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DEV Community · Technology

Why Your Eyes Burn by Evening: Digital Eye Strain and the 20-20-20 Rule

By the end of the day my eyes burn. The screen goes fuzzy for a second when I look up, focusing on something across the room takes longer than it should, and a dull headache creeps in around the temples. I used to write this off as "just tired." Turns out it has a name and a fairly simple mechanism...

Kirill Lukyanov 4 days ago

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DEV Community · Technology

I built a vulnerability scanner that refuses to lie to me

Static analysis tools have a trust problem. They read your source, pattern-match something that looks injectable, and hand you a warning — plus, increasingly, an AI-generated "fix." You have no idea if the warning is real or if the fix works. You just get more things to check. I wanted the opposite...

Hassan Balbakie 4 days ago

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DEV Community · Technology

Taming Kubernetes Cost Sprawl: A FinOps Blueprint for Executives

Introduction & Industry Context As organizations increasingly embrace cloud-native architectures, Kubernetes has become the de facto operating system for the modern data center — both on-premises and in the public cloud. Its unparalleled ability to orchestrate containers, manage compl...

Muhammad Tahir 4 days ago

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DEV Community · Technology

Tech webinar: How to control costs & measure ROI for Claude Code on GCP - 9/1 12pm PT.

If your team is running or planning to deploy Claude Code on Google Cloud, managing spend and measuring business impact is essential. Roy Arsan (Anthropic) and Ivan Nardini (Google Cloud) are hosting a deep-dive webinar on September 1, 2026 @ 12:00 PM PT on setting up governance via the Claude apps...

Jen Harvey 4 days ago

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DEV Community · Technology

AI is Not Alive...Yet

"We're made of star stuff..." Consider an antelope standing on a small rise in the middle of the savanna. Off to one side, emanating from a patch of tall grass, there is a rustle. Now, this rustle may just be the wind, or it may be the first steps of a predator about to pounce. Millions o...

Joshua Ballanco 4 days ago

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DEV Community · Technology

CI/CD Pipelines That Actually Work: A Journey Through the Matrix

The Quest Begins (The "Why") Honestly, I used to stare at my CI/CD yaml files and feel like Neo stuck in the loading screen—except the only thing loading was my frustration. Every push triggered a cascade of jobs that duplicated the same steps over and over: lint, test, build, deploy. Cha...

Timevolt 4 days ago

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DEV Community · Technology

I Won a Writing Challenge That I Almost Didn't Publish!

All praise to almighty God, and thanks to Google and the DEV Team, a while back, I won the Google Cloud NEXT '26 Writing Challenge! Congrats to the Google Cloud NEXT '26 Writing Challenge Winners! Google Cloud NEXT '26 Winners...

Fayaz 4 days ago

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DEV Community · Technology

I Built an Open-Source QA Agent Because AI Shouldn’t Grade Its Own Homework

AI coding tools are getting ridiculously good. You can describe a feature, let an agent implement it, ask it to write tests, and sometimes have something working in minutes. But there’s a problem I kept thinking about: What happens when the same AI writes the code and then validates its own unde...

Kidus Mesfin 4 days ago

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DEV Community · Technology

Building ML Gatekeeper: Automated Pipeline Governance with Multi-Agent Systems and GitLab CI/CD

1. Architectural Overview Traditional CI/CD pipelines rely on static assertion scripts that fail silently on dynamic edge cases. ml-gatekeeper-multiagent replaces static checks with autonomous, specialized agents that evaluate model metrics, check data drift thresholds, and analyze compli...

Nikhil raman K 4 days ago

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DEV Community · Technology

Building Multi-Region Consensus Checks with Cloudflare Durable Objects

Every uptime monitor I've used has woken me up for an outage that never happened. The mechanism is always the same, and it isn't a bug. A monitor checks your endpoint from one location. Somewhere between that prober and your server, a packet drops, or a route flaps, or a TLS handshake takes 400ms l...

Alex Gutscher 4 days ago

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DEV Community · Technology

Authentication Audit Trails: Correlating Risk Events with Session Lifecycle Actions

Short answer: Give every login attempt, risk decision, and session mutation one correlation ID, then record immutable events before enforcing the decision. For an edtech login scored from a device fingerprint, the useful trail is not a pile of request logs. It is a causal chain that can answer which...

LukasSchmidt295 4 days ago

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DEV Community · Technology

CMTE v2.0 – Real-time Syntactic Telemetry HUD & Engine Stream

What if your text editor could track your cognitive fatigue in real time? I built CMTE v2.0, a lightweight client-side telemetry HUD that turns raw stylus inputs into dynamic syntactic metrics while streaming live backend engine state. Live Demo: https://cognimetrics-mobile-ng5e.bolt.host How...

CogniMetrics 4 days ago

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DEV Community · Technology

What makes a good online reading platform?

I've used online fiction platforms from more than one side. First, I was a reader, then I started writing web fiction. Later, I became involved in editorial work. Each role made me care about different parts of a reading platform. As a reader, I mostly cared about one thing: Can I find something i...

Kalipindi Chaitanya Kumar 4 days ago

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DEV Community · Technology

Effective AI Agents with GitHub Copilot

The most successful AI agent do NOT use complex and over-engineered frameworks. Instead, they use simple, modular patterns. To use agents you don't need to learn massive third-party agent frameworks to build powerful AI assistants. Using GitHub Copilot you get all pieces natively: Copilot Agent...

Majdi Zlitni 4 days ago

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DEV Community · Technology

AI UI Testing: Why Local Demos Hit 9/10 and Production Hits 6/10

AI UI Testing: Why Local Demos Hit 9/10 and Production Hits 6/10 We built TestStar, an AI UI testing platform. Here's what we learned from 8 runs of one real case. The gap nobody talks about If you've used any AI browser-testing tool in 2025-2026, you've probably hit this...

YmAICode 4 days ago

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DEV Community · Technology

The data is in: AI is how developers learn now

AI is now the most common way that new developers learn. We all knew AI was having an impact on developer go-to-market but it's not just about who or what is writing the code. In Major League Hacking's latest Season Census of developers globally, 75% of verified respondents use AI in some form to...

Matthew Revell 4 days ago

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DEV Community · Technology

AI Agents: A High-Level Overview

In my quest to learn about Agents progressively, I’m currently taking the Google Cloud Agentic Summer course, powered by Gemini Enterprise Agent Ready (GEAR). I’ll be making frequent posts to share and re-enforce my learning around agents and ai-native documentation. So, if this is something you’re...

Elizabeth Bassey 4 days ago

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DEV Community · Technology

SSL Certificate Problem: Unable to Get Local Issuer Certificate

You open the site in a browser and the padlock is green. Then your app tries to call the same host and dies: curl: (60) SSL certificate problem: unable to get local issuer certificate Node says it a different way — Error: unable to get local issuer certificate, UNABLE_TO_GET_ISSUER_CERT_LOC...

Merlonix 4 days ago

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DEV Community · Technology

155 tests passed. Every real request failed.

This is a submission for DEV's Summer Bug Smash: Clear the Lineup powered by Sentry. Project Overview I build GigLegal alone. It is a contracts tool for freelancers, running on Next.js 15 with Prisma, and it carries 155 Playwright end to end spec files. One feature matters for this stor...

dphantomx 4 days ago

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DEV Community · Technology

I got annoyed at just enough times that I wrote my own version

I use just on basically every project I touch. It's good. But there were a few things about it that annoyed me often enough that I ended up writing my own runner instead of just living with it, which is how you end up with yet another CLI tool nobody asked for. Anyway, here it is: ndo. Three things...

Green Threads 4 days ago

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DEV Community · Technology

The notification system you didn't plan to build

Originally published on the Elaan blog. Sending one email is one line of code. The system that grows around it takes months. We had to build that system three times for different products before making it the product, so here is the case for building it yourself and the case against, argued through...

Elaan.io 4 days ago

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DEV Community · Technology

Designing Algorithms That Adapt to Their Input Distribution

Most algorithms are taught as if the input were some abstract thing that simply arrives at the function boundary. An array appears. A graph appears. A stream of numbers appears. A database query arrives. Then the algorithm runs. We analyze its complexity, usually in terms of n, and declare vic...

Derek Mwale 4 days ago

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DEV Community · Technology

Why scrolling screenshots fall apart on video feeds

I maintain a small Android app that stitches a scrolling screen into one long image. It worked well until people started pointing it at social feeds, and then users began reporting that captures "overlapped" around video posts. Chasing that report taught me it was two separate defects wearing one d...

Codnet Software Company 4 days ago

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DEV Community · Technology

Why Javascript isn't going anywhere in 2026

Every few months, a new tool claims to "kill" JavaScript. But the reality? JS isn't going anywhere—it’s just evolving. Here is why the JavaScript ecosystem still dominates modern software: Universal Language: It remains the only language running natively across every browser engine on Earth. Full...

Ashikur Rahaman Ahad 4 days ago

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