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Auditing an Existing Subnet Plan Before a Cloud Migration
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DEV Community · Technology

Auditing an Existing Subnet Plan Before a Cloud Migration

Most subnet articles start from a blank piece of paper and end with a clean diagram. That is not the situation most teams are actually in. The situation is a Confluence page from 2019, a router config someone exported last quarter, and a network engineer who swears "the 10.40.0.0/16 is in use somewh...

Tea-sip
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The Bug That Passed Every Test — And Still Took Production Down
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DEV Community · Technology

The Bug That Passed Every Test — And Still Took Production Down

A few years ago, I was working on a backend service that looked completely healthy. Tests were green. CPU usage was normal. Memory looked fine. No obvious exceptions were showing up in the logs. And yet, every few hours, requests would suddenly slow down. Not fail. Just become painfully slow. T...

Dinesh
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A GIF re-encode made the file 4.5x bigger. Interframe differencing fixed it.
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DEV Community · Technology

A GIF re-encode made the file 4.5x bigger. Interframe differencing fixed it.

Cropping a GIF should not make it bigger. Ours did, and not by a little: a 288-frame Foucault pendulum went from 1074 KB in to 4881 KB out, and a 70-frame gun turret went 116 KB to 1232 KB. That is 455% and 1062%. The same thing happened with no crop at all, which is the detail that gives the cause...

이준김
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Speaker - Microsoft Build 2026 Community Event
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DEV Community · Technology

Speaker - Microsoft Build 2026 Community Event

On June 6, 2026, I had the opportunity to speak at the Microsoft Build 2026 Community Event, held at IDAT Lima Centro as part of the Azure User Group Latam community. The event brought together developers and technology professionals to explore topics related to Microsoft Build 2026, including gene...

Jorge Aurelio de la Flor Argandoña
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Seven interview rounds is a confession that your bar is broken
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DEV Community · Technology

Seven interview rounds is a confession that your bar is broken

If you have to go through seven interview rounds, it's not thorough process - it's a hostage situation. A company that needs seven conversations to decide on you is telling you it can't read a signal. So they're going to wear you down until you're the only one left. What long loops actuall...

Aditya Agarwal
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GSoC 2026 Final Report: Automated Webpack Documentation Pipeline 💫
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DEV Community · Technology

GSoC 2026 Final Report: Automated Webpack Documentation Pipeline 💫

Name: Mohamed Shams El-Deen (@moshams272) Organization: Webpack Mentors: Aviv Keller (@avivkeller), Claudio Wunder (@ovflowd), Sebastian Beltran (@bjohansebas) GSoC Teammates: Nikhil Kumar Rajak (@ryzrr), Tushar Thakur (@TusharThakur04) Introduction As part of Google Summer of...

Mohamed Shams El-Deen
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🧐 ECS Express Mode vs Traditional ECS: A Hands-on Comparison with Terraform
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DEV Community · Technology

🧐 ECS Express Mode vs Traditional ECS: A Hands-on Comparison with Terraform

Hola Amigos 👋 Welcome to the world of Cloud and Automation! AWS launched ECS Express Mode in late 2025, and in today’s blog, we will understand how it compares to traditional AWS ECS. We will use a basic Flask portfolio website with three versions to illustrate how both approaches hand...

Pravesh Sudha
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As I said, Alea AIcta est.
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DEV Community · Technology

As I said, Alea AIcta est.

An argument against the intensive use of AI in development is appearing more and more often, and it could be paraphrased like this: "the more code agents generate, the further developers move away from the codebase they are supposed to understand and maintain." And the argument is not without merit...

Dejan S. Višekruna
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Stop Killing Your Database with @Transactional in Spring Boot
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DEV Community · Technology

Stop Killing Your Database with @Transactional in Spring Boot

The 1-minute fix that slashed my API response time by 40%. We all know @Transactional makes database work easy. But are you using it correctly? Here is a mistake I see in 8 out of 10 code reviews: ❌ The Anti-Pattern: @Service public class OrderService { @Transactional public...

Sayuri Kotikawaththa
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Title Information Doesn't Add Aggression — It Removes Calibration Risk
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DEV Community · Technology

Title Information Doesn't Add Aggression — It Removes Calibration Risk

Follow-up to the storm post — same engine, two new systems, and a number I didn't expect. The experiment Same blind mountain pass. Same pincer maneuver. Four doctrines, 80 seeded runs each, one question: how much does knowing where the enemy is actually matter, compared to just guessing well? doc...

Joseph Magombe
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When Learning to Code Becomes a Loop: Why I’m Choosing to Build
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DEV Community · Technology

When Learning to Code Becomes a Loop: Why I’m Choosing to Build

There was a period when I felt like I was making progress as a developer.I was watching tutorials. Taking courses. Learning new concepts. Saving resources. Watching someone build something and thinking, “Okay, I understand this now.” Then I would move on to the next thing. HTML? Done. CSS? I underst...

Goldheart JW
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Bring Your Own Key: Building an AI Portal That Never Touches the Billing
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DEV Community · Technology

Bring Your Own Key: Building an AI Portal That Never Touches the Billing

Bring-your-own-key, not another subscription Every few months another "all AI models in one place" product shows up, and almost all of them work the same way: you pay them a subscription, and they resell access to Claude, GPT-4, Gemini and friends at a markup. That's a reasonable business...

Mirko Stahnke
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One Knowledge Base, Four Surfaces: Pages, Graph, Search Index, and MCP
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DEV Community · Technology

One Knowledge Base, Four Surfaces: Pages, Graph, Search Index, and MCP

Originally published on michael-kaminski.io. The Genome of Games publishes the same 1,180 records four different ways, and one command writes all four: node build.js, 0.39 seconds, zero npm dependencies. Out come 1,245 static HTML pages for crawlers, an interactive canvas graph for humans, a 129,0...

Michael Kaminski
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Code Review in the AI Era
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DEV Community · Technology

Code Review in the AI Era

One thing I have been thinking about a lot recently is how AI is changing not only the way we write code, but also some of the engineering processes we have built around software development. One of the most interesting ones, in my opinion, is Code Review. For a long time, Code Review was never ju...

Shayan Mirzaie
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How I Built Smart Scraper M2M: A Fast ~30ms Scraper API for AI Agents
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DEV Community · Technology

How I Built Smart Scraper M2M: A Fast ~30ms Scraper API for AI Agents

Building AI Agents with frameworks like CrewAI or LangChain often hits a bottleneck: heavy, slow web scraping that bloats context windows and increases LLM token costs. To solve this, I built Smart Scraper M2M — a lightweight, high-performance web scraper API designed specifically for machine-to-ma...

hasna dev
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Why engineers need commercial awareness, not just technical depth
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DEV Community · Technology

Why engineers need commercial awareness, not just technical depth

Engineers who only understand the technology, and never the business it serves, hit a ceiling early. The best ones develop commercial awareness — a real sense of how value is created, funded, and sold. Two days at 21BY72 Season 4, one of Bharat's leading startup summits — eighty-five ventures on the...

Divyakush Punjabi
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Keeping Mac work alive without pretending awake means safe
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DEV Community · Technology

Keeping Mac work alive without pretending awake means safe

A developer usually meets Mac power management through a simple need. A build, local server, download, or agent is still running, and idle sleep would interrupt it. The caffeinate command can be enough for that open lid case. Lid close is a different boundary. An idle sleep assertion does not mean...

AfterLid
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A hackathon is a compression test for how you actually work
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DEV Community · Technology

A hackathon is a compression test for how you actually work

A hackathon is a compression test for how you work. Everything you'd normally have weeks for gets squeezed into a window measured in hours — scoping, building, integrating, presenting — and what survives that compression tells you a lot about an engineer. Leading SYNTAX TERMINATOR to the top 12 of m...

Divyakush Punjabi
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Why I built my own technical blog website.
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DEV Community · Technology

Why I built my own technical blog website.

Why I Built My Own Technical Blog Website I wanted a place to write about software engineering, projects I’m building, and things I learn along the way. There are plenty of existing blogging platforms, but building my own gave me something those platforms couldn’t: complete control....

John Haab
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