📰 Dev.to · Long Nguyen
Articles from Dev.to · Long Nguyen · 21 articles · Updated every 3 hours · View all reads
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Dev.to · Long Nguyen
6d ago
I Built an EAN-13 Barcode Checker (With Checksum Validation)
While working with product data, I needed a way to validate EAN-13 barcodes. So I created this...

Dev.to · Long Nguyen
6d ago
A Simple Markdown Viewer I Use for Writing Docs Faster
If you work with Markdown a lot (README, docs, blogs), you probably need a fast preview tool. So I...

Dev.to · Long Nguyen
1w ago
Why Identity is the New Perimeter: A Quick Guide to IAM Basics
Master identity and access management basics to secure your digital infrastructure. Learn about SSO, RBAC, and best practices for managing digital identities ef

Dev.to · Long Nguyen
1w ago
Cybersecurity in 2026: The Essential Primer for Tech Pros & Beginners
Master digital protection with this comprehensive cybersecurity tutorial 2026. Learn cyber hygiene, information security fundamentals, and how to stay safe onli

Dev.to · Long Nguyen
1w ago
Why Clarity Beats Cleverness: A Guide to Clean Code Principles
Master essential clean code principles to improve software maintainability. Learn naming conventions, SOLID, DRY, and KISS techniques to write readable code.

Dev.to · Long Nguyen
1w ago
Microservices vs Monolith: Choosing the Right Architecture for Your Next Build
Compare microservices vs monolith architectures. Learn about scalability, system migration strategies, and how to choose the best architectural pattern for your

Dev.to · Long Nguyen
1w ago
Cracking the Senior Python Interview: Internals & Memory Management
Master your next technical assessment with these advanced Python interview questions for senior developers. Explore memory management, metaclasses, GIL, and opt

Dev.to · Long Nguyen
1w ago
Serverless & SEO: How Cloud Engineers Can Optimize for Web Crawlers
Master SEO for serverless architectures with our technical guide. Learn to optimize cold starts, edge computing, and dynamic rendering for cloud-native performa

Dev.to · Long Nguyen
1w ago
Mastering JavaScript Data Types in 2026: Primitives vs. Reference Types
Master JS data types 2026 with this expert guide. Learn about primitive vs reference types, BigInt, Symbols, memory management (Stack vs Heap), and type coercio

Dev.to · Long Nguyen
1w ago
50 Python Interview Questions to Ace Your Technical Review in 2026 🐍
Master the top 50 Python interview questions 2026. This comprehensive guide covers beginner basics, OOP, advanced CPython concepts, and coding challenges for yo

Dev.to · Long Nguyen
1w ago
IPv6 Basics: A Practical Starter — Addresses, /64 Subnets & Transition Paths
Learn IPv6 basics with clear examples of address notation, hextets, prefixes, /64 subnetting, SLAAC vs DHCPv6, NDP, and practical transition options like dual s

Dev.to · Long Nguyen
1w ago
Mastering HTML Forms: Essential Elements for Better User Inputs
Learn how to build high-converting, accessible HTML forms. This guide covers HTML5 input types, validation best practices, CSS styling, and secure form submissi

Dev.to · Long Nguyen
1w ago
How to Optimize Your Tech Blog for AI Search Engines (GEO & LLMs)
Master AI search optimization to rank in generative results. Learn strategies for GEO SEO, LLM content optimization, and conversational search to boost visibili

Dev.to · Long Nguyen
1w ago
Mastering Image Processing in Python: A Quick Pillow Guide
Master image manipulation with our comprehensive python pillow tutorial. Learn installation, resizing, filtering, and batch processing using the modern PIL fork

Dev.to · Long Nguyen
1w ago
Why You Should Switch to Structured Logging in Python (And Ditch Regex)
Master structured logging in Python to improve observability. Learn how to implement JSON logging, use Structlog vs the standard library, and optimize for ELK s

Dev.to · Long Nguyen
1w ago
🚀 What's Coming in ES2026? A Sneak Peek at the New JavaScript Features
Explore the most impactful ES2026 features including the Temporal API, pipeline operator, and pattern matching. Learn how next-gen JavaScript updates improve co

Dev.to · Long Nguyen
1w ago
Stop Guessing: Master Browser DevTools for HTML & CSS Debugging
Master browser DevTools with this comprehensive guide. Learn how to inspect elements, edit CSS in real-time, and troubleshoot HTML structures to improve your fr

Dev.to · Long Nguyen
1w ago
How Routers Work — Routing Tables, Next Hop & Longest Prefix Match (Beginner Primer)
Learn how routers work with a clear, beginner-friendly guide to routing tables (RIB), the forwarding table (FIB), next hop resolution, longest prefix match, and

Dev.to · Long Nguyen
1w ago
Mastering CSS Variables: A Quick Guide for Modern Devs
Learn how to master CSS variables (custom properties) for scalable web design. Discover the var() function, root selectors, and dynamic theming techniques.

Dev.to · Long Nguyen
1w ago
Modem vs Router vs Switch vs Access Point — Quick Home Networking Guide
Learn the key differences between a modem, router, switch, and access point—plus WAN vs LAN, NAT, DHCP, and Wi‑Fi roles. See example home/SMB topologies and how

Dev.to · Long Nguyen
1w ago
What is a Firewall? Practical Beginner’s Guide to Rules, Types, and Best Practices
Learn what is a firewall, how it works with packets, ports, and protocols, and how firewall rules (ACLs, state table, ingress/egress) enforce security policy. C
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