSS framework that helps you build modern websites with ease and flexibility. In this guide, we’ll walk through how to set up Tailwind CSS manually using npm, postcss-cli, and autoprefixer — with a simple build process and […]
Ethics Life Lifestyle
PAIN + REFLECTION = PROGRESS
January 16, 2025
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There is no avoiding pain if you are going after ambitious goal.
Principal
January 16, 2025
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Amazon’s Leadership Principles (LPs) are a core part of their culture and hiring process.   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 Deliver Results Detail Explanation: […]
MongoDB NoSQL
Step-by-Step Guide to Setting Up MongoDB on macOS
January 1, 2025
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Setting up MongoDB on macOS can be a straightforward process if you follow the right steps. Here’s how I did it on my macOS ARM 64 system using MongoDB Community Server version 8.04. Step 1: Download MongoDB I started by downloading MongoDB from the MongoDB Community Server. I selected the following options: Version: 8.04 Platform: […]
Machine Learning
Building a Next Word Prediction Model Using Deep Learning and Python
December 16, 2024
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Introduction to Next Word Prediction Next word prediction is a powerful language modeling task in machine learning. The goal of this task is to predict the most likely word (or sequence of words) that follows a given input context. It relies on statistical patterns and linguistic structures to generate predictions based on the provided context. […]
Data Science ETL Machine Learning
Building an ETL Pipeline with PySpark: A Step-by-Step Guide
December 16, 2024
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An ETL (Extract, Transform, and Load) pipeline is an essential data engineering process that extracts raw data from sources, transforms it into a clean, usable format, and loads it into a target storage system for analysis. For large-scale data processing, PySpark—with its distributed computing capabilities—is a robust choice. In this guide, we’ll walk through building […]
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