DEV Community • 2026-07-25 14:35

Where does Secure by Design End? A 3D/4D Model

I’ve been thinking about a surprisingly intricate question: Where does Secure by Design actually end? The term now covers everything from threat modelling and architecture reviews to secure development, vulnerability scanning and assurance. All of these are important, but I think there is value in separating designing a system to be secure from demonstrating that the implementation ac...

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3m read
DEV Community • 2026-07-25 14:33

Refactoring My Learning Logs: Why I Rewrote Emotional Notes into Fact-Based Technical Reports

1. Introduction Hello from Japan! 🇯🇵 I am an active truck driver in Japan self-studying Python and Web technologies, leveraging my logistics domain knowledge to transition into a Web Engineer. (English is my second language, but I'm excited to share my journey with developers worldwide!) As of June 18 (Day 38 / 93 total study hours), I completed a full refactoring of my past three arti...

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2m read
DEV Community • 2026-07-25 14:32

Bare Metal and Neural Nets: Crafting a Purpose-Driven AI Cyberdeck

Your laptop is a rental. Your cloud is someone else's computer. It's time to build something that is actually yours. Everyone has seen one. A mechanical keyboard crammed into a Pelican case, a tiny screen running cmatrix for the 400th time, a cyberdeck that has never left a desk. It's beautiful. It's also useless. I love the aesthetic as much as the next Gibson-pilled gremlin, but we have to be ...

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10m read
I built a custom Linux command workbench with Electron to stop retyping CLI flags
DEV Community • 2026-07-25 14:31

I built a custom Linux command workbench with Electron to stop retyping CLI flags

If you spend a lot of time in Linux terminals running tools like nmap, systemctl, journalctl, or network diagnostics, you know the drill. You either end up digging through your bash history or re-reading man pages just to remember the exact syntax for a diagnostic scan you ran three days ago. Existing GUI wrappers are usually locked to a single tool. I wanted something flexible that could wrap ar...

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2m read
DEV Community • 2026-07-25 14:26

OpenSquilla routes each turn to the cheapest model that can handle it

The router is the product OpenSquilla puts a small machine learning model in front of your large ones. Before each turn, a local classifier called SquillaRouter reads the request and sends it to the cheapest model that can handle it. That single decision, repeated every turn, is what the project means by "same budget, more capability, better results." Most agent frameworks treat model ...

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3m read
DEV Community • 2026-07-25 14:20

Learning Go as a Ruby Developer # 2: Variables, Constants, and Why Go Doesn't Trust You

One of the first differences I noticed when learning Go was how seriously it takes types. Coming from Ruby. I rarely think about their types because Ruby figures everything out at runtime. Go has a very different philosophy. It wants to know exactly what every variable is, and if it doesn't know, it'll ask you to be explicit. Why This Felt Strange Coming from Ruby In Ruby, creati...

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4m read
DEV Community • 2026-07-25 14:17

I Replaced pytest-xdist With 60 Lines of subprocess.Popen. Here's Why.

Our test suite had a flake we couldn't pin down. A test would pass alone, pass in its own file, then fail when the full suite ran. Re-run it and it passed again. Classic state leak. The culprit turned out to be the thing we thought was protecting us: pytest-xdist. The Problem xdist spreads tests across persistent worker processes. Those workers stay alive and pick up file after file. ...

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5m read
DEV Community • 2026-07-25 14:15

PulseGuard: Real-Time Incident Observability with Java, OpenTelemetry & SigNoz

Introduction Modern applications don't fail all at once. They fail gradually. A payment gateway starts responding slowly. Database latency increases. Inventory checks take longer than expected. Customers begin to experience delays, but traditional monitoring often notices only after users have already been affected. This challenge inspired me to build PulseGuard, a Java-based observab...

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5m read
DEV Community • 2026-07-25 14:14

Could GPT-5.6 Sol Have a Dangerous Vulnerability?

Content note: This article discusses grief, emotional vulnerability, self-destructive behavior, and the potential risk of self-harm. Disclaimer: This article presents a behavioral hypothesis supported by preliminary empirical observations from a series of interactions and informal tests conducted with GPT-5.6 Sol. During these tests, I observed recurring conversational patterns and subtle behavi...

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12m read
DEV Community • 2026-07-25 14:14

What Really Happens When You Press Enter in the Linux Terminal? A Deep Dive Using the `ls` Command

Reading Time: 10 minutes You type ls, press Enter, and the result appears almost instantly. But what actually happens during those few milliseconds? This article follows the complete journey of a single Linux command---from your keyboard to the kernel and back to your screen. Table of Contents Introduction Meet the Players Step 1: Typing ls Step 2: Pressing Enter Step 3: T...

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4m read
DEV Community • 2026-07-25 14:13

Serving a local model from a Raspberry Pi: one process for browsers (SSE) and devices (MQTT)

You have a small box — a Raspberry Pi, a Jetson, a cheap ARM VM — running a local model. Two kinds of traffic want in: People (browser tabs, curl, httpx scripts) call an HTTP endpoint and want the answer streamed token by token, not after the last token. Devices (sensors, cameras, controllers) speak MQTT. They report telemetry and drop batch jobs. The conventional stack for that is three or ...

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5m read
DEV Community • 2026-07-25 14:13

I stopped replaying my entire codebase to Codex and Claude Code

I kept hitting the same problem in long Codex and Claude Code sessions: the agent was capable, but the project memory was expensive. A new task would trigger another repository scan. Decisions from older sessions had to be explained again. Tool results were buried in transcripts. A summary was smaller, but I could not always tell which source supported a statement or whether a newer decision had ...

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3m read
DEV Community • 2026-07-25 14:12

From ChatGPT to AI Agents: What Actually Changed Between 2022 and 2026

I recently gave this talk in English to my classmates at an English school in Baguio, the Philippines. Most of them had used ChatGPT. Almost none of them had used an AI agent. And the gap between those two experiences turned out to be much harder to explain than I expected. The problem is that if you don't understand how the pieces stack up, an AI agent looks like magic. And when a tool looks lik...

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11m read
DEV Community • 2026-07-25 14:11

Why My Open-Source Project Hasn't Done Better

Disclosure: I am the maintainer of Tura. I am posting this to ask for candid advice about open-source communication and evaluation, not as an independent review of my own project. Since the beginning of 2026, projects such as RTK, Caveman, and Ponytail have claimed that they can reduce token usage by 80–90%. Some gained tens of thousands of GitHub stars in a very short time. My previous startup ...

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3m read
DEV Community • 2026-07-25 14:10

Built a weather app with AI-generated summaries and city bookmarking—feedback welcome (took me 9-10 days; learned a lot)

Hey everyone, wanted to share a project I just finished. It's a weather app, but I tried to push past the typical "fetch API, show temperature" tutorial project. Features: AI-generated natural language weather summaries instead of raw numbers Dynamic backgrounds that change based on real weather conditions City search with live suggestions as you type Bookmark/favorite cities, persisted with loc...

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1m read
DEV Community • 2026-07-25 14:03

React Native List Performance — ScrollView, FlatList, SectionList, FlashList

Your feed scrolls fine with 20 items. Ship 2,000 and the UI starts hitching, memory climbs, and “just wrap it in a ScrollView” becomes the bug report. Lists are where most React Native apps feel slow. Not because RN is slow — because the wrong list API (or the right one, misconfigured) forces the JS thread and the UI thread to do work they shouldn’t. This is the practical guide: which component ...

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13m read
DEV Community • 2026-07-25 14:00

Building on Base: Sub-Cent Gas for Real-Time Blockchain Games

Introduction One of the biggest challenges in blockchain gaming is balancing decentralization with user experience. High gas fees and slow transaction times can kill the fluid, real-time interactions that players expect from traditional games. When I built yoss.gg, a zero-rake P2P USDC coin flip game, I quickly realized that to deliver a smooth gaming experience on-chain, I needed an af...

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4m read
DEV Community • 2026-07-25 13:52

The Coding Agent I Could Shape Around My Workflow

Claude Code is my daily driver at work. Its defaults are very good, and most things just work. But for a while, I had been hearing plenty of praise for how extensible Pi was. Pi is a small, extensible coding-agent harness that runs in the terminal. That caught my attention because I am a hardcore Neovim user. I have stayed with Neovim not because it arrives perfectly suited to me, but because ...

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8m read
DEV Community • 2026-07-25 13:51

Five Iceland Whale-Watching Harbours: A Quick OSM Data Audit

Whale-watching trips in Iceland often start from a harbour that is also part of a working town centre. The boat operator is usually easy to find. The less obvious part is what the map tells a visitor about the last 600 metres: toilets, parking, bus stops and visitor information. I pulled a small OpenStreetMap snapshot around five departure areas that travellers commonly use: Reykjavík Old Harbour...

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3m read
Hacker News: Front Page • 2026-07-25 13:48

The Silurian Hypothesis (2020)

Article URL: https://www.theparisreview.org/blog/2020/01/23/the-silurian-hypothesis/ Comments URL: https://news.ycombinator.com/item?id=49047563 Points: 4 # Comments: 1

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