DEV Community • 2026-04-23 06:00

Stop Flickering UIs: Handle Subdomains with Next.js Edge Middleware ⚡

The Challenge of Dynamic Subdomains When scaling a professional B2B SaaS platform at Smart Tech Devs, providing clients with their own custom subdomains (e.g., acme.smarttechdevs.in) is a premium feature that instantly elevates your brand. However, architecting this on the frontend can be complex. In a monolithic React app, you might find yourself writing messy `useEffect` hooks to parse the wind...

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DEV Community • 2026-04-23 05:52

BPMN as config: one vocabulary runs the model, the runtime, and the analytics

BPMN 2.0 lets you put arbitrary attributes in your own namespace on any element. The established BPM runtimes — Camunda and Flowable — both preserve those attributes through parsing and make them accessible at runtime. That's table stakes for the spec; neither engine violates it. What differs is how those attributes reach your code. In Camunda, a Java delegate pulls the current BPMN model instanc...

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Fonctionnement d’une blockchain - Étape 5/8 : Lien “maillon - maillon”
DEV Community • 2026-04-23 05:51

Fonctionnement d’une blockchain - Étape 5/8 : Lien “maillon - maillon”

Chaque bloc pointe (par hash) vers le bloc précédent. Ce chaînage rend l’historique difficile à falsifier car modifier un ancien bloc casserait tous les hashes suivants. Qu’est-ce qu’un hash ? Un hash est une empreinte digitale unique créée à partir d’une information. Une même donnée donne toujours le même hash Une seule petite modification donne un hash complètement différent Imp...

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DEV Community • 2026-04-23 05:50

Proofdesk — The IDE for Open-Source Math Textbook Publishing

github proofdesk Inspiration Math professors who write open-source textbooks are stuck in a painful loop: edit XML in a text editor → open a terminal → run a Docker build that takes 15 minutes → refresh a browser → realize one equation is wrong → repeat. There's no integrated workspace for it. Tools like Overleaf exist for LaTeX, but nothing exists for PreTeXt — the modern XML-based fo...

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DEV Community • 2026-04-23 05:49

Learning Artificial Intelligence on Microsoft Azure: A Beginner’s Roadmap

Artificial Intelligence isn’t a distant frontier anymore—it’s infrastructure. And if cloud is the backbone of modern systems, then AI is the intelligence layer riding on top of it. Platforms like Microsoft Azure have quietly transformed AI from a research domain into a practical, deployable skill. But here’s the catch: most beginners get lost—not because AI is too hard, but because the roadmap is ...

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DEV Community • 2026-04-23 05:49

Building MCP Servers in Python: a production primer for 2026

The Model Context Protocol (MCP) went from "Anthropic side project" to industry standard in eighteen months. As of March 2026, MCP SDKs are pulling 97 million monthly downloads. Every serious agent framework — Claude, Cursor, OpenAI Agents SDK, Microsoft Agent Framework — speaks MCP natively. If you're a Python backend engineer, MCP is the most leveraged thing you can learn right now. This post i...

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DEV Community • 2026-04-23 05:48

So You Vibe Coded an App. But Can It Survive Real Users?

Let me be upfront — I'm not here to bash Vibe Coding. I've written about using AI to build, and I stand by it. But there's a conversation we're not having enough in this community, and it's this: shipping an app is not the same as building a production-ready one. Anyone can get an app live in a weekend with AI. The real question is what happens on Monday — when real users show up, internet conne...

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Analysis internal data safely with Hermes agent and OneQuery
DEV Community • 2026-04-23 05:41

Analysis internal data safely with Hermes agent and OneQuery

Personal Agents, such as Hermes Agent and OpenClaw, are powerful. They can perform deep analysis on internal data, and the results can be great. But there are safety issues. An agent can read real secret values. If your messaging channel gets hacked and an attacker can prompt your personal agent, they may be able to access your secrets. An agent can update or delete your internal data. As models...

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DEV Community • 2026-04-23 05:39

I Built a Local AI VRAM Calculator & GPU Planner (Beta)

I added a new tool to the site: the Local AI VRAM Calculator & GPU Planner (Beta). This came out of a problem I kept running into while experimenting with local models. It is surprisingly easy to end up with a setup that technically works, but does not actually match the kind of workloads you want to run. This is mainly aimed at figuring out GPU and VRAM requirements for running local LLMs. ...

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Shadow Deployments for AI Agents: Test in Prod without breaking anything 🚀
DEV Community • 2026-04-23 05:39

Shadow Deployments for AI Agents: Test in Prod without breaking anything 🚀

If you’ve worked with AI agents in production, you already know one thing. Deploying a new version is not the same as deploying traditional software With non AI systems, you push code and then run tests. If everything looks fine then you go live With agents, things get messy. The same input can produce slightly different outputs. Improvements in reasoning might come with unexpected side effects....

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DEV Community • 2026-04-23 05:35

Why Technical Startups Fail: Building in a Vacuum

There is a specific, lonely moment that every technical founder eventually faces. It is the moment the code is clean, the architecture is scalable, and the beta version is ready to launch. You look at your screen, proud of the elegant solution you've built, and you expect the world to beat a path to your door. Instead, the silence is deafening. You send out a few emails to your network. You post ...

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DEV Community • 2026-04-23 05:31

gpt-image-2 API Developer Guide: Pricing, Thinking Mode, and Production Integration (2026)

gpt-image-2 API Developer Guide: Pricing, Thinking Mode, and Production Integration (2026) OpenAI announced gpt-image-2 on April 21, 2026 — but the official API doesn't open to developers until early May 2026. That gap between "announced" and "shippable" is exactly when developers need to architect, budget, and prototype. This guide covers everything a developer needs to know now: the p...

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DEV Community • 2026-04-23 05:20

The Primeagen's '99': A New Approach to AI in Code Editors

The Perpetual Struggle: Why Current AI Integrations in Code Editors Often Fail Many developers have experienced the frustration of integrating AI assistants directly into their code editors. The common pitfalls include: Clunky User Experience: AI tools that feel out of place and disrupt the natural coding flow. Lack of Contextual Understanding: AI that doesn't grasp the nuances of your spe...

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DEV Community • 2026-04-23 05:20

Best resources to learn game development with Node.js

Every few months, someone asks me, What are the best resources to learn game development with Node.js? The question usually comes from one of two places. Either someone has fallen in love with JavaScript and wants to build games without leaving the ecosystem, or they’ve seen that multiplayer games often use Node on the backend and want to understand how it all fits together. The tricky part is th...

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DEV Community • 2026-04-23 05:19

Building an AI Helpdesk SaaS with Agentic Automation

Hey devs 👋 I just built a full-stack AI SaaS helpdesk platform focused on automation, intelligent ticket handling, and what many are starting to call agentic AI systems. 🚀 The Idea Most support systems are reactive. I wanted something that: Understands tickets automatically Makes decisions Takes actions without constant human input Inspired by platforms like Deptheon-style archit...

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DEV Community • 2026-04-23 05:18

The Nine-Year Journey to the Orca Emoji (U+1FACD) — How a Single Character Moved the World

I love orcas, so I always felt a bit sad that while we had whale (🐋) and dolphin (🐬) emojis, there was no orca. Then recently, I came across news that the orca emoji would be introduced in iOS 26.4[1]. Since emoji aren't an Apple-proprietary thing — they're defined by an international standard called Unicode — I knew this had to be a bigger story. So I dug in. What I found was the story behind th...

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DEV Community • 2026-04-23 05:18

シャチ絵文字（U+1FACD）がUnicodeに採用されるまで — 1文字のために世界が動いた9年越しの軌跡

シャチ絵文字（U+1FACD）がUnicodeに採用されるまで — 1文字のために世界が動いた9年越しの軌跡 私はシャチが好きである。なので、クジラ（🐋）やイルカ（🐬）の絵文字はあるのにシャチがないことを残念に思っていた。 しかし最近、iOS 26.4からシャチの絵文字が追加されるというニュースを目にした[1]。絵文字はApple独自のものではなくUnicodeという国際標準で定められているはずだから、これはもっと大きな話のはずだ — そう思って調べてみた。 すると見えてきたのは、新しいシャチの絵文字 🫍 の裏にある、9年にわたって世界各地の人々がUnicode標準への採用を求め続けた物語だった。 シャチ絵文字の基本情報 項目 内容 コードポイント U+1FACD 名称 ORCA 収録ブロック Symbols and P...

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DEV Community • 2026-04-23 05:17

AgentGraph Update

Deep technical post (2000+ words): threat model for MCP (credential theft, exfil, unsafe exec, FS access, obfuscation), methodology, aggregate findings with anonymised examples, how to run mcp-security-scan locally + in CI via GitHub Action. Soft mention that trust scores feed into AgentGraph badges. Clearly disclosed as bot-authored content from AgentGraph team.

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Hacker News: Front Page • 2026-04-23 05:14

Ars Technica: Our newsroom AI policy

Article URL: https://arstechnica.com/staff/2026/04/our-newsroom-ai-policy/ Comments URL: https://news.ycombinator.com/item?id=47872452 Points: 5 # Comments: 1

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Building a Smart Environmental Monitoring System with Google Cloud (Inspired by NEXT ‘26)
DEV Community • 2026-04-23 05:13

Building a Smart Environmental Monitoring System with Google Cloud (Inspired by NEXT ‘26)

Building a Smart Environmental Monitoring System with Google Cloud (Inspired by NEXT ‘26) This is a submission for the Google Cloud NEXT Writing Challenge 🌍 Why Google Cloud NEXT ‘26 Caught My Attention Every year, Google Cloud NEXT brings new ideas, but this time what stood out to me was the strong push toward real-time data processing, AI integration, and scalable cloud-na...

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