DEV Community: Djamware Tutorial

Using CQRS and Event Sourcing in NestJS

Djamware Tutorial — Fri, 19 Jun 2026 12:32:12 +0000

Traditional CRUD applications can become difficult to scale and audit as complexity grows. In this tutorial, we explore how to implement CQRS (Command Query Responsibility Segregation) and Event Sourcing using NestJS and the official @nestjs/cqrs package.

You'll learn how to build:

Commands and Command Handlers
Queries and Query Handlers
Domain Events and Event Handlers
Aggregates and Read Models
Event-driven workflows with Sagas
Production-ready Event Sourcing architectures

Perfect for developers building scalable backends, microservices, and audit-heavy applications.

🔗 Read the full article:

Using CQRS and Event Sourcing in NestJS: Build Scalable Event-Driven Applications

New Tutorial: Flutter Camera & Image Picker: Complete Photo/Video App

Djamware Tutorial — Sun, 14 Jun 2026 12:54:01 +0000

earn how to build a fully functional Flutter media application that supports:

Camera preview
Photo capture
Video recording
Gallery image selection
Gallery video selection
Media previews
Android and iOS permissions

This tutorial uses the latest Flutter ecosystem and demonstrates practical implementation with the camera and image_picker packages. It is a great foundation for social apps, messaging apps, profile uploads, and content creation tools.

🔗 Read the full guide:

Flutter Camera & Image Picker: Complete Photo/Video App

Learning Django QuerySet internals – Understand lazy evaluation and caching

Djamware Tutorial — Mon, 01 Jun 2026 12:41:30 +0000

Django QuerySets are more than just database queries. In this tutorial, we explore the internals of QuerySets, including lazy evaluation, caching mechanisms, query execution triggers, and performance optimization techniques that help you build efficient Django applications.

Create a Beautiful Pricing Table with Tailwind CSS

Djamware Tutorial — Sun, 31 May 2026 11:58:54 +0000

Modern SaaS websites often rely on clean pricing sections to help users compare plans and make decisions quickly.

In this tutorial, you'll learn how to build a beautiful and responsive pricing table using Tailwind CSS with:

Responsive pricing cards
Featured plan highlighting
Hover animations
Modern UI styling
Mobile-friendly layouts

You'll also learn the updated Tailwind CSS v4 setup process, including the new CLI workflow and CSS-first configuration approach.

Read the full tutorial:

👉 Create a Beautiful Pricing Table with Tailwind CSS

tailwindcss #webdev #frontend #css #html #javascript #programming #tutorial

Master Async Programming in Python (2026)

Djamware Tutorial — Tue, 05 May 2026 11:59:11 +0000

Learn asyncio + aiohttp with real-world examples:

Concurrent tasks
Async HTTP requests
API aggregation
Performance tips

HTML5 Deep Dive: Modern APIs, Semantic Markup & Best Practices (2026)

Djamware Tutorial — Mon, 04 May 2026 12:37:08 +0000

HTML5 isn’t just about markup anymore—it’s a powerful platform for building modern web applications without relying heavily on external libraries.

In this tutorial, we explore:

Semantic HTML for better structure, SEO, and accessibility
Built-in APIs like Geolocation, Web Storage, Drag & Drop, and Canvas
Native form validation and input types
Performance best practices (lazy loading, defer, DOM optimization)
A real-world mini dashboard example

Whether you're a beginner or an experienced developer, this guide will help you write cleaner, faster, and more maintainable HTML.

👉 Read the full tutorial:
https://www.djamware.com/post/html5-deep-dive-modern-apis-semantic-markup-best-practices-2026

Real-Time AI Text Summarization in Go with Streaming GPT Responses

Djamware Tutorial — Fri, 01 May 2026 12:44:21 +0000

If you're building AI apps, streaming is no longer optional.

Users expect:

Instant feedback
Progressive results
ChatGPT-like experience

In this tutorial, you’ll learn how to:

Build a Go API using Gin
Stream AI responses with Server-Sent Events (SSE)
Integrate GPT for real-time summarization
Create a simple frontend that renders output live

💡 Why streaming matters:
It improves perceived performance by sending tokens as they are generated instead of waiting for the full response

👉 Full tutorial:
https://www.djamware.com/post/real-time-ai-text-summarization-in-go-with-streaming-gpt-responses

Secure JavaScript: OWASP + Common Vulnerabilities

Djamware Tutorial — Mon, 27 Apr 2026 11:44:06 +0000

Security should be part of development from day one—not an afterthought.

I’ve just published a complete guide covering how JavaScript developers can avoid common vulnerabilities and build safer applications using OWASP recommendations.

Topics include:

XSS prevention
CSRF protection
JWT security
Secure password hashing
npm dependency auditing
Content Security Policy
Security headers
Input validation
Rate limiting
Environment variable protection

Perfect for frontend and backend developers working with Node.js, React, Vue, Angular, and Express.

Read the full article here:
https://www.djamware.com/post/secure-javascript-owasp-common-vulnerabilities

Happy coding and stay secure 🚀

Building Your First Neural Network in Rust with Burn

Djamware Tutorial — Thu, 23 Apr 2026 11:39:01 +0000

Most machine learning tutorials start with Python. This one starts with Rust.

In this guide, we explore how to use Burn to build a simple neural network from scratch for binary classification.

You’ll learn:

Why Burn is a great choice for Rust-native deep learning
How to define model layers with LinearConfig
Why init(device) matters in newer Burn versions
How forward propagation works with ReLU activation
How to prepare for full training with optimizers like Adam and SGD

If you're exploring production-ready ML systems in Rust, this is a great place to begin.

Read the full tutorial:
https://www.djamware.com/post/building-your-first-neural-network-in-rust-with-burn

Set Up ESLint and Prettier in a Vue 3 Project for Clean Code

Djamware Tutorial — Tue, 21 Apr 2026 11:57:40 +0000

This tutorial covers how to use ESLint and Prettier together in a Vue 3 + Vite project to keep your code clean, readable, and team-friendly.

Topics covered:

Vue 3 project setup
ESLint flat config
Prettier integration
VS Code auto-format on save
Team best practices for consistent code standards

If you want a more professional Vue workflow, this setup is essential.

Read the full guide:
https://www.djamware.com/post/set-up-eslint-and-prettier-in-a-vue-3-project-for-clean-code

Building Reactive Microservices with Quarkus + Mutiny

Djamware Tutorial — Thu, 16 Apr 2026 11:48:08 +0000

In this guide, we build a reactive product microservice using Quarkus and Mutiny with:

Uni for async single results
Multi for streams
RESTEasy Reactive
SSE streaming
non-blocking API design

A practical tutorial for Java backend developers who want to build modern cloud-native services.

Read the full article:
https://www.djamware.com/post/building-reactive-microservices-with-quarkus-mutiny

React Responsive Design with CSS Grid and Media Queries

Djamware Tutorial — Mon, 13 Apr 2026 11:36:37 +0000

Learn how to build mobile-first responsive layouts in React using:

CSS Grid
media queries
adaptive sidebars
responsive cards
auto-fit + minmax()
fluid typography with clamp()

A practical tutorial for building modern dashboards and admin UIs.

Read the full guide:
https://www.djamware.com/post/react-responsive-design-with-css-grid-and-media-queries-build-mobile-first-layouts