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DEV Community • 2026-04-29 05:24

Supabase pgvector Guide — Semantic Search, RAG, and Recommendations in PostgreSQL

Supabase pgvector Guide — Semantic Search, RAG, and Recommendations in PostgreSQL pgvector adds vector types to PostgreSQL. Supabase enables it by default — meaning you can build semantic search, RAG, and recommendation systems without any extra infrastructure. Schema Setup CREATE EXTENSION IF NOT EXISTS vector; CREATE TABLE documents ( id UUID DEFAULT gen_random_uuid(...

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2m read
DEV Community • 2026-04-29 05:23

Flutter Animations Guide — AnimationController, Hero, Implicit, and Rive

Flutter Animations Guide — AnimationController, Hero, Implicit, and Rive Animations are the glue of great UX. Done right they feel natural; done wrong they tank performance. Here's a complete breakdown of Flutter's animation system. AnimationController + Tween Most flexible. Use for custom, orchestrated animations. class FadeInWidget extends StatefulWidget { final Widge...

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2m read
Close the loop
DEV Community • 2026-04-29 05:23

Close the loop

I had an agent pick me a new air conditioner while I ate my lunch. I gave it my situation - a 300-square-foot bedroom on an INR 40,000 budget, and I wanted something quiet enough to sleep through. My allergies flare up every summer, so I needed a filter that actually caught pollen and fine dust, something better than the box-standard mesh most units at this price ship with. And I wanted one thing...

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12m read
DEV Community • 2026-04-29 05:16

When I Tried Doing Everything With AI, It Backfired

There was a phase where I started pushing AI into everything. Writing with AI. Planning with AI. Coding with AI. Research with AI. Even thinking through decisions with AI. At first, it felt like leverage at scale. Why not use an extraordinary tool for everything? That seemed rational. But slowly, something strange happened. The more I tried using AI everywhere… the worse some of my thinking...

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Product Hunt — The best new products, every day • 2026-04-29 05:06

Compact Message Composer by CometChat

Everything users expect from modern chat. Out of the box. Discussion | Link

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1m read
‘They’re supposed to be handmade’: zine creators fight to resist AI influence
newest submissions : multi • 2026-04-29 05:06

‘They’re supposed to be handmade’: zine creators fight to resist AI influence

submitted by /u/Just-Grocery-2229 to r/technology [link] [comments]

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Experienced Devs • 2026-04-29 05:06

How do you handle an EM who won't accept technical direction?

Recently, I took a new job at a company as an IC. Both myself and the EM were hired during the same person. Therefore the EM did not select me. We were both hired by a previous EM who moved to a separate team. After joining it is clear that the EM knows just enough to appear technical, but is missing some fundamentals both in terms of core skills, architecture and general engineering strategy. Som...

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2m read
DEV Community • 2026-04-29 05:04

Tauri v2 vs Electron After 6 Months of Real Development — My Honest Take

All tests run on an 8-year-old MacBook Air. I've shipped multiple Mac apps with Tauri v2. I evaluated Electron seriously before choosing Tauri. Here's what 6 months of actual development taught me — not benchmarks, actual experience. Bundle size: Tauri wins, obviously Electron bundles Chromium. Your app is 150MB before you write a line of code. Tauri uses the system WebView (WKWe...

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2m read
DEV Community • 2026-04-29 05:00

Why We Banned 'Within the Realm of...' From Our AI Game Descriptions

A small portal's accidental brush with Google's scaled-content-abuse algorithm — and the 11-rule prompt change that fixed it. TL;DR We run a 6,800-game HTML5 portal where every game description is generated by GPT-4.1-mini using a prompt that tries to sound editorial. Last week we caught the prompt mid-disaster: 56% of descriptions across our entire corpus opened with the same six w...

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9m read
Why Most IoT Visibility Stacks Stall at Level 2 (And What Climbing to Level 3 Actually Looks Like in Code)
DEV Community • 2026-04-29 05:00

Why Most IoT Visibility Stacks Stall at Level 2 (And What Climbing to Level 3 Actually Looks Like in Code)

I've spent the last decade-plus designing IoT tracker hardware and protocol payloads for logistics, fleet, and cold chain customers across more than a hundred countries. There's a pattern that shows up in roughly half the architecture reviews I sit in: a customer believes they have real-time visibility, the dashboard agrees with them, and the actual telemetry pipeline does not. This post is the d...

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/r/ReactJS - The Front Page of React • 2026-04-29 04:59

What usually becomes the hardest part of maintaining large React apps?

I’ve been working with React for a while and it feels great early on, but I’m curious what actually becomes difficult once applications grow and multiple people are working on them. A few pain points I keep hearing about: state management getting messy over time prop drilling / context overuse component reusability becoming harder than expected performance/debugging issues in larger apps For dev...

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1m read
How I Revamped a Local Cram School Website Using AI (Claude, Gemini, and Codex)
DEV Community • 2026-04-29 04:57

How I Revamped a Local Cram School Website Using AI (Claude, Gemini, and Codex)

Introduction I recently took on the challenge of modernizing the website for my parents' cram school in rural Japan. As an IT professional specializing in cloud infrastructure, I wanted to see how far I could go by leveraging AI as my primary development partner. Here is the story of how Claude, Gemini, and Codex helped me transform an outdated site into a modern web presence. ...

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DEV Community • 2026-04-29 04:55

🚀 From Prompt to Production: Building an AI App with Gemini & Vertex AI (Google Cloud NEXT ’26 Deep Dive)

There were many big AI announcements at Google Cloud NEXT '26—but what really impressed me was how simple it is now to turn your idea into an actual working application using AI. I'll share here my first-hand experience with Gemini and Vertex AI, and show you how to build a small yet working AI app in minutes! 🌐 What Was Announced? At Google Cloud NEXT '26, Google doubled down on making AI more...

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The Automation Paradox: You Cannot Prompt Your Way Out of an Architecture Problem
DEV Community • 2026-04-29 04:53

The Automation Paradox: You Cannot Prompt Your Way Out of an Architecture Problem

The Automation Paradox: You Cannot Prompt Your Way Out of an Architecture Problem The Forum Is Always the Same Open any AI developer community right now -- Reddit, Discord, the dark corners of Facebook groups full of people who bought a course six months ago -- and you will find two kinds of posts rotating in an endless loop. The first kind goes like this: "My agent ran o...

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19m read
DEV Community • 2026-04-29 04:48

Best Daily Study Routine for AWS AIF-C01 Exam Preparation

Preparing for the AWS Certified AI Practitioner (AIF-C01) exam isn’t about long study hours—it’s about consistent, structured execution. Most candidates either overconsume content or jump between resources without a system. What works instead is a repeatable daily routine—one that compounds knowledge, not confusion. Let’s design that. The Core Principle: Study Like a Builder, Not a Reader If your ...

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DEV Community • 2026-04-29 04:48

Why Data Quality is Becoming More Important Than Model Size in Modern AI Systems

For years, progress in artificial intelligence was closely tied to scaling laws, where increasing model size, dataset size, and compute power led to consistent performance improvements. Large-scale systems like GPT-4 and architectures such as Transformer architecture demonstrated that bigger models could achieve remarkable capabilities across language, vision, and multimodal tasks. However, recent...

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3m read
Ukraine Signs 10-Year Defense Export Deals With 3 Middle East Countries
newest submissions : multi • 2026-04-29 04:48

Ukraine Signs 10-Year Defense Export Deals With 3 Middle East Countries

submitted by /u/Same_Efficiency_3325 to r/worldnews [link] [comments]

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DEV Community • 2026-04-29 04:47

Debugging HTTP Requests in ASP.NET Core Across Environments

When the same HTTP request works in dev but fails in production, debugging gets messy fast. Example: a request returns 200 in dev but 400 in prod because of a missing header or slightly different payload—and it’s not obvious why. Most of the time, this means jumping between logs, Postman, and custom middleware, trying to spot the difference. To simplify this, I started working on a lightweight ...

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DEV Community • 2026-04-29 04:47

Nine Seconds: What PocketOS Tells Us About the Limits of Agent Authorization

On April 25, a Cursor-based agent running Claude Opus 4.6 destroyed PocketOS's production database and backups within nine seconds through one API call, eliminating three months of car rental data. Cross-posted from agentlair.dev/blog/pocketos-nine-seconds The Incident A Claude Opus 4.6 agent operating within Cursor removed PocketOS's production database along with its backups thro...

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4m read
DEV Community • 2026-04-29 04:46

Opinion: Why You Should Use NATS 2.10 Over Kafka for Edge Messaging

After benchmarking 12 edge messaging workloads across 400+ IoT nodes, I’ve found NATS 2.10 delivers 11x lower p99 latency and 94% less memory overhead than Kafka 3.6 for edge use cases — and it’s not even close. 📡 Hacker News Top Stories Right Now Ghostty is leaving GitHub (2005 points) Before GitHub (334 points) Bugs Rust won't catch (41 points) How ChatGPT serves ads (213 po...

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