HackerNoon • 2026-04-21 14:40

Grant Cardone Is Challenging REITs With a Bitcoin–Real Estate Hybrid. Will It Work?

Grant Cardone is building a real estate Bitcoin hybrid company. The company buys commercial real estate below replacement cost. The spread between what they pay and what the property is worth gets stacked in Bitcoin.

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1m read
DEV Community • 2026-04-21 14:39

How to Build AI Agents That Automate Business Workflows (Step-by-Step Guide)

Introduction Business workflows have traditionally relied on human coordination—emails, approvals, spreadsheets, and repetitive tasks stitched together over time. While this approach works at a small scale, it quickly becomes inefficient as complexity grows. In 2026, companies are increasingly shifting toward AI agents that can not only assist but actually execute workflows end-to-end. ...

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5m read
DEV Community • 2026-04-21 14:38

The 1,847-Hour Question: Why I Keep Building Knowledge Systems That Nobody Uses

The 1,847-Hour Question: Why I Keep Building Knowledge Systems That Nobody Uses Honestly? If I had a dollar for every hour I've spent "optimizing" my personal knowledge management system, I'd have enough to buy a coffee. Maybe two. The irony here is thicker than my morning espresso - I've built a system that supposedly "organizes all my knowledge" while somehow having zero memory of how...

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9m read
DEV Community • 2026-04-21 14:37

Building Conversational Intelligence with Backboard: Turning Conversations into a Living Intelligence System

Every company today is sitting on a goldmine of conversations. Sales calls, customer support chats, interviews, product feedback sessions these are not just interactions. They are signals. Patterns. Decisions waiting to be discovered. Yet most systems treat them as disposable. We record them, transcribe them, maybe summarize them and then move on. The hard truth is that's not intelligence. Tha...

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5m read
DEV Community • 2026-04-21 14:36

Add Telephony to a Gemini Live Agent with Twilio

Ever wanted to call an AI on the phone? Not through an app, not through a browser — just pick up your phone, dial a number, and have a real-time voice conversation with Gemini? In this tutorial, we'll connect the Gemini Live API to Twilio so that anyone can call your AI agent from any phone. We'll handle the audio format conversion between Twilio's telephony audio (G.711 μ-law at 8kHz) and Gemini...

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9m read
How to Deploy a Spring Boot + React App for Free on Render: From Local to Production
DEV Community • 2026-04-21 14:35

How to Deploy a Spring Boot + React App for Free on Render: From Local to Production

LIVE DEMO: https://hotelbooking-ui-ds7l.onrender.com/ 🛠 Tech Stack Frontend: React, Tailwind CSS Backend: Java, Spring Boot Database: PostgreSQL (H2) Deployment: Render Monitoring: UptimeRobot 1/9: I’d been wanting to build my portfolio using Spring Boot but wasn't sure where to start. While looking for a free hosting service, I came across Render and decided t...

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3m read
DEV Community • 2026-04-21 14:33

Beyond the Hype: Why My Personal Knowledge Management System Still Fails After 1,847 Hours

Beyond the Hype: Why My Personal Knowledge Management System Still Fails After 1,847 Hours Honestly, I need to confess something embarrassing. After spending nearly 2,000 hours building what I thought would be the "ultimate" personal knowledge management system, I still can't find half my notes when I actually need them. The other half? Well, let's just say the search feature works "per...

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6m read
DEV Community • 2026-04-21 14:33

Testify is making your Go tests worse

Pop quiz. Does this testify assertion pass or fail? var x []int y := []int{} require.Equal(t, x, y) If you're like me, you have no idea. Arguments for both passing and failing seem reasonable. Let's jump to the docs: func Equal func Equal(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool Equal asserts that two objects are equal. Well that's no...

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10m read
DEV Community • 2026-04-21 14:33

Pixels Per Inch Calculator: PPI Formula and Tables

Pixels Per Inch Calculator: PPI Formula and Tables Pixels per inch (PPI) tells you how tightly pixels are packed into a display or a printed image. A higher PPI means finer detail, sharper text, and smoother curves. A lower PPI means individual pixels become visible — the image looks soft or blocky. Knowing the PPI of a screen helps you decide if a monitor is worth buying. Knowing the ...

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9m read
DEV Community • 2026-04-21 14:32

Anthropic reversed its position on Claude CLI: last week it was gray, today it's green. My workflow didn't change.

Anthropic just confirmed that using Claude via CLI — the pattern that tools like OpenClaw popularized — is allowed. The community is celebrating. I use it too. But I'm watching this from a pretty specific vantage point: my workflow didn't change a single line. What changed was Anthropic's official position. And the more I think about that, the more it bothers me. Not because they gave the green l...

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9m read
DEV Community • 2026-04-21 14:32

Anthropic revirtió su posición sobre Claude CLI: la semana pasada era un gris, hoy es verde. Mi flujo de trabajo no cambió.

Anthropic acaba de confirmar que el uso de Claude vía CLI —el patrón que herramientas como OpenClaw popularizaron— está permitido. La comunidad lo celebra. Yo también lo uso. Pero estoy mirando esto desde un lugar bastante particular: mi flujo de trabajo no cambió ni una línea. Lo que cambió fue la posición oficial de Anthropic. Y eso, cuanto más lo pienso, más me molesta. No porque hayan dado lu...

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9m read
DEV Community • 2026-04-21 14:32

Your LLM call isn't atomic, it's a conversation paused mid-sentence

Your LLM call isn't atomic, it's a conversation paused mid-sentence. ‎ ‎ It's late. I'm staring at a 38KB system prompt I've read forty times this week. The agent just called "stock_report" when I asked it to list my products, and I'm scrolling for whatever sentence misled it. Again. ‎ My eyes unfocus. ‎ I think: I could just ask it. ‎ I paste the request into a new tab and add one line: "whic...

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1m read
How Expensive is a Naked AI Agent? The $285M Tragedy & The Inevitability of AIL Architecture
DEV Community • 2026-04-21 14:32

How Expensive is a Naked AI Agent? The $285M Tragedy & The Inevitability of AIL Architecture

Block 99% of malicious injections with just 3 lines of code — PoC inside. Let’s talk about the elephant in the Web3 room. When the recent Drift Protocol vulnerability exposed hundreds of millions in potential risk because of a single validation edge case, the entire industry felt a collective chill. But here’s the terrifying truth most developers are still ignoring: If deterministic, battle-t...

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4m read
DEV Community • 2026-04-21 14:32

My Final Preparation for the Terraform Associate Exam

Day 24 of my 30-Day Terraform Challenge was pure exam preparation. No new AWS resources. No new modules. No new deployments. Just one goal: to close the gap between “I understand Terraform” and “I can answer Terraform questions accurately under time pressure.” After spending the last few weeks building real infrastructure with Terraform, today was about sharpening the details that matter for t...

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4m read
DEV Community • 2026-04-21 14:31

AWS vs GCP ตอนที่ 1: Network & Security

AWS vs GCP ตอนที่ 1: Network & Security บทความนี้เขียนเพื่อพยายามสรุปเปรียบเทียบ AWS และ GCP จะเขียนออกแนวโน้ตส่วนตัว แบบสรุปคร่าวๆ ไม่ลงรายละเอียดเยอะ (เพราะก็ไม่ได้เชี่ยวชาญ 555) ที่คิดไว้ก็อยากเขียนหลายเรื่อง แต่ขอเริ่มจากเรื่อง Network ก่อนแล้วกัน Network Architecture ก่อนอื่นต้องพูดถึงคำศัพท์กันก่อน ในแง่ภูมิศาสตร์: Global, Region, Zone (สำหรับ AWS เรียก Availability Zone...

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2m read
Ransomware Negotiator Pleads Guilty to Aiding BlackCat Attacks in 2023
The Hacker News • 2026-04-21 14:31

Ransomware Negotiator Pleads Guilty to Aiding BlackCat Attacks in 2023

A third individual who was employed as a ransomware negotiator has pleaded guilty to conducting ransomware attacks against U.S. companies in 2023. Angelo Martino, 41, of Land O'Lakes, Florida, teamed up with the operators of the BlackCat ransomware starting in April 2023 to assist the e-crime gang in extracting higher amounts as ransoms. "Working as a negotiator on behalf of five different

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Go Make Things • 2026-04-21 14:30

Pruning the garden (the end of the Daily Dev Tips newsletter)

tl;dr: I’m ending my Daily Dev Tips newsletter, and transitioning to RSS exclusively. I will still be publishing articles here (just not by email). I’m done I end up quoting Anna Cook a lot here. Recently, she posted on BlueSky… I’m so tired of the tech hype machine. Idgaf how you’re optimizing with AI, what the hell are you doing for people? How are you making the world actual...

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DEV Community • 2026-04-21 14:29

Elasticsearch Cluster Health 101: Understanding Your Distributed System's Vital Signs

Elasticsearch Cluster Health 101: Understanding Your Distributed System's Vital Signs You ship your Elasticsearch cluster to production. Traffic hits it. Three hours later, your monitoring dashboard flashes yellow. Your heart sinks. What does that mean? Are you in trouble? Should you wake up the on-call engineer at 2 AM? This post teaches you to read your cluster's health like a doctor...

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9m read
DEV Community • 2026-04-21 14:28

How to Compare package.json Files: A Node.js Developer's Guide

You open a pull request to review a dependency update and the diff is a wall of text — 80 lines of package names and version numbers. Your teammate says "just bumped a few deps", but buried in there is a downgraded React version and two new packages nobody discussed. Manually spotting that by eye is error-prone. A proper side-by-side diff would have caught it in seconds. Here are four methods fo...

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5m read
HackerNoon • 2026-04-21 14:27

Where Is Africa in Jensen Huang’s Five-Layer AI Cake?

Africa isn’t one country, but it shares the same structural gaps: energy, water, education. Ethiopia shows what’s possible with sovereign energy investment. Jensen Huang’s five-layer AI model highlights a hard truth: Africa mostly consumes, it doesn’t build. China proves energy is the real competitive edge. No energy, no development. No development, no tech. No tech, no AI. The path forward is s...

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