Morning.dev

Why do test coverage metrics keep misleading developers?

DEV Community • 2026-04-22 12:11

Why do test coverage metrics keep misleading developers?

High test coverage is often seen as a sign of software quality, yet it raises an important question: Why do well-tested applications still have bugs? Many assume that high scores on test coverage metrics translates to high-quality software. However, the truth is much different. While test coverage can tell you how much of your code is executed during testing, it does not indicate if those tests a...

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13m read

DEV Community • 2026-04-22 12:09

SpaceX, Colossus, and the $60B Bet on Cursor - the "Compute-to-Code" Pipeline

The recent announcement of SpaceX’s strategic deal with Cursor AI (Anysphere Inc.)—an option to acquire for $60B or a $10B partnership—is more than just a high-valuation headline. For those of us tracking deep-learning infrastructure, it represents the first major vertical integration of an AI-native IDE with a world-class supercluster. By moving Cursor’s training onto the 'Colossus' supercompute...

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4m read

DEV Community • 2026-04-22 12:08

Session Memory Architecture: The Pattern That Keeps Your Agent Coherent Across Context Resets

Your Claude Code agent ran perfectly for 45 minutes. Built context. Understood the codebase. Made decisions that depended on what it learned in the first 30 minutes. Then the context limit hit. The session compacted. Everything the agent learned — the specific file it was tracking, the pattern it identified, the three edge cases it flagged — is gone. The next session starts fresh. The agent read...

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6m read

DEV Community • 2026-04-22 12:08

Coordinator Resume Integrity: What Happens When a Claude Code Agent Loses Its Mind Mid-Handoff

Your coordinator agent dispatched three sub-agents. Sub-agent 1 finished. Sub-agent 2 is halfway through. Sub-agent 3 hasn't started yet. Then your coordinator's session ends. Context limit hit. Cron killed the process. Doesn't matter why — the coordinator is gone. Next cron tick, a new coordinator starts. It doesn't know Sub-agent 1 is done. It doesn't know Sub-agent 2 is mid-task. It restarts ...

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5m read

DEV Community • 2026-04-22 12:07

Efficiency at Scale: Scaling, Scheduling, and Measuring Databricks SQL

In our final look at Databricks SQL, we move beyond individual table tweaks to the broader architecture. Optimization isn't just about making one query fast; it’s about building a sustainable, cost-efficient system. This means picking the right warehouse size, automating recurring workloads, and—most importantly—proving your impact with hard data. 1. Right-Sizing Your Warehouse A co...

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4m read

DEV Community • 2026-04-22 12:07

Why B2B content teams are buying AI humanizer APIs in 2026

Originally published at tohuman.io Search impressions for "AI humanizer API" doubled between the last week of March and the third week of April 2026 — the fourth consecutive week of growth. A query that barely registered a year ago is now a weekly signal, and the people behind it aren't students trying to slip one essay past Turnitin. They're developers and content ops leads looking for someth...

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4m read

DEV Community • 2026-04-22 12:06

Optimizing Delta Tables: From Maintenance to Managed Excellence

If high-performance SQL queries are the engine of your data platform, then your Delta tables are the fuel. Even the best-written SQL can't overcome a poorly organized data layer. In this guide, we shift from query logic to the physical storage layer—exploring how to maintain, cluster, and automate your Delta tables for maximum efficiency. The Problem: "Small File Syndrome" and Data Sc...

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3m read

DEV Community • 2026-04-22 12:06

Deploy to Oracle with drm-cli + Flyway: A Step-by-Step Guide

Oracle deployments have a reputation. They're slow to set up, painful to automate, and the tooling ecosystem tends to assume you have deep pockets. If you've tried to build a reliable Oracle deployment pipeline, you've probably hit at least one of these walls: No consistent audit trail of what was deployed, when, and whether it succeeded Pre/post deployment steps scattered across runbooks and tr...

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5m read

DEV Community • 2026-04-22 12:05

Why Every AI-Coded App Is an Island

AI tools generate apps in minutes. But each one lands with its own database, auth, and deploy target. Here is why that matters and what to do. AI coding tools have changed how fast you can build internal software. Claude Code, Cursor, and similar tools can generate a working app in 30 minutes. A CRM. A billing dashboard. A task manager. The code is real, it runs, and it solves a problem. Then yo...

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3m read

DEV Community • 2026-04-22 12:05

How to Connect n8n to OpenAI: Complete Integration Guide (2026)

You already know that n8n is one of the most powerful automation tools available. With over 400 built-in integrations, native AI nodes, and a fair-code license that puts you in control, it is no wonder businesses are moving away from per-execution pricing models like Zapier or Make. But here is where things get really interesting: when you connect n8n to OpenAI, your workflows stop being simple i...

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13m read

Hacker News: Front Page • 2026-04-22 12:04

3.4M Solar Panels

Article URL: https://tech.marksblogg.com/american-solar-farms-v2.html Comments URL: https://news.ycombinator.com/item?id=47862386 Points: 17 # Comments: 0

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1m read

DEV Community • 2026-04-22 12:00

How to Build a Crypto Arbitrage Bot Across EVM Chains

Building a crypto arbitrage bot across EVM chains comes down to three things: quotes from every chain in parallel, a fast comparison loop that spots price gaps larger than fees, and a slippage-tolerant executor that actually lands the trade before the gap closes. Arbitrage windows on EVM chains typically last under 30 seconds on majors and 2-10 seconds on L2s, which means your bot's latency budget...

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9m read

DEV Community • 2026-04-22 12:00

How I Designed a Freemium API Plan Developers Actually Want to Pay For

The Painful Origin Story Two years ago, I launched a BIN lookup API with pricing that looked good on a spreadsheet and failed everywhere else. The model was simple: free tier with 100 requests per month, Pro tier at $29/month with 10,000 requests, and Enterprise at custom pricing. I assumed the progression made sense. Users would try the free tier, hit the limit quickly, and upgrade. ...

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11m read

"How we built Birik — group expense splitting on Stellar in 30 days"

DEV Community • 2026-04-22 11:59

"How we built Birik — group expense splitting on Stellar in 30 days"

The problem we tried to solve Splitwise and Tricount solved the tracking problem a decade ago: who owes what in a group, who's even, who needs to pay up. They're great. Millions of people use them. But they only ever got you halfway. When the dust settles and the app says "Selin owes you 340 TL" — you still have to actually move the money. Bank transfer, PayPal, Revolut, cash. Fees. De...

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8m read

Hacker News: Front Page • 2026-04-22 11:58

GitHub CLI now collects pseudoanonymous telemetry

Article URL: https://cli.github.com/telemetry Comments URL: https://news.ycombinator.com/item?id=47862331 Points: 16 # Comments: 2

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1m read

Product Hunt — The best new products, every day • 2026-04-22 11:56

Reloop Animation Studio

Turn any video idea into Pixar, Clay or Manga Discussion | Link

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1m read

Your AI Stream is Fast, but Your UI is Lagging. Here’s Why.

DEV Community • 2026-04-22 11:56

Your AI Stream is Fast, but Your UI is Lagging. Here’s Why.

We’ve all seen it. You’re building a sleek AI-chat interface or a real-time agent dashboard. The tokens are flying in from the server at light speed, but the moment you try to scroll or click a "Stop" button, the tab feels like it's stuck in mud. Most devs look at their React code or their Tailwind classes. They’re looking in the wrong place. The problem isn't your UI library. The problem is tha...

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3m read

HackerNoon • 2026-04-22 11:55

From Hypertext to Algorithmic Culture

When hypertext first entered theoretical discussions, it appeared as a visible transformation of writing. Text was no longer arranged exclusively in sequence, but in segments connected through explicit links. A reader could move laterally rather than progressively, choosing one path among many possible continuities. The most important feature of hypertext was not the link itself, but the cultural ...

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1m read

Your pytest retries are lying to you. The hidden cost of --reruns, and the plugin I wrote so I could actually see what my tests were doing.

DEV Community • 2026-04-22 11:55

Your pytest retries are lying to you. The hidden cost of --reruns, and the plugin I wrote so I could actually see what my tests were doing.

Picture this. A test fails in CI. It's been flaky all week — fails on push, passes when you rerun. So you add --reruns 2 to the pytest command. Now the suite passes. Green build. Ship it. A week later, the same test fails in production in a way that only happens under load. You go back to look at the build that passed, and the report says... "passed." One line. No context. No hint that the test e...

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5m read

DEV Community • 2026-04-22 11:49

Analyzing the Monthly Web Dev Career Thread: What…

Originally published at norvik.tech Introduction Deep dive into the implications of the new monthly thread for web development careers, addressing key questions and strategies. What the Monthly Thread is and Its Purpose The new monthly thread is a dedicated space for web development career inquiries, aiming to centralize discussions that previously cluttered general forum...

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1m read