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ProgrammingDEV Community ·

Part 6: Building it with MuleSoft Vibes: skills, rules, workflows and hooks

Part 6 of 10 · Building an Agentic Change-Approval MVP on MuleSoft Parts 4 and 5 covered what the integration team builds: MCP tool flows with strict contracts, behind a governed gateway. This part covers how they build it. We used MuleSoft Vibes in Anypoint Code Builder, and the interesting part wasn't the code it wrote. It was how we taught it our standards so every tool came out the same way. Vibes gives you three building blocks, and each one solves a different problem: What it is When it applies What we used it for Rules Natural-language constraints Every message (global or workspace) Sta

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ProgrammingDEV Community ·

Fallos de seguridad de agentes locales de MCP: riesgo en el código

Los fallos de seguridad de MCP y los agentes locales chocan de frente cuando dos procesos automatizados intentan manipular el mismo entorno de trabajo sin barreras de aislamiento. El protocolo diseñado para unificar la conexión entre modelos de lenguaje y herramientas locales prometía eliminar las integraciones fragmentadas. Sin embargo, la realidad técnica muestra fisuras severas: fugas silenciosas de tokens en memoria volátil. También se producen sobrescrituras destructivas en repositorios activos cuando varios asistentes operan en paralelo. Quien confía en la ejecución directa de comandos d

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ProgrammingDEV Community ·

Geofencing without the Battery Drain: Lessons from Muffle

Opening hook It happened during a quiet afternoon at the community center. I was sitting in the back row, waiting for the session to begin, when my phone decided to belt out an aggressive notification sound at maximum volume. Everyone turned around. The silence of the room amplified the interruption, making me feel like the most inconsiderate person in the building. I scrambled to silence the device, but the damage was done.

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ProgrammingDEV Community ·

Your Proxy Hides Your IP. What About DNS, ECS, and WebRTC?

If a website shows your proxy's IP address, that does not mean every network request goes through it. The page may load through one exit, DNS may use your home connection, and WebRTC may connect over a third route. Hello! Today we'll look at what DNS can reveal, why the exit provider's own DNS matters, how WebRTC name resolution can leak separately, and what to configure in BlankTrail Proxy to bring these routes together. We'll also explain why BlankTrail uses its own database of ISP DNS servers that serve only customers of their respective networks.

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ProgrammingDEV Community ·

Pods Deployments ReplicaSets StatefulSets Storage Troubleshooting

🚀 JumpToTech Kubernetes Core Hands-On Lab Objective By the end of this lab, you should understand: Control Plane Worker Nodes Pods Containers Deployment ReplicaSet Self-healing Scaling Labels and selectors StatefulSet Stable Pod identity PersistentVolume (PV) PersistentVolumeClaim (PVC) StorageClass Basic Kubernetes troubleshooting Before creating anything, check the cluster. Run: kubectl cluster-info Then: kubectl get nodes Now: kubectl get nodes -o wide What are these nodes? Nodes are machines participating in the Kubernetes cluster. Application workloads normally run on Worker Nodes. A sim

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ProgrammingDEV Community ·

Build a Tiny Virtual Pet on Arduino in 60 Minutes 🐾

What if your first hardware project wasn't another blinking LED, but a tiny pet that gets hungry, plays with you, falls asleep, and reacts to what you type? Meet Kiku. 🌸 Kiku is the mascot and in-house pet of Her AI Studio, a community program helping the next generation of women learn and build with AI. In this mini workshop, we're shrinking Kiku down until the entire pet can live on an Arduino Uno Q. Full tutorial is available in the Her AI Studio curriculum What you need: an Arduino Uno Q a USB cable your laptop Arduino App Lab about 60 minutes Tip!

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ProgrammingDEV Community ·

What Comes After Zero to One? Building Architectures for Possibility?

Peter Thiel's Zero to One asks a powerful question: What can we build that does not yet exist? But there is a question one level deeper: What architectures determine what can exist in the first place? This question is where I started developing Onturgy. GitHub repository: https://github.com/modarresi1913/Onturgy Paper: https://philpapers.org/rec/ALHPYC From building things to building possibility Software engineers already understand something philosophers often discuss only abstractly: Architecture creates constraints. An API determines what can be called.

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ProgrammingDEV Community ·

The OSMF Visibility Gap: Your License Scanner Can’t See the Fee

Pennyforge studio — zero-cost audit, all sources fetched 2026-10-05/06, reproduction at the bottom. The Open Source Maintenance Fee (opensourcemaintenancefee.org, creator Rob Mensching) is a funding model in which a project's source code stays under its existing OSI license while a small fee attaches to the official binary releases (published packages). It is explicitly not a license fee. Its first real adoption wave is dated June–September 2026: Project Announcement Fee terms (verified primary) Excelsior (Papyrine / Simon Cropp, .NET Excel library) GitHub issue #234, opened 2026-06-06 (milest

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ProgrammingDEV Community ·

Node.js Backend API Feature Flags Govern Nightly Parser Percentage Rollout

Put the new structured-log parser behind server-owned Node.js feature flags, let the backend API assign players to a stable percentage rollout, and promote the parser only when search signal improves without exhausting the pipeline's error budget. The percentage is merely an exposure control; the release decision belongs to the quality evidence from a complete nightly run. TL;DR: keep flag administration on the backend, return only an evaluated value to the application, and let the frontend poll that narrow application endpoint. A basic flags API is enough for this job when polling latency is

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ProgrammingDEV Community ·

Comparing Prometheus Pull and Push API Custom Metrics for Small SaaS Node.js

Short answer: start with a push-style metrics API when a small Node.js team needs to judge a flagged property-pricing rule from a few application-level signals. Choose Prometheus plus Grafana when scrape-based infrastructure coverage, Kubernetes integrations, or sophisticated querying matter more than setup weight. The deciding variable is signal quality versus noise, not dashboard polish. For a solo founder, Infrai's native surface also exposes consistent per-call cost, vendor, and latency metadata. Those fields make the monitoring path's own overhead visible while the pricing experiment runs

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ProgrammingDEV Community ·

Parse a TikTok Profile URL Without Keeping Tracking Parameters

People paste profile links from chats, browsers, and share sheets. Those links can carry query parameters that are irrelevant to identifying the account. A small parser should extract a handle from the profile path, reject unrelated hosts, and leave the original URL out of the lookup key. I built TikStories to accept a public TikTok handle or profile URL and show currently active public Stories. The example below is a standalone parsing exercise, not a copy of the site's internal code.

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ProgrammingDEV Community ·

Go Web Frameworks in 2026: net/http, chi, Gin, Echo, Fiber Compared

Go ships a production-capable HTTP server in its standard library, and since Go 1.22 the built-in router handles method matching and path parameters on its own. The framework question has narrowed, not disappeared. Five stacks cover almost every Go backend decision in 2026: the standard library's net/http, chi, Gin, Echo, and Fiber. Each takes a different position on the same tradeoff — what the library gives you versus what you owe it in dependencies, conventions, and ecosystem compatibility. This article compares them on routing power, handler ergonomics, middleware, and measured performance

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ProgrammingDEV Community ·

I Built My Developer Portfolio to Feel Like an Experience, Not a Resume

I recently finished building and deploying my personal developer portfolio. A strong interactive landing experience A custom 3D hero Smooth motion and transitions An interactive project archive Responsive design across desktop and mobile Performance and graceful fallbacks for 3D/WebGL A dedicated resume and contact experience SEO and production deployment The portfolio is built with Next.js / React, with Three.js-based 3D elements and custom interactions. I’m still learning Java, DSA, Spring Boot, and backend development, and I’m now starting to spend more time contributing to open source as w

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ProgrammingDEV Community ·

AI scheduling assistants: what they actually automate in 2026

An AI scheduling assistant is not a better booking link. A booking link publishes the gaps in your calendar; an AI scheduler decides what those gaps should be. It moves your tasks around your meetings, defends the hours you need to actually deliver work, and rearranges the week when a client pushes a call. That distinction is the whole category — and it's why freelancers who try one expecting "Calendly with AI" usually abandon it in a fortnight. This guide explains what these tools genuinely automate in 2026, what they still get wrong, how they differ from ordinary scheduling software, and how

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