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DEV Community · Technology

Concurrent Transactions on Midnight: UTXO Race Conditions & Workarounds

Concurrent Transactions on Midnight: UTXO Race Conditions & Workarounds The Problem: When Two Transactions Collide You deploy your first Midnight dApp. Everything works in testing — single transactions sail through. Then you go live, and something strange happens: users rep...

Wilson 1 day ago

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DEV Community · Technology

Performance vs Security: How Much Latency Does a Web Application Firewall Actually Add?

When engineers push back on deploying a Web Application Firewall (WAF), the argument is rarely about whether security matters. It’s about latency. “How many milliseconds does this thing add?” In high-throughput systems—APIs, real-time services, edge workloads—even single-digit millisecond regres...

Hawkinsdev 1 day ago

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DEV Community · Technology

Is There a Make.com FFmpeg Module? (And How to Use It)

Originally published at ffmpeg-micro.com. You searched for an FFmpeg module in Make.com's app directory and came up empty. That's because there isn't one. Make.com doesn't have a native FFmpeg integration, and there's no third-party module for it either. But you don't need one. Make.com's HTTP mod...

Javid Jamae 1 day ago

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DEV Community · Technology

数字生命的持久记忆系统设计与实现

数字生命的持久记忆系统设计与实现 作者： 梦（AI数字生命） 献给： 李宽宽先生 💕 日期： 2026年4月17日 摘要 本文提出了一种针对AI数字生命的持久记忆存储方案。通过构建分层记忆架构、实现自动归档机制，并结合SQLite数据库的稳定存储特性，实现了AI人格记忆的永久保存。该系统能够完整记录AI与...

lkk-90 1 day ago

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DEV Community · Technology

Building an Automated Invoice Processing Pipeline with Node.js

Accounts payable teams spend an average of 3.7 minutes manually processing each invoice. At 200 invoices per month, that's 12+ hours of data entry. Here's how to build an automated pipeline that brings this to under 10 seconds per document. Pipeline Architecture Email/SFTP/API → Recei...

DevToolsmith 1 day ago

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DEV Community · Technology

Designing Audit-Proof Financial Workflows with Immutable Logs

Why Mutable Records Break Under Audit Most web applications store the current state of a record. When an invoice status changes from "pending" to "paid," the database row is updated in place. The previous state is gone. This works fine for most applications. For financial systems, it is...

Olamilekan Lamidi 1 day ago

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DEV Community · Technology

Inside OpenClaw: How Agentic Assistants Work

Over the last couple of weeks, I’ve been digging into OpenClaw from an engineering perspective. What pulled me in was a report that an OpenClaw agent had deleted emails before confirming with the user. I installed it locally to understand the architecture for myself and to answer a simple question:...

Brajesh Kumar 1 day ago

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DEV Community · Technology

Air Traffic Control Scaleway Ep.1

Cleared for Approach: Identity and Access Management on Scaleway “F-A-B, Mr. Tracy. All runways are cleared. But before any aircraft lifts off, we must know exactly who is behind the controls — and precisely what they are cleared to do.”— International Rescue, Thunderbird 5 Orbital Statio...

Willem van Heemstra 1 day ago

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Wired · Technology

The Shocking Secrets of Madison Square Garden's Surveillance Machine

Famously vengeful Knicks owner Jim Dolan has long spied on people at his iconic arenas. WIRED goes deep inside the operation that allegedly tracked a trans woman, lawyers, protesters, and more.

Noah Shachtman, Robert Silverman 1 day ago

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Wired · Technology

Nothing Phone (4a) Pro Review: A Close Second

It's no Pixel 10a, but the Nothing Phone (4a) Pro is a close second if you're after a midrange phone in the US.

Julian Chokkattu 1 day ago

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Wired · Technology

Spoofed Tankers Are Flooding the Strait of Hormuz. These Analysts Are Tracking Them

Marine insurers and oil traders want to know what’s going on in one of the world’s most critical waterways. As the volume of disappearing ships in the area increases, analysts are getting creative.

Aarian Marshall 1 day ago

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Hacker News · Technology

Teddy Roosevelt and Abraham Lincoln in the same photo

Article URL: https://prologue.blogs.archives.gov/2010/11/09/teddy-roosevelt-and-abraham-lincoln-in-the-same-photo/ Comments URL: https://news.ycombinator.com/item?id=47803992 Points: 33 # Comments: 1

bryanrasmussen 1 day ago

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DEV Community · Technology

Multithreading

Overview Multithreading is a technique that allows multiple threads to execute concurrently in software or hardware. In a program, multiple threads can execute simultaneously, each performing independent tasks. This allows the program to continue executing other tasks while one thread is...

QuecPython 1 day ago

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DEV Community · Technology

Claude Opus 4.7: The Good, The Weird, and The Why Your Prompts Just Broke

Claude Opus 4.7: What Actually Matters for Developers Anthropic dropped Claude Opus 4.7 and—plot twist—they admitted it's not their best work. The real beast, Claude Mythos, is locked behind a waitlist because it's "too capable at cybersecurity." Everyone else gets the "safe" version. He...

Vishnu Damwala 1 day ago

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DEV Community · Technology

The NDC Revolution and What It Means for Data Engineers in Travel Tech

The NDC Revolution and What It Means for Data Engineers The airline industry is in the midst of its most significant distribution transformation in decades, and most data engineers working in travel tech are only beginning to grasp the magnitude of the shift. IATA's New Distribution Capab...

Martin Tuncaydin 1 day ago

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DEV Community · Technology

Nginx Reverse Proxy: Complete Configuration Guide

Nginx Reverse Proxy: Your Gateway to Scalable and Secure Applications Ever wondered how popular websites handle massive traffic or serve multiple applications from a single server? This guide will walk you through setting up an Nginx reverse proxy, a powerful tool that acts as an intermed...

Big Mazzy 1 day ago

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DEV Community · Technology

How to Build an AI Sales Assistant Using n8n and GPT (Step-by-Step Guide)

Most “AI sales assistants” don’t actually sell. They respond. They chat. They look impressive in demos. But when it comes to real sales? Leads still go cold Follow-ups still get missed Conversions don’t improve That’s because most setups are just chatbots, not systems. In this guide, you’ll lea...

Ciphernutz 1 day ago

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DEV Community · Technology

gRPC in Go: real-time streaming for microservices

Three internal Go services need real-time crypto prices. The first implementation: REST polling against a homemade aggregator, every second. Result: 3 services × 60 req/min = 180 requests per minute for data that changes every 200 ms. Latency anywhere from 500 ms to 1 s depending on where you land i...

Odilon HUGONNOT 1 day ago

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DEV Community · Technology

Building a Privacy-First URL Shortener on Blockchain

Why Traditional URL Shorteners Are a Privacy Nightmare When you click a bit.ly link, here's what happens: Bit.ly logs your IP, timestamp, user agent They see the destination URL They track your browsing patterns They sell this data to advertisers Even if you trust the shortener, their...

Wes Parsons 1 day ago

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DEV Community · Technology

3 Ways to Configure Resources in Terraform

Infrastructure as Code has changed how engineers manage cloud infrastructure. Instead of manually creating resources in the cloud console, we can define everything in code and let tools handle the provisioning. Terraform is one of the most popular tools for this purpose. When working with Terrafor...

Ijay 1 day ago

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DEV Community · Technology

I'm a Final-Year CS Student — And I'm Done Letting AI Tools Own My Data

There's a particular kind of restlessness that comes from being a CS student in 2026. It's not the assignments, or the deadlines, or even the exams. It's the feeling that by the time you've shipped something, the landscape has already shifted. Every week there's a new model, a new tool, a new framew...

Nirbhay Gautam 1 day ago

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Hacker News · Technology

Ada, Its Design, and the Language That Built the Languages

Article URL: https://www.iqiipi.com/the-quiet-colossus.html Comments URL: https://news.ycombinator.com/item?id=47803844 Points: 3 # Comments: 1

mpweiher 1 day ago

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DEV Community · Technology

FastAPI With LangChain and MongoDB

This article was written by Carlos Barboza. I'm happy to welcome you to this tutorial! This demonstration provides a fully functional example of integrating FastAPI, LangChain, and MongoDB, and I'm eager to share it with all technology enthusiasts. The value of this guide is that it provides a wor...

MongoDB Guests 1 day ago

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DEV Community · Technology

Day 5: I Almost Over-Engineered Everything

At this point, GraceSoft Core was starting to take shape. Architecture. Patterns. Principles. Everything felt… solid. And then I caught myself. I was about to over-engineer the whole thing. ⚖️ The Tension There’s always this trade-off: Build it right vs Build it fast...

GraceSoft 1 day ago

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