Designing a Real-Time Trading Desk Pricing Engine
HackerNoon • 2026-04-20 10:13

Designing a Real-Time Trading Desk Pricing Engine

Pricing engines don’t fail because of bad models—they fail because of weak infrastructure. This guide shows how to build a resilient, low-latency system using Redis Streams for ingestion, a guarded ML microservice for pricing, and Redis cache for fast delivery. It also covers handling market spikes with circuit breakers and safely rolling out new models using shadow mode—so your system stays accur...

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1m read
Setting Up a Next.js Micro Frontend Host App: Complete Guide
DEV Community • 2026-04-20 10:12

Setting Up a Next.js Micro Frontend Host App: Complete Guide

Your Next.js Module Federation setup builds fine. Remotes appear to load. Components render blank. No errors. No stack trace. Nothing. # Missing from your package.json: "dev": "cross-env NEXT_PRIVATE_LOCAL_WEBPACK=true next dev -p 5000" Without that flag, Next.js uses its internal bundled webpack instead of the locally installed webpack 5. The Module Federation plugin needs access to web...

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1m read
Azure CLI: Setup Linux VM, VNet, Storage & Key Vault with Budget Alerts—A Comprehensive Step-by-Step Infrastructure Guide.
DEV Community • 2026-04-20 10:10

Azure CLI: Setup Linux VM, VNet, Storage & Key Vault with Budget Alerts—A Comprehensive Step-by-Step Infrastructure Guide.

Introduction Cloud computing has revolutionized how developers and IT professionals build, deploy, and manage applications. Among the leading platforms, Microsoft Azure stands out for its flexibility, scalability, and powerful infrastructure services. Whether you’re experimenting with Linux environments, hosting applications, or designing complex network architectures, Azure provides th...

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10m read
DEV Community • 2026-04-20 10:09

The 7 Steps We Follow to Ship Production-Ready FlutterFlow Apps

Most "FlutterFlow tutorials" stop at the demo stage. This is what the production process actually looks like after 100+ shipped apps. Step 1: Architecture planning (3-5 days) [condensed content...] Step 2: UI with production standards [condensed content...] ... Want the full checklist? I expanded this into a 30-item production-readiness checklist covering secur...

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1m read
DEV Community • 2026-04-20 10:09

Protecting Your macOS: How to Find Exactly Which IPs Are Trying to Attack Your System (And Stop Them)

Protecting Your macOS: How to Find Exactly Which IPs Are Trying to Attack Your System (And Stop Them) As developers, remote workers, and tech enthusiasts, many of us rely on macOS for its sleek design, robust performance, and security features. But as secure as macOS is, it’s not immune to attacks. Whether you’re working from a coffee shop, running a home server, or managing an enterpri...

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8m read
Product Hunt — The best new products, every day • 2026-04-20 10:06

STRIKE

The habit app that doesn't forgive you Discussion | Link

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1m read
Hacker News: Front Page • 2026-04-20 10:04

M 7.4 earthquake – 100 km ENE of Miyako, Japan

Article URL: https://earthquake.usgs.gov/earthquakes/eventpage/us6000sri7/ Comments URL: https://news.ycombinator.com/item?id=47832248 Points: 12 # Comments: 0

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1m read
Hacker News: Front Page • 2026-04-20 10:00

NSA is using Anthropic's Mythos despite blacklist

Article URL: https://www.reuters.com/business/us-security-agency-is-using-anthropics-mythos-despite-blacklist-axios-reports-2026-04-19/ Comments URL: https://news.ycombinator.com/item?id=47832222 Points: 8 # Comments: 1

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1m read
Hacker News: Front Page • 2026-04-20 10:00

NSA is using Anthropic's Mythos despite blacklist

Article URL: https://www.axios.com/2026/04/19/nsa-anthropic-mythos-pentagon Comments URL: https://news.ycombinator.com/item?id=47832222 Points: 164 # Comments: 124

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1m read
DEV Community • 2026-04-20 10:00

150+ regex patterns for Python developers: stop rebuilding the same wheel

Every Python developer I know has a folder somewhere called "regex_snippets" or "useful_patterns" or "patterns_to_remember.txt". Mine grew to 47 files over six years. Half of them were wrong. Three of them were the same URL pattern, each slightly different. The problem with regex isn't that it's hard to write. It's that it's hard to remember. The syntax is compact enough that you forget it betwee...

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5m read
DEV Community • 2026-04-20 10:00

PostgreSQL BRIN Indexes: When & How to Use Block Range Indexes

PostgreSQL BRIN Indexes: When & How to Use Block Range Indexes You have a 500-million-row events table. The B-tree index on created_at consumes 12 GB. Every insert must update that 12 GB index. Backups include 12 GB of index data. The buffer cache is full of index pages. And all you ever do is range queries: "give me events from last week." There's a better way. A BRIN index on the ...

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4m read
DEV Community • 2026-04-20 10:00

The Hidden Cost of AI Coding Agents: Every Tool Is Fetching the Same Data

Claude Code, Cursor, Copilot, Aider, Continue, Windsurf. Before any of them suggests npm install express, they hit the npm registry. Before they suggest pip install django, they hit PyPI. Before they warn about vulnerabilities, they hit OSV. Millions of agents. The same queries. Over and over. Something is wrong with this picture. The Math of Waste Let's do some napkin math. Claude C...

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6m read
DEV Community • 2026-04-20 09:51

OpenClaw Plugins — Ecosystem Guide and Practical Picks

This article is about OpenClaw plugins — native gateway packages that add channels, model providers, tools, speech, memory, media, web search, and other runtime surfaces. The rest of the piece covers discovery, packaging, CLI lifecycle, maturity, security, and concrete plugin picks. OpenClaw skills matter for navigation and safety because ClawHub and announcement text often say "skills" when the...

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16m read
DEV Community • 2026-04-20 09:51

OpenClaw Skills Ecosystem and Practical Production Picks

OpenClaw has two extension stories, and they are easy to mix up. Plugins extend the runtime. Skills extend the agent's behavior. That distinction matters. A plugin adds a new capability surface such as a channel, provider, or tool integration. A skill is usually lighter. It teaches the agent how and when to use existing tools, binaries, APIs, or workflows. In practice, that makes skills the fast...

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13m read
DEV Community • 2026-04-20 09:51

OpenClaw Production Setup Patterns with Plugins and Skills

OpenClaw looks simple in demos. In production, it becomes a system. The real complexity is not in prompts or models. It is in how plugins and skills interact to manage state, integrate systems, and execute workflows over time. A useful mental model: Plugins = capabilities APIs, memory, tools, integrations Skills = behavior How the agent uses those capabilities in structured ways Production s...

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19m read
What is Appium? Full Tutorial + Modern Alternatives
DEV Community • 2026-04-20 09:51

What is Appium? Full Tutorial + Modern Alternatives

73% of mobile engineering teams say test maintenance not test creation is their biggest QA bottleneck. The tool most of them are using? Appium. And while it's been the industry standard for a decade, the landscape has shifted dramatically. In this guide, we'll break down everything you need to know about Appium: what it is, how it works, how to set it up, and where it falls short. Then we'll wa...

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18m read
DEV Community • 2026-04-20 09:50

Hermes AI Assistant Skills for Real Production Setups

Hermes AI assistant, officially documented as Hermes Agent, is not positioned as a simple chat wrapper. For installation, provider setup, tool sandboxing, and gateway configuration, see the Hermes AI Assistant guide. This article focuses on the skills and profile architecture that determines how Hermes behaves once it is running. The official docs and repository describe a self-improving agent w...

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12m read
What DevOps Really Means (and Why It’s So Hard to Explain)
DEV Community • 2026-04-20 09:49

What DevOps Really Means (and Why It’s So Hard to Explain)

You know how people still, even now, don’t really know what DevOps is? Honestly, even most DevOps engineers struggle to explain what they actually do. So, to make life easier, we just say “we’re software engineers”. I do it too it’s funny, really. We are software engineers, sure, but saying “DevOps engineer” opens the door to a conversation I’m never ready for. I already stress enough trying to...

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4m read
I Tested 6 AI Translators on a 40-Page Research Paper — Only One Actually Worked
DEV Community • 2026-04-20 09:48

I Tested 6 AI Translators on a 40-Page Research Paper — Only One Actually Worked

I tried a simple experiment: Take a 40-page academic paper and translate it using AI tools — free tier only. What I expected: ● Some limits ● Maybe slower processing ● Possibly lower quality What actually happened: ● Some tools returned only the first two paragraphs ● No error messages ● No warnings ● Just… silent truncation That’s when it became clear: Most “AI document translators” are not bu...

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6m read
HackerNoon • 2026-04-20 09:48

Why Obsidian, Notion, and Miro Didn’t Work for Me

I tried Obsidian, Notion, and Miro, but each left a gap between storing ideas and actually shaping them. SchemaDive felt more aligned with how I think.

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1m read
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