SQLAlchemy Essentials: A Beginner’s Roadmap
Key Takeaways SQLAlchemy is both an ORM and a SQL toolkit — pick one, use both, whatever works for your situation. Learn Engine, Session, and Declarat…
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Perl 🐪 Weekly #777 - Check your CPAN profile!
Originally published at Perl Weekly 777 Hi there! In the recent weeks I looked at a lot of MetaCPAN profiles (aka. author pages) such as that of MANWA…
There Is No Perfect Solution in Software Development: Every Decision is a Tradeoff
Most bad decisions in software engineering aren't made because the engineer chose wrong between two clear options. They're made because the engineer d…
Nix Series: Security Hardening
Pada series ini kita akan melakukan dasar konfigurasi security di NixOS. Konfigurasi yang dilakukan cukup standar, seperti: ssh, firewall, dan fail2ba…
How I built a live demo that breaks agent pipelines in 8 different ways - and why every team building on MCP needs one
TL;DR — The Gauntlet is an open-source Next.js app that connects 7 MCP servers through a LangChain multi-agent pipeline, then lets you toggle 8 failur…
Introducing SignalOps API: Content Moderation, Email Verification, and IP Intelligence APIs
Introducing SignalOps API Developer APIs for moderation, email, verification, and IP intelligence. https://signalopsapi.com SignalOps API and other de…
Memory Leaks in Python and How to Overcome Them
Python is known for being simple, readable, and developer-friendly. One of its biggest advantages is automatic memory management, which means develope…
While My Friends Were Playing Games, I Was Pressing BREAK
How a curious kid with a ZX Spectrum became an engineer who builds AI from scratch When I was a kid in the early '90s, every boy in my class dreamed a…
Why Ethernet Is Named After a Physics Myth
Plug a sensor into a switch, wire up a building full of cameras, or rack a server, and you are using Ethernet. It is the most widely deployed wired ne…
The spec is in the wrong place
My day job is at a large tech company. Hundreds of engineering teams, and every one of them is somewhere different on AI adoption. Some are still trea…
Indexing: The Force Awakens in My Rate Limiter Quest
The Quest Begins (The "Why") Ever had one of those days where your API feels like it’s stuck in quicksand? I was building a simple rate‑limiter for a …
Starting My LFX Mentorship Journey: Building Contributor Identity Verification for Hiero
Today, June 15th, 2026, I officially start my 6-month LFX mentorship under the Linux Foundation Decentralized Trust (LFDT) program. I will be working …
I stopped telling ChatGPT to 'fix it.' Here's the 4-part prompt I use instead.
For about a year I used AI to code like a slot machine. Paste a wall of code. Type "fix it" or "make this better." Pull the lever. Sometimes I won. Us…
قمر — Complete Guide
قمر (Qamar): راهنمای جامع و فنی در دنیای پرهیاهوی توسعه نرمافزار، گاهی اوقات به ابزارهایی نیاز داریم که به جای پیچیدگیهای بیمورد، مستقیماً روی حل ی…
Sliding Window: The Force Awakens – Detect the Pattern and Never Get Stuck Again
The Quest Begins (The “Why”) I still remember the first time I faced a “minimum size subarray sum” question in an interview. The problem stared back a…
Python's collections Module: Beyond defaultdict and Counter — 4 Hidden Gems That Solve Real Problems
Python's collections Module: Beyond defaultdict and Counter — 4 Hidden Gems That Solve Real Problems Every Python developer knows defaultdict and Coun…
I Got Fired After Giving Feedback About a System That Was Already in Production
The system was in production. It worked. And it was built without version control, using Perl scripts, ad-hoc PHP files, PostgreSQL stored procedures,…
Three PostgreSQL Master/Replica Discovery Problems — and How to Solve Them
When an application starts using multiple PostgreSQL hosts, the headaches begin: you need to dynamically find the master after a failover, pick a repl…
5 English Phrases Every Developer Needs for Code Reviews
5 English Phrases Every Developer Needs for Code Reviews Code reviews are one of the most communication-heavy parts of a developer's day. You're not j…
APK Install and App Manager in Rust + Tauri — Building ADB Tools
All tests run on an 8-year-old MacBook Air. All results from shipping 7 Mac apps as a solo developer. No sponsored opinion. HiyokoKit includes APK ins…
🚀 BFS: The Jedi Mind Trick for Graph Traversal (Why It’s More Than Just a Queue)
The Quest Begins (The “Why”) I still remember the first time I stared at a whiteboard interview question that asked for the shortest number of moves a…
Email Testing Guide for Developers (2026 Edition)
Email is the test surface nobody wants to own. It's asynchronous, depends on external providers, has its own version of "flaky" (sometimes a delivery …
Rebuilding Instagram in 2026
Building an Instagram Clone in 2026 with Django and django-pictures A story about a billion-dollar exit, a chance meeting at a business plan competiti…
How to Test AI Agents Before Production
Most AI agents are not failing because the model is useless. They fail because nobody defined what “working” means. A chatbot can answer a question an…
# Why Do We Use PasswordEncoder in Spring Security?
When I first started learning Spring Security, I had a simple question: "If Spring Security can authenticate users using usernames and passwords, why …
Stage 2.1 — Core Security Concepts
From Zero to Cybersecurity Professional | Complete Roadmap Series Series: Cybersecurity × OT/ICS Security — Full Roadmap Stage: 2 — Cybersecurity Core…
The Jedi Mind Trick: How One Resume Line Turned My Job Hunt Into a Victory Lap
The Quest Begins (The "Why") Honestly, I felt like I was stuck in the opening scene of The Matrix —surrounded by green code that made zero sense, exce…
Cx Dev Log — 2026-06-13
No commits landed today. No compiler work, no new features, no bug fixes. The only activity in the last 24 hours was automated: a site blog deploy and…
How to Run a Technical Debt Audit (Guide for Non-Engineer Founders)
Originally published at spectredev.xyz . Cross-posted here for the Dev.to community. Learn how to run a technical debt audit as a non-technical founde…
Building a Floating AI Assistant That Lives in the Corner of Your Screen
If this is useful, a ❤️ helps others find it. All tests run on an 8-year-old MacBook Air. HiyokoHelper is a 360×440px floating window. Always accessib…