Morning.dev

DEV Community • 2026-08-09 18:35

Building Web Tools That Actually Serve Emerging Markets

There's a fundamental question I keep coming back to when building for the web: Who are we actually building for? If you're reading this on a 5G connection with a flagship phone, it's easy to forget that most of the world doesn't have that luxury. According to the GSMA, nearly half the global population still isn't using mobile internet, and for those who are, connections are often slow, data is ...

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6m read

DEV Community • 2026-08-09 18:31

What actually happens when someone steals your LUKS-encrypted disk

I set up TPM auto-unlock on my laptop a while back — systemd-cryptenroll, bind to a couple of PCRs, disk unlocks silently on boot, no more typing a passphrase every morning. Nice quality-of-life win. Then a friend asked me a question I didn't have a great answer to: "okay but if someone actually steals the laptop, doesn't the TPM just... hand over the key for them too?" I didn't like that I had ...

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4m read

DEV Community • 2026-08-09 18:29

Privacy in Plain Sight: What 3 Calculator Platforms Tell Us About Data Collection

Online calculators are everywhere. Need to check your BMI? Calculate a mortgage payment? Figure out your GPA? There's a free tool for that. But here's the uncomfortable question: What happens to the numbers you type in? Most of us assume these tools are private. We're just doing math, right? But behind the scenes, the data you enter—your weight, your salary, your savings goals—can be valuable. A...

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6m read

DEV Community • 2026-08-09 18:24

Where Does Judgment End and Runtime Policy Begin?

AWS introduced something this week that is close enough to the problem I have been working on that I do not think it should be casually labeled complementary. Amazon Bedrock AgentCore added temporal policies, along with an open-source policy language called Dogwood. Instead of asking only whether an individual tool invocation is allowed, the gateway can evaluate the sequence of actions that led ...

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5m read

DEV Community • 2026-08-09 18:24

How I Protected My Express API from Spam and High AI Costs Using Redis

When I was building my backend API, I realized a big problem: anyone could spam my endpoints. If a user repeatedly reloads a page or hits an endpoint calling an external AI service, it can crash the server or run up high API costs. To fix this, I added Rate Limiting. Here is why I used Redis for it and how I set it up. The Problem with Simple In-Memory Limiters At first, I thought a...

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3m read

DEV Community • 2026-08-09 18:21

Why I Built a Zero-Dependency, Single-File Go Clipboard for Terminal Junkies

If you spend most of your day inside a terminal, you already know the frustration of moving snippets, quick logs, or config chunks between a remote headless server and your local machine.Existing clipboard or pastebin tools usually require full browser sessions, bloated client apps, database setups, or heavy third-party npm packages. I wanted something dead-simple: No signup, no database, zero dep...

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3m read

DEV Community • 2026-08-09 18:20

Topic selected: Option A – Purely Technical: "Building a Secure AI Proxy for Browser Tools

This is the strongest choice. It teaches a tangible, highly demanded skill (API key security) with actual code, making the backlink to AfriWidget feel like a natural, neutral citation rather than a sales pitch. Here is the article, rewritten to be strictly technical, objective, and genuinely useful for dev.to readers. Stop Exposing Your AI API Keys: Build a Secure Proxy with Cloudflare Worker...

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6m read

DEV Community • 2026-08-09 18:20

Who Did This? Identity Across Async Boundaries

You put a lot of work into authentication. A gateway validates the Keycloak JWT, maps realm roles to authorities, checks that the caller is allowed. By the time a request reaches your service, you know exactly who is calling. Then the request crosses into async land, and all of that evaporates. This is the story of the point where identity quietly disappears in an event-driven system, why the de...

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8m read

DEV Community • 2026-08-09 18:13

Absorber les +50 % de l'API Claude sans couper une feature

Le 1er septembre 2026, le tarif de lancement de Claude Sonnet 5 s'arrête. L'input passe de 2 $ à 3 $ le million de tokens, l'output de 10 $ à 15 $ : +50 % sur les deux lignes, pour tout le monde qui appelle l'API en paiement à l'usage. La panique par défaut, c'est de couper des fonctionnalités ou de rétrograder vers un modèle plus faible. Il y a mieux, et c'est déjà dans l'API. Deux mécanismes — l...

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6m read

DEV Community • 2026-08-09 18:12

Our AI Agent Failed 5 Times in One Day. Here is Why It Never Happened Again.

Our AI Agent Failed 5 Times in One Day. Here is Why It Never Happened Again. LAO Runtime Protection in action — real failures, self-repaired, permanently prevented, zero repeats. August 9, 2026 · by the ZWISERFIT engineering team AI agents fail silently. LAO makes failures visible and fixable. On August 8, 2026, our agent orchestration system — LAO — ran a full 24-hour cycle und...

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2m read

DEV Community • 2026-08-09 18:10

Your Service Map Is Lying

You attach the OpenTelemetry Java agent, point it at a collector, and within minutes Grafana is drawing a service map you never drew. A box for each service, arrows between them, latency on every edge. It feels like magic, and — more dangerously — it feels complete. "The agent traces everything" is the sentence repeated in every onboarding doc. This is the story of the moment that sentence stoppe...

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6m read

DEV Community • 2026-08-09 18:07

Why a 24 GB GPU Does Not Give Your Local LLM 24 GB

I keep seeing the same local LLM sizing mistake: "The model file is smaller than my GPU, so it should fit." That is only the first check. A 24 GB GPU does not give your model a clean 24 GB memory budget. The display stack, runtime, temporary buffers, model weights, and KV cache all compete for the same space. Here is the worksheet I use before I download a model or rent a GPU. 1. Star...

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4m read

DEV Community • 2026-08-09 18:02

Technical Documentation Template: Build Product Docs With a Tested Structure

Originally published at https://ninadpathak.com/articles/technical-documentation-template/. Creating documentation often forces several decisions at once: where readers begin, how they complete the first task, where exact details belong, and how they recover when a step fails. A template reduces that first pass to a structure you can inspect and adapt. I built this template to solve a narrow p...

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6m read

DEV Community • 2026-08-09 18:00

Beyond the Black Box: Reclaiming Developer Agency in an Era of AI-Assisted Coding

Originally published on tamiz.pro. The promise of AI-assisted coding is seductive: velocity, reduced boilerplate, and the elimination of context-switching fatigue. Tools like GitHub Copilot, Cursor, and various IDE plugins have transitioned from novelty to necessity in many modern codebases. However, a subtle but dangerous drift is occurring in our development practices. We are witnessing a shift...

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7m read

DEV Community • 2026-08-09 18:00

A backup you haven't restored isn't a backup

Migrating from MongoDB Atlas to a self-hosted replica set bought us control and cut our bill. It also quietly removed something we had stopped thinking about: Atlas had been taking continuous backups for us the entire time. After the migration, production data for Prochesta lived in /var/db/mongo on a single VPS. No snapshots. No off-box copy. A rm -rf, a bad migration script, or a dead disk woul...

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12m read

DEV Community • 2026-08-09 17:55

ChronicleOps: Autonomous Chaos Engineering & Self-Healing Telemetry Engine published

What I Built ChronicleOps is an autonomous cloud chaos engineering, real-time observability, and self-healing platform built natively on Zerops. Instead of manually troubleshooting downtime, ChronicleOps lets developers spin up target application stacks, inject controlled fault vectors (such as process kills or container crashes), observe real-time telemetry degradation, and let the sy...

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3m read

DEV Community • 2026-08-09 17:54

How I found a 32x performance bug hiding in a UTF-8 decoder

Last week I was profiling a Node.js service that processes large JSON-RPC responses. Three concurrent 18.7 MB responses crashed the process with an out-of-memory error — on a machine with 1 GB of heap. The culprit wasn't the JSON parser. It was the UTF-8 decoder that ran before JSON.parse ever saw the data. The setup The service fetches binary response bodies as Uint8Array and convert...

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3m read

DEV Community • 2026-08-09 17:54

Pull Requests, Code Reviews & Git Rebase

If you've already learned Git commits, branching, and merging, you've mastered the mechanics of version control. But knowing Git alone doesn't make you effective on a real engineering team. In this article, we'll cover: What Pull Requests (PRs) actually are How professional code reviews work Why .gitignore is essential The dangers of committing secrets When to use git merge vs git rebase The...

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5m read

AI Can Write the Code. You Still Have to Design the System.

DEV Community • 2026-08-09 17:54

AI Can Write the Code. You Still Have to Design the System.

The foundation of your application is everything, especially when you use agents to write your code. Everyone talks about garbage in/garbage out with AI and machine learning, but no one really talks about what that means when you hand an LLM an entire codebase and tell it to start building. LLMs are basically just billion dollar pattern matching black boxes. If you give them a well-understood sta...

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11m read

DEV Community • 2026-08-09 17:52

AI Engineering #02 — Chunk-First, Chunk-Native: The Unit of Work Is a Data-Model Decision, Not a Prompt-Time Patch

Previous: #01 — When an AI Discards Its Own Search Results This is a post-mortem on my own system, not someone else's. And here's the uncomfortable part: I knew the books could be enormous — it was written into the project's own goals, in black and white, before a line of code. I just didn't treat that knowledge as a design constraint. I filed it under "handle it later," built for the common cas...

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38m read