Morning.dev

What Is GitHub Copilot Custom Instructions? (And Why Your Project Needs One)
GitHub Copilot custom instructions explained simply — what the file is, why every project benefits from one https://blog.msdevbuild.com/blog/github-copilot-custom-instructions/

DEV Community • 2026-07-27 01:57

What Is GitHub Copilot Custom Instructions? (And Why Your Project Needs One) GitHub Copilot custom instructions explained simply — what the file is, why every project benefits from one https://blog.msdevbuild.com/blog/github-copilot-custom-instructions/

What Is GitHub Copilot Custom Instructions? (And Why Your Project Needs One) | MSDEVBUILD blog by Suthahar GitHub Copilot custom instructions explained simply — what the file is, why every project benefits from one, and the mistakes beginners make when writin...

0 0

1m read

DEV Community • 2026-07-27 01:49

I Built an AI Team That Investigates Production Incidents Better Than Most Engineers

Built for the **SigNoz "Agents of SigNoz" Hackathon — July 2026** Production Incidents Shouldn't Take Hours to Investigate Every engineer who has been on call knows the feeling. An alert fires in the middle of the night. Dashboards turn red. Error rates spike. Customers begin reporting failures. The incident itself may eventually be simple—a database timeout, an exhausted Redis co...

0 0

8m read

DEV Community • 2026-07-27 01:49

Django 6.0 Tasks com TDD: três paredes que o caminho feliz esconde

O Django 6.0 trouxe um framework de tasks nativo. Segui o tutorial, funcionou de primeira — e foi exatamente aí que desconfiei. Decidi refazer tudo com TDD, escrevendo o teste antes de cada linha. Bati em três paredes que o caminho feliz não mostra. Este artigo documenta as decisões e os tropeços do cotton-desk-tasks, uma mesa de comercialização de algodão fictícia construída sobre o tutorial de ...

0 0

11m read

DEV Community • 2026-07-27 01:45

How to review AI-generated code without losing ownership of your project

AI can finish a feature faster than we can absorb its assumptions. The practical review question is not only ‘does this work?’ but ‘could I explain why it works, where it can fail, and what it changes tomorrow?’ A useful review loop starts narrow and expands only when needed. Begin with the selected expression, then inspect its function, file, dependencies, git change, and the project decision be...

0 0

1m read

DEV Community • 2026-07-27 01:44

Parallel Selenium Tests in Java Without Thread-Safety Bugs

Your suite is green. Someone sets thread-count="4" to get CI under ten minutes, and now three tests fail. Re-run: two fail, and not the same two. Run it locally and everything passes. That's not flakiness in your application. That's your test framework being unsafe under concurrency, and it was unsafe the whole time — one thread was just hiding it. The advice you'll find in ten minutes of search...

0 0

12m read

DEV Community • 2026-07-27 01:43

The LLM Narrates, the Core Decides: Anatomy of an AI Checkout

How we built a checkout that runs the same protocol in a chat window, a voice session, and a live phone call. One word, many moves On the AI storefront platform I work on, a customer can type "checkout" into a chat window — or say it to a voice agent or a phone line — and, a short conversation later, they have an order number. The transcript looks unremarkable: a question about special...

0 0

14m read

Experienced Devs • 2026-07-27 01:40

Wtf is with this job market?

Senior SWE with 10 YOE. I’ve applied to about 40 roles over the past month and not heard anything back except automated rejections. My resume is strong. Worked for some great well known tech organizations. The last time I was looking for a job everyone was clamoring to hire. It’s getting depressing. Anyone else facing the same thing? submitted by /u/OuchCharlie25 [link] [comm...

0 0

1m read

DEV Community • 2026-07-27 01:38

Your Turn Is a Session Handoff, Not a Completion Claim

When a coding agent stops producing output, the next step is not automatically yours. It may be waiting on a tool, calculating, stalled, or actually finished. A useful your-turn state needs stronger evidence than silence. The definition I use is narrow: your-turn means a specific Claude Code or Codex session has produced evidence that the next useful action belongs to the developer. Pro...

0 0

2m read

DEV Community • 2026-07-27 01:38

How the Amazon ECS deployment circuit breaker detects failures

How Amazon ECS Deployment Circuit Breaker Detects Failures Amazon ECS (Elastic Container Service) uses a deployment circuit breaker to automatically roll back failed deployments. This feature monitors the health of your service during a deployment and triggers a rollback if critical failures occur. Here’s a detailed breakdown of how it detects failures: 1. Prerequisites for...

0 0

4m read

4 Best LinkedIn NFC Keychains for Professional Networking in 2026

DEV Community • 2026-07-27 01:33

4 Best LinkedIn NFC Keychains for Professional Networking in 2026

Best LinkedIn NFC Keychains for Professional Networking solve a very specific problem: you get 10 to 30 seconds to make a real-world connection, and most people still fumble for a phone, misspell a name, or promise to “send the link later” and never do. In live networking settings, that delay kills momentum fast. 🏆 Best LinkedIn NFC Keychains for Professional Networking in July 2026 We...

0 0

12m read

DEV Community • 2026-07-27 01:32

Building a Dice Roller That Teaches Probability: Batches, Histograms, and CSV

A dice roller looks like a one-line project: const value = Math.floor(Math.random() * 6) + 1; That line is enough to draw a number from 1 through 6. It is not enough to make a useful probability tool. The interesting engineering begins when a user asks the next questions: Can I roll several dice at once? Can I run 10, 50, or 100 trials without freezing the page? Is the result distribut...

0 0

10m read

Lemonade Second Squeeze: Model Archeology on 2019's GPT-2XL

DEV Community • 2026-07-27 01:24

Lemonade Second Squeeze: Model Archeology on 2019's GPT-2XL

Two weeks ago I had never run an AI model on my own machine. Every project I had ever built phoned a cloud API with a key sitting in it. Then I sat in the vibecoding lab at AMD's Advancing AI 2026 summit and watched a model answer a question from a laptop, nothing leaving the room, and I got the itch. I have a pattern. When something lights me up, I chase it before I am ready. This was that. I pi...

0 0

5m read

DEV Community • 2026-07-27 01:22

Why Your AI Agent Drowns in 50,000 Tokens of Tool Definitions

Why Your AI Agent Drowns in 50,000 Tokens of Tool Definitions You have 50 MCP servers. Each one defines 10-20 tools. That's 500-1,000 tool schemas, each with parameters, descriptions, and type definitions. Dump all of that into your AI agent's context window and you've just consumed 50,000 tokens before you've said a single word. Your agent is now drowning. It can't think about your actual proble...

0 0

2m read

DEV Community • 2026-07-27 01:22

Privacy-First Vision AI: Running Quantized ViT Models in the Browser with WebAssembly 🚀

Have you ever hesitated before uploading a sensitive photo to a cloud-based AI service? When it comes to healthcare applications, especially skin lesion screening, privacy isn't just a feature—it's a requirement. In this tutorial, we are going to build a high-performance, Edge AI application that performs real-time skin lesion analysis directly in the browser. By leveraging TensorFlow.js, WebAss...

0 0

3m read

DEV Community • 2026-07-27 01:18

The Model Writes, the Judge Measures: Anatomy of an LLM Judge

Here is the kind of sentence that should keep a team up at night: "At this clarity grade, you won't see a thing with the naked eye." Our assistant produced it while explaining a diamond. The grade it cites is real — SI1, printed on the stone's lab report. The promise attached to it is invented. A clarity grade is assigned under 10× magnification; it does not resolve what a naked eye will see. ...

0 0

16m read

DEV Community • 2026-07-27 01:16

The Factory Builds, the Evidence Admits: Anatomy of an Agent Certification

Sooner or later, someone across the table asks the question. A client's security team. An auditor. An acquirer's diligence engineer. A regulator. Or you, at two in the morning: "Why is this agent allowed to do that?" Not does it work — demos answer that, and demos are cheap. Not how good is it — benchmarks answer that, about someone else's test set. The question is why it is allowed: what, con...

0 0

15m read

DEV Community • 2026-07-27 01:12

Replace Career-Change Confidence With a 14-Day Decision Loop

Career-transition advice often ends with some version of “believe in yourself.” That may be emotionally welcome, but it does not answer the question sitting in front of you: Should I spend the next month learning more, applying for roles, building a project, or staying where I am? The tension is not simply fear versus courage. You are being asked to make a consequential decision with incomplet...

0 0

11m read

DEV Community • 2026-07-27 01:10

Catching the Attack Was Not the Same as Detecting the Sequence

I wrote a suite for one class of authorization failure, scored my own gates with it, and a reviewer showed me that a gate modelling nothing could beat a real one. Here is the suite, the three gaming strategies it now rejects, and the exact boundary of what a score can prove. git clone https://github.com/keniel13-ui/sequence-attack-repro cd sequence-attack-repro && python3 adapter.py ...

0 0

11m read

DEV Community • 2026-07-27 01:09

AI Won't Replace You — But Another Builder Will

Tags: ai, career, productivity, discuss Last month I met a developer at a Shenzhen tech meetup who told me he was "waiting to see where the AI thing goes" before deciding whether to learn it. He's been waiting for two years. In that same two years, I've watched someone with zero coding experience ship a working SaaS product using Cursor and Claude. The gap between these two realities is what ...

0 0

3m read

DEV Community • 2026-07-27 01:08

"Is it actually running?" — the night I asked three times while stitching 17 images into one video

I run a little pipeline that builds history-explainer videos end to end — script, narration, images, video — all automatically, all by myself. Up until one day, the background was a single picture, slowly zooming. Two and a half minutes. Same picture the whole time. It got old, fast. So I rebuilt it: switch to a different picture on every sentence. A 17-sentence script means 17 pictures. Easy to...

0 0

5m read