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A hands-on guide to Git and GitHub — from zero to professional workflow. Core concepts, everyday commands, collaboration workflows.

Deploy free websites with GitHub Pages and automate tasks with GitHub Actions. YAML workflows, CI/CD, beginner recipes.

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Lists, creates, attaches to, and kills the long-running Claude Code sessions I leave open in tmux. No daemon, no network, tmux as the source of truth.

I was watching my server's swap creep past ninety percent and I couldn't tell which of the seven Claude Code sessions in tmux was the cause. gave me names — , ,…

A production-ready single-binary PDF rendering service powering multiple projects. Built as a more reliable replacement for v1, which struggled with hangs under sustained load.

DocPipe converts HTML to PDF over a simple authenticated HTTP API. It runs as one container, serves the CASCK job portal in production, and ships its own public…

A platform-engineering case study of UIU EduQueue — the self-hosted student platform that started as a 200-line script and grew into a production system with multi-provider email failover, an Asynq-driven PDF pipeline, OTP-protected admin tooling, append-only event analytics, and a Discord-integrated observability stack. Built on Go 1.24, Remix on Cloudflare Workers, PostgreSQL, Redis, and Cloudflare R2.

Live at eduqueue.monzim.com. One Go API, one Remix frontend on Cloudflare Workers, one Asynq worker pool, three email providers, one operator (me). I build plat…

A production-ready, self-hosted solution for managing PostgreSQL database backups. Automate your database backups with cloud storage integration (AWS S3, Cloudflare R2, MinIO), Discord notifications, cron-based scheduling, and a modern React dashboard. Deploy in minutes with Docker.

DumpStation is a comprehensive, self-hosted PostgreSQL backup management system that I built to solve a problem every developer eventually faces: reliable, auto…

A supportive personal tracking app for monitoring and reducing cigarette and vape consumption with analytics, goal setting, and AI-powered coaching.

A supportive personal tracking application for monitoring and reducing cigarette and vape consumption—built with awareness, not judgment. --- The Vision Breathe…

Real-time earthquake monitoring for Bangladesh with USGS data, AI-powered analysis, and multi-channel alerts.

When Bangladesh got hit with several earthquakes in a short time, my feed was full of random posts—none of them matched the real data. I wanted something accura…

A privacy-first social media platform that blends friendships with playful rivalries. Features crush matching, aura-based rankings, anonymous messages, and a dual-bucket media architecture that enforces privacy at the infrastructure level.

What happens when you blend the excitement of friendships with the intrigue of rivalries? You get Friniemy—a fresh, engaging social media platform designed to f…

A dual-purpose financial intelligence platform designed for both individuals and businesses. Spendo AI delivers institutional-grade insights through a unified AI engine, helping users manage budgets, track expenses, and optimize investments—all from one place.

Spendo AI is a revolutionary financial intelligence platform that merges personal and business finance management into a single, AI-powered experience. Designed…

FileCon is a simple and efficient CLI tool that allows users to concatenate specific file types from a directory into a single output file. It's useful for scenarios like AI-related tasks where multiple files need to be merged.

FileCon is a command-line tool designed to simplify file concatenation tasks. Whether you're working on projects that involve managing multiple files or prepari…

OpenChat is a real-time, self-hosted chat server that allows users to create scalable, anonymous chat rooms with robust spam prevention. It supports both public and local networks, ensuring privacy and high performance, even during internet outages.

OpenChat Status: in progress — this writeup is still being put together. The system itself is live; the post will follow. Visit: https://openchat.monzim.com ---…

UCAM Protector is a privacy-focused Chrome extension that allows you to blur sensitive information and enable dark mode while using the UCAM platform (ucam.uiu.ac.bd). Stay protected in public spaces with ease.

Latest Version: 0.0.2 Release on 2024-09-17 Stay up-to-date with the latest features and improvements by downloading the newest version of UCAM Protector. - Dow…

Mini-ETL, a powerful and scalable system designed to automatically sync data from third-party solutions to your PostgreSQL database and S3 storage. Set it up once, and let it handle the rest! This project is inspired by the YC-backed startup Fiber.dev.

Live Demo & Source Code Live Demo: https://mini-etl.vercel.app Source Code: https://github.com/monzim/mini-etl Supported Integrations - GitHub: Sync public repo…

Go Plugin designed to automate the process of scraping notices from various departments of my university website with the help of Colly

Introducing uiuscraper Uiuscraper is a specialized Go package designed to automate the process of fetching notices from United International University departme…

I've created a new Dart package called 'dated' to make working with dates and times simpler. It provides handy tools for comparing dates, formatting 'time ago' strings, and customizing those strings to fit your project. Check it out on pub.dev and let me know what you think!

Hey everyone, I'm excited to share a new personal project I've been working on: a Dart package called "dated." If you've ever found yourself wrestling with Date…

Ke-Pathalo: An open-source Next.js app for anonymous messages. Live-coded, using PostgreSQL, Prisma, TailwindCSS, hosted on Vercel. Join and express freely!

In a world dominated by digital communication, expressing oneself without fear of judgment is a desire many share. To cater to this need, I present to you Ke-Pa…

Unizim is a cross-platform, scalable app designed to transform the university and college experience. With a wide range of features such as event management, real-time chat, counseling appointments, and discussions, Unizim offers seamless collaboration and customization for students and faculty.

Unizim is a cross-platform scalable app developed with the specific needs of university and college students and faculty members in mind. It aims to address the…

Songkhep, a cutting-edge link shortener project that redefines simplicity and efficiency. This serverless application is meticulously crafted with Cloudflare Workers, Azure Cosmos DB, Azure Functions, and Redis to deliver a seamless and scalable link shortening experience.

Background: In the quest for a straightforward link shortening solution tailored to personal needs, I encountered the frustration of encountering extraneous ads…

The UIU Bot is a Discord bot that provides academic assistance to students at United International University. It is designed to help students stay organized, collaborate with peers, and never miss a deadline.

Details: https://monzim.com/uiubot The all-in-one assistant for your academic journey. Stay organized, collaborate with peers, and never miss a deadline. Featur…

Discover the 'Bangladesh' Flutter plugin - a powerful tool for displaying a detailed map of Bangladesh in your Flutter apps, with division borders and interactive features.

The 'Bangladesh' Flutter plugin, a versatile tool that seamlessly integrates into your Flutter applications to render a detailed map of Bangladesh. Highlighting…

A Flutter app that provides easy access to authentic Bangladeshi and international news sites. With comprehensive news coverage, user interaction-based ranking, cross-platform compatibility, Material 3 design, and a custom Bangladesh map Flutter plugin, the app offers an immersive and personalized news reading experience. Stay informed with 'খবর' and explore the world of news at your fingertips.

Welcome to the project blog for "খবর All Bangla Newspaper" - a mobile app built with Flutter that aims to provide users with easy access to all authentic Bangla…

'Salami' is a Flutter-based Android and web application that allows users to auto-generate beautiful cards with ease. The app utilizes Firebase for Analytics, Hosting, Push Notification, and Authentication, and GitHub Action for auto-deployment. With over 200 downloads and 1,000+ website visitors during the festival season, 'Salami' is an app that is gaining traction.

Salami is an Android and web application designed to help users auto-generate beautiful cards effortlessly. The application was developed using Flutter and was …

Why random UUIDs wreck your database index, how a ULID's 48-bit timestamp + 80-bit randomness fixes it, and when to pick ULID over UUIDv4 and UUIDv7.

The problem with random IDs The first time a database index quietly betrayed me, the symptom was boring: a table that inserted at a few thousand rows a second w…

Why the per-colo rate-limit binding leaked my API limits, and how one single-threaded Durable Object per key running a sliding window counter fixed it.

Architecture at a glance There is a specific flavour of dread that arrives when you put a public API on the internet and then read your logs. My portfolio is a …

A deep dive into the privacy-first view counter behind my portfolio: a Cloudflare Workers KV hot path, a D1 read model, two cron jobs, and a salted hash that forgets you at midnight.

TL;DR — My portfolio counts views with a Cloudflare Worker that writes to KV on the hot path, mirrors into D1 every 15 minutes, and snapshots a daily time-serie…

A sanitised postmortem for the DocPipe v1 service hang — root cause, timeline, fix, and the soak test that prevents the failure mode from coming back. Google SRE Chapter 15 format.

Status: Resolved · DocPipe v2 (2026-05) supersedes v1. Severity: Sev-2 — service unavailable until manual container restart. Format: Blameless postmortem, model…

My HTML-to-PDF service hung under load. The fix was three problems compounding — a zombie reaper, a chromedp lifetime gotcha, and a synchronously-fired event I was waiting for asynchronously.

I run a small service called DocPipe. It does one thing: take HTML, return a PDF. The CASCK job portal uses it to generate admit cards — a couple of thousand pe…

Every Claude Code session starts blank. No memory, no continuity. Yet somehow it knows your stack, your conventions, your quirks. Here's exactly how that works.

Every Claude Code session starts with a completely blank context window. No background sync. No hidden database. No persistent state quietly accumulating in the…

A platform-engineering deep dive into UIU EduQueue's operator surface — passwordless OTP login backed by Redis-TTL sessions, the append-only EmailEvent schema, on-demand analytics rollups, the campaign builder's draft → scheduled → sending → sent state machine, and the live "pause everything" toggle that runs over Redis pub/sub.

Companion post to the UIU EduQueue platform overview. This is the long-form version of "how the operator console actually works" and "where the analytics number…

A platform-engineering deep dive into UIU EduQueue's async backbone — Asynq with a 10-permit global pool and a 2-permit ChromeDP semaphore, idempotent PDF generation, presigned R2 URLs, gocron-driven monitoring, and a Redis pub/sub settings service that live-reloads worker behavior without a redeploy.

Companion post to the UIU EduQueue platform overview. This is the long-form version of "how the worker pool actually works." The HTTP layer of EduQueue is small…

A platform-engineering deep dive into UIU EduQueue's email subsystem — the pluggable EmailProvider interface, per-provider sliding-window rate limiting in Redis, the AWS SES → Azure CS → custom Cloudflare Worker fallback chain, idempotent bounce-webhook handling, and the cache-defeating tracking pixel that survives Gmail's image proxy.

Companion post to the UIU EduQueue platform overview. This post is the long-form version of "how email actually works" inside EduQueue. If you only want the pla…

A platform engineer's comprehensive guide to migrating from GitHub Actions to self-hosted Woodpecker CI with Docker Compose. Covers setup, pipeline configuration, security best practices, scaling strategies, and an honest cost comparison.

As a platform engineer, CI/CD is the backbone of every team I support. For years, GitHub Actions served as the default — it's tightly integrated, nearly zero-co…

In building Friniemy, a modern social media platform, one of our biggest challenges was creating a media sharing system that truly respects user privacy while maintaining excellent performance. This is the story of how we architected a solution using a dual-bucket storage strategy.

The Privacy Problem with Cloud Storage When building a social media platform with multiple privacy levels (Public, Friends-Only, Private), we faced a critical d…

The InterPlanetary File System (IPFS) is a groundbreaking protocol that redefines how we store and share files on the internet. It shifts from traditional centralized systems to a decentralized, peer-to-peer model. In this blog, we'll explore IPFS in depth.

What is IPFS? IPFS, short for InterPlanetary File System, is a decentralized file storage and sharing system. Unlike the traditional web that relies on location…

In the world of global communication, real-time translation can be an indispensable feature. Whether you're building a chat app that connects users from different countries or an internal tool for multinational teams, a reliable and scalable architecture for instant translation is essential. In this post, I'll walk you through the architecture of a real-time translation chat application built using NestJS, Redis, and the Google Translate API.

This blog will focus on the architecture, components, and flow of the application, and by the end, you'll have a clear understanding of how real-time translatio…

Discover how OpenChat scales real-time communication using Go, Redis, and WebSockets. From spam prevention to horizontal scaling, explore the architecture that powers this self-hosted, anonymous chat server.

OpenChat is a real-time, self-hosted chat server that allows users to create anonymous, scalable chat rooms. It was born out of necessity during the July protes…

Discover how I leveraged AI (claude.ai) capabilities to build a real-time status update app in just 5 hours. Learn about the process, challenges, and insights into using AI for faster app development.

AI is evolving rapidly, becoming more powerful and accessible every day. As a developer, I've always been curious about how well AI can assist with app developm…

The new Dart package 'dated' simplifies working with dates and times. It offers easy comparisons, 'time ago' calculations, and customization options for your projects. Check out the documentation and contribute on GitHub!

Do you find yourself constantly juggling DateTime objects in your Dart projects? Wish there was a simpler way to compare dates, check if they're within the same…

This blog provides a solution for macOS users who encounter repetitive passphrase prompts when signing Git commits with GPG. By installing pinentry-mac via Homebrew and configuring GPG-agent to utilize it, users can seamlessly integrate passphrase management with the macOS keychain, streamlining the signing process.

When working with Git on macOS and signing commits using GPG, you might encounter the inconvenience of repeatedly being asked for your passphrase. This can be m…

My team DevSprint has earned a place in the Preliminary Round of the IUT National ICT Fest OpenApi Hackathon, emerging from a pool of over 55 teams. Among them, only 10 were chosen to advance. We're excited to announce our invitation to the final round, taking place on April 26th and 27th. In this blog post, I'll be unveiling our solution for the preliminary round.

Question-1 Your younger brother Tony Stark has given his SSC exam in February this year. The result is going to be published in May. Now, a lot of students alon…

Learn the essentials of JSON manipulation in Dart using the dart:convert library parse JSON strings with jsonDecode, generate JSON strings with jsonEncode, and handle lists seamlessly. Mastering these fundamentals empowers efficient communication with APIs and data storage in Dart applications.

JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write, and easy for machines to parse and generat…

Explore how Dapr streamlines the development of distributed applications through its sidecar architecture and rich set of building blocks. Learn how Dapr's platform-agnostic approach simplifies service orchestration across diverse cloud providers, empowering developers to focus on writing code while abstracting away the complexities of distributed systems.

Dapr, which stands for Distributed Application Runtime, is an open-source project designed to simplify the development of distributed applications by providing …

Learn how to set up AWS CodeCommit seamlessly with these step-by-step instructions, ensuring smooth integration and efficient collaboration for your development projects.

Before you begin configuring AWS CodeCommit, make sure you have the following: Prerequisites: - An AWS Account (https://aws.amazon.com/) - The AWS CLI installed…

Git and GitHub are powerful tools for version control and collaborative software development. This comprehensive guide will walk you through the basics of using Git and GitHub, explain how they work together, and provide essential tips to enhance your workflow.

Introduction to Git and GitHub Git is a distributed version control system that allows developers to track changes in their codebase and collaborate with others…

This blog provides a detailed guide on setting up a development environment for Flutter. From installing Git, GitHub CLI, OpenJDK, Flutter SDK, Visual Studio Code, and Android Studio, this comprehensive tutorial will help you set up all the necessary tools for Flutter development.

Welcome to our guide on setting up a development environment for Flutter! In this tutorial, we will walk you through the step-by-step process of installing and …

Unizim is an innovative app designed exclusively for UIU students, providing a seamless and efficient way to manage academic activities, collaborate with peers, and stay connected with the UIU community. In this step-by-step guide, we'll walk you through the process of using Unizim to make the most out of your educational journey. Let's get started!

How to Join the Beta Test? To be a part of the Unizim beta test, simply visit this link https://forms.gle/w9Ec3drbNw5nQy7n9 and complete the survey. Once you've…

Explore using Mason brick to structure Flutter projects—install Mason CLI, Flutter project, and A-project Mason bricks. Create a streamlined project with Riverpod, go_router, Google Fonts, and a custom theme. Dive into your next Flutter project effortlessly.

Introduction Building a well-organized Flutter app is crucial for efficient development and maintenance. This blog explores the utilization of Mason brick to st…

In this lesson, we are going to learn how we can add Firebase to our flutter application. And we are going the follow the official documentation.

Step 2: Create a Firebase Console Account Visit the Firebase Console and log in with your Google account. Optionally, create a new project with a unique name. S…

Flutter, a powerful and versatile framework for building cross-platform applications, requires a well-configured development environment to unleash its full potential. In this guide, we'll walk you through the step-by-step process of setting up your development environment for Flutter on both Windows and Linux machines.

Requirements Before diving into the installation process, ensure that your system meets the following prerequisites: - JDK version 11+ - Android Toolchain (for …

Built 500+ REST APIs for scalable microservices

Developed type-safe frontend for Edusoft platform

Created cross-platform mobile app with Flutter

Implemented backend services for enterprise apps

Automated deployment scripts for CI/CD pipelines

Scripted custom workflows for internal tools

Optimized low-level system utilities

Built dynamic web applications

Designed complex database queries for analytics

Managed Cassandra clusters for high-throughput data

Built high-performance Go APIs

Developed fast backend services

Developed interactive UIs for Edusoft dashboards

Built SEO-optimized web applications

Created scalable backend APIs

Designed modular backend services

Built lightweight REST APIs

Developed edge-compatible APIs

Created type-safe serverless APIs

Built cross-platform mobile apps for Edusoft

Developed AI-powered chatbots

Created AI workflow pipelines

Integrated LLM for content generation

Orchestrated multi-agent AI systems

Managed relational data for enterprise apps

Designed NoSQL solutions for serverless apps

Built document-based data stores

Implemented distributed SQL databases

Managed high-throughput NoSQL clusters

Optimized caching for real-time apps

Built message queues for async processing

Streamed large-scale event data

Built real-time mobile backends

Developed secure backend services

Created scalable open-source backends

Ship SSR apps & APIs on the edge (this very site runs on Workers)

Serverless SQLite as source-of-truth CMS for this portfolio

Zero-egress object storage for media & assets

Edge key-value store for low-latency config & caching

Stateful coordination & real-time at the edge

High-cardinality event analytics for site metrics

Edge-hosted static & full-stack frontends

CLI for deploying & managing Workers, D1, R2 bindings

Containerized microservices for scalability

Orchestrated containerized apps

Automated cloud infrastructure provisioning

Streamlined server configuration

Defined cloud infra as code

Built serverless functions

Developed serverless Azure apps

Deployed serverless applications

Managed multi-cloud serverless deployments

Architected cloud solutions

Built Azure-based infrastructure

Managed object storage

Optimized content delivery

Monitored cloud applications

Managed virtual servers

Automated system management

Built high-performance APIs

Developed scalable RESTful services

Automated deployment workflows

Self-hosted CI for internal infrastructure

Built data extraction pipelines

Automated workflows for data integration

Analytical queries over high-volume event data

Managed version control for teams

Administered Linux servers

Built MCP servers for tool/resource integration