DEV Community • 2026-07-29 23:36

El Despertar de NERA como infraestructura: Por qué el Negrooverso es más una necesidad técnica que un sueño

Hemos crecido buscando nuestras raíces en enciclopedias que no hablaban nuestro idioma emocional ni han conectado con el fondo de lo que somos. Para muchxs, la primera ventana al mundo digital fue esa "Mi Primera Encarta" de los noventa, un ecosistema que prometía saber universal pero guardaba una ausencia sistemática. Nosotros no estábamos ahí, conocimiento genérico en áreas sociales, biología y ...

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Hacker News: Front Page • 2026-07-29 23:18

The Productivity Mirage

Article URL: https://frantic.im/mirage/ Comments URL: https://news.ycombinator.com/item?id=49104335 Points: 8 # Comments: 0

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DEV Community • 2026-07-29 23:13

LLM TRADER BOT

Let me tell you a story about failure. Late 2024. I'm sitting in my Wrocław apartment after an 8-hour warehouse shift. My back hurts. I've been trying to make a trading bot work for two weeks. Every night, same result: the LLM generates beautiful-sounding analysis. Confident. Articulate. Completely wrong. "RSI is 28, oversold. BUY." Next morning: -4.2%. The problem wasn't the LLM being stupi...

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DEV Community • 2026-07-29 23:10

Your AI Subagents Are Lying to You: 4 Silent Failure Modes

I fanned a design-token sweep out to parallel Claude Code subagents: roughly 317 hardcoded hex colors scattered across an app's screens and components, all to be replaced with tokens from a central theme file. Each agent got a slice of files and reported back when done. The reports came in clean. The grep afterward disagreed. Some slices were untouched, and the agents responsible had said nothing,...

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DEV Community • 2026-07-29 23:08

How to write technical posts that survive AI noise

There is a new kind of content pollution on the internet. It is clean looking. It is fast. It is confident. It is usually correct in the same way instant noodles are usually a meal. You have seen it. Twenty posts explaining distributed systems with suspiciously identical examples. Thirty threads about performance that all end with the same advice about caching. A flood of technical content that...

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DEV Community • 2026-07-29 23:08

DSA | Random Generator | Can you come up with a solution?

Hi, I may post some DSA / interview questions I find interesting (even if you would be unlikely to see it in an interview) from some of the books I own / codeforces / leetcode etc. This question comes from Elements of Programming Interviews in Java written by Lee, Aziz, and Prakash. 4.10 Generate Random Uniform Numbers How would you implement a random number generator that generates a random in...

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DEV Community • 2026-07-29 23:06

Best SBCs Under $100: Real Price Data for 2026

I run ChipRadar, a real-time price tracker for single-board computers. We monitor 55+ boards across 5+ vendors and update prices every 6 hours. Here's what the data says about the best SBCs under $100 right now. 🏆 The Rankings (Current Prices) These are live prices captured from Amazon and other vendors as of this week: 🥇 Raspberry Pi 5 4GB — $57 The undisputed king of ecos...

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DEV Community • 2026-07-29 23:06

Home Cantina: A Modern Glassmorphism Comfort Food Landing Page

This is a submission for Frontend Challenge - Comfort Food Edition, Perfect Landing What I Built For this challenge, I created "Cantina de Casa", a landing page focused on classic home-cooked comfort food dishes. When I started building this page, the idea wasn't to create something overly complex, but rather to leverage concepts that make navigation organized and intuitive, with a cle...

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DEV Community • 2026-07-29 23:04

🧵 ThreadLocal no Java 21 – o que mudou, o que continua e quando você deve (ou não) usar

E aí, dev que já passou horas debugando um ThreadLocal que não foi limpo e vazou memória? Pois é. Esse velho conhecido do Java 1.2 sempre foi a solução para guardar dados "por thread" como o userId de uma requisição, ou uma conexão de banco que não pode ser compartilhada. Mas aí chegaram as Virtual Threads no JDK 21, e o jogo mudou. Criar milhões de threads leves virou realidade, e o bom e velho ...

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DEV Community • 2026-07-29 23:04

A little about myself

I'm Meshack Amadi — a Data Scientist & Junior Software Developer passionate about data, backend development, Web development and continuous learning. 🛠️ What I'm Working On 🐍 Python (Pandas to Polars Conversion) 🗄️ SQL (query optimization) 📊 Data Visualization (Streamlit, Power BI) Currently building a Scalable Website that pulls from multiple sources and visualizes key trend...

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DEV Community • 2026-07-29 23:02

Understanding the N+1 Problem in GraphQL (and Why It’s Not Just GraphQL)

TL;DR The N+1 problem is a general data-access anti-pattern that can appear in REST, resolver-based GraphQL, and federated GraphQL at different layers of the stack. WunderGraph’s breadth-first loading approach can help batch cross-subgraph work at the router layer, but it does not remove the need for batching inside subgraphs. Even when the router batches entity references, a subgraph c...

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DEV Community • 2026-07-29 23:01

Four ways prediction-market "arbitrage" numbers lie

I spent a few months capturing and auditing order-book and oracle data from prediction markets (Polymarket, Kalshi) for my own research. I went in wanting to find cross-venue arbitrage. What I mostly found was that my own numbers were wrong, four times, for four boring reasons. Every one of those mistakes produces a confident, impressive, completely useless result. If you are building anything ag...

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Hacker News: Front Page • 2026-07-29 22:53

Man and the Computer by John G. Kemeny (1972 book by the co-creator of BASIC)

Article URL: https://archive.org/details/mancomputerbyjoh0000john Comments URL: https://news.ycombinator.com/item?id=49104140 Points: 5 # Comments: 1

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DEV Community • 2026-07-29 22:52

I Built an ESP32 Gateway for My Victron Solar Setup — No App Needed

If you've ever used Victron Energy gear for your solar setup, you know the pain: you need the VictronConnect app, Bluetooth pairing, and you can only monitor from one device at a time. So I built Victron Remote Gateway — an ESP32-S3 gateway that gives you a live dashboard, MQTT integration, and full control from any browser. What It Does Real-time monitoring of all Victron Energy de...

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DEV Community • 2026-07-29 22:51

ESP32 Gateway for Victron Solar — No App Needed, Fully Self-Hosted

If you've ever used Victron Energy gear for your solar setup, you know the pain: you need the VictronConnect app, Bluetooth pairing, and you can only monitor from one device at a time. So I built Victron Remote Gateway — an ESP32-S3 gateway that gives you a live dashboard, MQTT integration, and full control from any browser. What It Does Real-time monitoring of all Victron Energy de...

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Hacker News: Front Page • 2026-07-29 22:51

LLM Honeypot

Article URL: https://llm2human.pages.dev/ Comments URL: https://news.ycombinator.com/item?id=49104117 Points: 7 # Comments: 2

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𝚓𝚊𝚟𝚊𝚜𝚌𝚛𝚒𝚙𝚝 • 2026-07-29 22:49

Are real people starting GitHub repos?

Serious question. I keep seeing AI skill libraries hit 50k stars in three days. Three days. That’s not organic. That’s not even physically possible, there aren’t 50k people who evaluated your prompt collection over a long weekend. Meanwhile I’ve got a Bulma React component library. Nine stars. Eighteen months. Still shipping releases, still writing docs, still fixing bugs at 11pm like a chump, qui...

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DEV Community • 2026-07-29 22:49

TLS Certificate Management Without Tears

Expired certificates cause more outages than they should. Every time, the post-mortem says 'we'll monitor expiry dates.' Every time, six months later, someone forgets. Here's how to actually solve it. The two rules Rule 1: Don't manage certs manually. If a human has to remember to renew, the system is broken. Use Let's Encrypt + cert-manager (or your cloud's equivalent) and let the ma...

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Hacker News • 2026-07-29 22:43

Show HN: An AI Color Grader – Pico

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DEV Community • 2026-07-29 22:31

Streaming vs JSON: Trade-offs in AI-Powered Apps

This is a breakdown of a decision I made building LogicVisor, not a general "streaming vs JSON" guide. AI API responses aren't limited to text: some return images, audio, structured data. I only needed text, so streaming vs JSON became a real fork in the road. If I'd needed image responses too, this calculus changes entirely. Two constraints were in tension from the start: The AI evaluation nee...

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