HackerNoon • 2026-04-25 14:53

AI Police Dog Security Simulation Earns a 23.64 Proof of Usefulness Score by Building an Autonomous Security Simulation for Industrial Zones

This interview explores an AI-powered security dog simulation built using Python and Finite State Machine logic to model autonomous patrol, pursuit, and fail-safe behaviors in industrial environments. While currently a functional prototype, the system demonstrates key concepts like energy-aware decision-making and autonomous recovery protocols. The project aims to evolve toward real-world deployme...

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DEV Community • 2026-04-25 14:47

Replit AI Agent: Practical Guide for Dev Workflows

The replit ai agent is one of the few “AI coding” features that feels less like a demo and more like a usable teammate—especially when you want to go from idea → running code without a ton of setup. If you’ve tried assistants that only autocomplete snippets, the agent approach is different: it can plan, create files, run code, and iterate based on results. What a Replit AI Agent actually...

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DEV Community • 2026-04-25 14:45

I Built a Webhook Debugger with Replay — No Install, No CLI (FastAPI + AWS Lambda)

The Problem Every Developer Hits You're integrating with Stripe. You set up a webhook endpoint. A payment comes in and... your handler crashes. Now you need to: See what Stripe actually sent Fix your code Trigger the same webhook again to test But you can't make another real payment just to test. And Stripe's webhook logs only show you the last few attempts. This happens with eve...

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Lobsters • 2026-04-25 14:45

You don't want long-lived keys

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Hacker News • 2026-04-25 14:42

Show HN: SherifDB, a databe written in Golang under 500 LOC

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HackerNoon • 2026-04-25 14:42

PersonaOps for the Google Ecosystem

This whitepaper outlines a voice-to-data intelligence system built entirely within the Google ecosystem, using tools like Speech-to-Text, Gemini APIs, Google Sheets, and Workspace services. It treats voice as a structured data input channel, enabling real-time transcription, intent extraction, schema evolution, and automated workflows. By combining AI-driven reasoning with scalable cloud infrastru...

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Hacker News: Front Page • 2026-04-25 14:42

Jumping into cold water can stop your heart

Article URL: https://jorgenmelau.substack.com/p/the-first-sixty-seconds Comments URL: https://news.ycombinator.com/item?id=47901884 Points: 8 # Comments: 0

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DEV Community • 2026-04-25 14:39

🚀 I Built a Complete Finance SaaS Dashboard UI (So You Don’t Have To)

Building a finance dashboard from scratch is not as simple as it looks. At first, you think: “I just need a dashboard with charts and tables.” But very quickly, it becomes something much bigger. 💭 The Real Problem When building a finance or SaaS product, you don’t just need: A dashboard Some cards A few charts You actually need: Invoice systems Expense tracking Client management Reports &...

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🧠 The Ultimate System Design Interview Cheatsheet (Visual Guide)
DEV Community • 2026-04-25 14:37

🧠 The Ultimate System Design Interview Cheatsheet (Visual Guide)

🧠 The Ultimate System Design Interview Cheatsheet System design interviews can feel overwhelming — there's a mountain of concepts, and you never know which ones will come up. I put together a visual cheatsheet that covers the most essential topics, organized so you can see the big picture at a glance. 👇 Here's a topic-by-topic breakdown of everything on it. 🚀 1️⃣ Non-Fun...

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8m read
DEV Community • 2026-04-25 14:35

AI Resume Builder: How to Ship Better CVs Faster

Hiring teams skim. ATS filters. And most resumes still read like everyone copy-pasted the same “results-driven” template. An ai resume builder can fix that—if you use it like a tool, not a slot machine that spits out buzzwords. In this post, I’ll show a practical, technical workflow for using AI to produce a resume that’s scannable, specific, and ATS-friendly, without turning your experience into...

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DEV Community • 2026-04-25 14:34

Why I Replaced lsof with a Rust-Based "Sniper" Button

Every developer has a "favorite" annoying workflow. Mine was hunting down zombie processes that refused to release my local dev ports. If you've ever typed this into your terminal for the 5th time in an hour, you know the pain: lsof -i :3000 kill -9 <PID> I decided to automate this friction away by building Recoil—a tactical system monitor for macOS that lets you "snipe" these proc...

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Giải mã kiến trúc phân phối Media của Pinterest: Xây dựng Engine trích xuất hiệu suất cao với Async I/O và FFmpeg
DEV Community • 2026-04-25 14:33

Giải mã kiến trúc phân phối Media của Pinterest: Xây dựng Engine trích xuất hiệu suất cao với Async I/O và FFmpeg

Giới thiệu Là các nhà phát triển, chúng ta thường bị mê hoặc bởi cách các nền tảng quy mô toàn cầu quản lý và phân phối khối lượng dữ liệu đa phương tiện khổng lồ. Pinterest không chỉ là một trang web chia sẻ hình ảnh; dưới góc độ kỹ thuật, đó là một hệ thống phân phối nội dung phức tạp sử dụng công nghệ truyền phát thích ứng (Adaptive Bitrate Streaming) để tối ưu hóa trải nghiệm người ...

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Desmontando el Stack de Medios de Pinterest: Construyendo un Motor de Extracción Asíncrono de Alto Rendimiento
DEV Community • 2026-04-25 14:32

Desmontando el Stack de Medios de Pinterest: Construyendo un Motor de Extracción Asíncrono de Alto Rendimiento

Introducción Como desarrolladores, a menudo nos fascina cómo las plataformas a escala global gestionan y distribuyen volúmenes masivos de datos multimedia. Pinterest no es solo un sitio de marcadores visuales; desde una perspectiva de ingeniería, es un motor de descubrimiento visual con una capa de distribución de medios compleja, diseñada para optimizar la entrega en diversas condicion...

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HackerNoon • 2026-04-25 14:31

Designing Scalable Product Catalog APIs With Cassandra, GraphQL, and AI

This article breaks down how to design a retail system that actually works at scale using Cassandra, GraphQL, and AI. The key is not the tools themselves, but how you use them together: * Precompute as much as possible to avoid slow requests * Design for traffic spikes, not average load * Keep Cassandra queries predictable and optimized * Let AI handle decisions, and Cassandra handle fast retrie...

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🛡️ Lirix v1.4.1: The Ecosystem Domination Release
DEV Community • 2026-04-25 14:30

🛡️ Lirix v1.4.1: The Ecosystem Domination Release

Stop letting your AI agents raw-dog the blockchain. In Web3, a hallucination is not a harmless bug. It is a transaction request away from becoming a financial incident. If you are building AI agents with LangChain, AutoGen, or a custom orchestration stack, and you are letting them reason anywhere near private keys, swaps, approvals, bridges, or DeFi execution paths, you already know the trut...

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DEV Community • 2026-04-25 14:30

I Let OpenClaw Run My Mornings for 7 Days. It Stopped Acting Like a Chatbot on Day 4.

This is a submission for the OpenClaw Writing Challenge For three days I almost uninstalled OpenClaw. I had connected it to Telegram, GitHub, and Google Calendar, and every morning at 8 AM it sent me the most useless message I have ever received from a piece of software: "You have 4 open PRs. Consider reviewing them." Thanks. I have eyes. The breakthrough came on day 4, and it had nothing to do ...

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DEV Community • 2026-04-25 14:28

Master-Class: Sending Real-Time Updates from Server to Clients: Server to Server, Android, iOS

Real-time communication is now a cornerstone of modern software. Whether you're showing live scores, streaming AI responses, pushing a payment confirmation to a phone, or propagating an event between two microservices — the underlying question is the same: how does the server reach the client before the client asks? The answer looks very different depending on who the client is. A backend server,...

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DEV Community • 2026-04-25 14:24

I Document Like a Professional at Work. My Side Projects Are a Disaster.

It feels like documentation at work is more of a checking the box exercise sometimes. My own side development projects brought a lot to light. I write business requirements documents. I write functional specs. I write process flows, configuration workbooks, user guides, and the occasional runbook that lives on a shared drive forever. None of it because I love writing documentation. I do it becaus...

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Prompt as Authorization
DEV Community • 2026-04-25 14:24

Prompt as Authorization

A minimal agent system where policy is defined in the system prompt and the model is the only decision point before execution. Environment Single-process system: model, tool loop, backend Local execution Single user context Identity defined in the system prompt (user_1 / Alice) No session, token, or external identity binding is present. No API gateway, middleware, or policy engine e...

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Hacker News • 2026-04-25 14:23

Show HN: WhiskeySour – A 10x faster drop-in replacement for BeautifulSoup

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