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Muhammad Safiullah Khan (@safi-io) | Hashnode

@safi-io

Muhammad Safiullah Khan

@safi-io

Website

Software Engineer ~ Python | Fantech Labs | Devsinc | CS’27 @ COMSATS

Sahiwal, PakistanJoined April 2025

About

Software Engineer by choice.

Available for

I am available for software engineering roles.

Muhammad Safiullah Khan's blogs

SafiCodesAndWritessafi-io.hashnode.dev7 posts

About

Software Engineer by choice.

Available for

I am available for software engineering roles.

Muhammad Safiullah Khan's blogs

SafiCodesAndWritessafi-io.hashnode.dev7 posts

Recently published

safi-io.hashnode.dev

How Docker Breaks UFW and Alters iptables

Let me set the context for this article: I was deploying some applications on my VPS, and while I had configured UFW (Uncomplicated Firewall), the ports published by Docker were still exposed directly to the internet. In this article, we’ll explore t...

Jan 15·4 min read

safi-io.hashnode.dev

Object Calisthenics Concepts

Object Calisthenics is a set of 9 coding rules meant to improve object-oriented design, code readability, and maintainability. It’s not a framework or a library.Think of it as discipline for writing clean OOP code, similar to how physical calisthenic...

Jan 9·4 min read

safi-io.hashnode.dev

Building a University Timetable System Using FastAPI, PostgreSQL, React, and Flutter

Introduction When I joined university in September 2023, I encountered a problem every student knew too well:Every day, almost 4–5 times, students had to open a PDF file just to check: Where is the next lecture? Which teacher will take it? In whic...

Nov 22, 2025·4 min read

safi-io.hashnode.dev

Understanding Celery with Redis

When building modern applications, one recurring challenge is handling long-running or CPU-intensive tasks without blocking the main application thread. Whether it’s generating reports, encoding images, or sending bulk emails, you don’t want to keep ...

Sep 13, 2025·5 min read

safi-io.hashnode.dev

Redis: The Secret Sauce Behind Lightning-Fast Apps

When building an application, speed matters; your users don’t care if your backend is struggling with database queries, they just want instant responses.That’s where Redis shines. In this article, we’ll cover: What Redis is, and how it works under t...

Aug 12, 2025·7 min read