DEV Community • 2026-04-07 22:54

We Were Wasting Thousands on AI. Here's How We Fixed It.

And why we turned the fix into a product anyone can use. The Problem Started With Our Own Product My team and I were building Saasio — a no-code SaaS platform that lets users launch products without writing a single line of code. Like most modern platforms, we added AI capabilities so users could get things done faster: generate UI components, write copy, answer questions about thei...

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DEV Community • 2026-04-07 22:53

Light Just Cut KV Cache Memory Traffic to 1/16th

Light Just Cut KV Cache Memory Traffic to 1/16th The bottleneck in long-context LLM inference isn't compute. It's memory bandwidth. Every decode step in a Transformer scans the entire KV cache to generate a single token. That's O(n) memory reads for context length n, every single step. No matter how fast your GPU's ALUs get, this O(n) memory wall doesn't budge. A March 2026 ArXiv pape...

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Course 1 of 3: Upgrading Apps with Gen AI 🤖
DEV Community • 2026-04-07 22:45

Course 1 of 3: Upgrading Apps with Gen AI 🤖

Table of Contents Introduction Upgrading a TravelGuide App with Generative AI Some Basic Concepts Before We Proceed (Skip If You Want) Amazon Bedrock: The Problems It Actually Solves Custom Knowledge Bases And Model Customization in Amazon Bedrock Hands On Lab: Creating a Knowledge Base AI Safety Controls with Amazon Bedrock Guardrails Integrating AI Models Through the Bedrock API Engi...

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Echo JS • 2026-04-07 22:43

A lightweight front end framework with native JavaScript/TS feel

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Iranian hackers' targeting of US critical infrastructure has escalated since start of war, US says
newest submissions : multi • 2026-04-07 22:42

Iranian hackers' targeting of US critical infrastructure has escalated since start of war, US says

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

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Product Hunt — The best new products, every day • 2026-04-07 22:42

GAIA

Proactive personal assistant that handles your day Discussion | Link

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Product Hunt — The best new products, every day • 2026-04-07 22:42

GAIA

Proactive personal assistant that handles your day Discussion | Link

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Lobsters • 2026-04-07 22:41

Nix security advisory: Privilege escalation via symlink following during FOD output registration

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DEV Community • 2026-04-07 22:41

Why Your Agent Doesn't Know What Time It Is

I was building DraftKings lineups with my AI agent when it told me it was Monday. It was Tuesday. This is a story about a $0 bug that revealed a billion-dollar gap in AI infrastructure. It was Masters week. I had my AI agent — Hermes, running on a long-lived session — helping me build optimal DraftKings golf lineups. We'd been going back and forth for a while: pulling player stats, analyzing cou...

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[Boost]
DEV Community • 2026-04-07 22:41

[Boost]

Goodbye localhost: why Quarkus + Vanilla JS + AWS Lambda + DynamoDB Is the Fastest Path from Idea to Production Vinicius Senger Vinicius Senger ...

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Hacker News: Front Page • 2026-04-07 22:41

Trump announces two-week ceasefire as Iran says talks to begin

Article URL: https://www.reuters.com/world/iran-war-live-tehran-rejects-ceasefire-deal-trumps-deadline-reopen-strait-hormuz-2026-04-07 Comments URL: https://news.ycombinator.com/item?id=47682276 Points: 40 # Comments: 54

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Hacker News: Front Page • 2026-04-07 22:41

US and Iran agree to provisional ceasefire

https://www.reuters.com/world/iran-war-live-tehran-rejects-c... Comments URL: https://news.ycombinator.com/item?id=47682276 Points: 98 # Comments: 203

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Trump suspends Iran attack for two weeks, subject to Hormuz Strait opening
newest submissions : multi • 2026-04-07 22:39

Trump suspends Iran attack for two weeks, subject to Hormuz Strait opening

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

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DEV Community • 2026-04-07 22:38

Your accessibility score is lying to you

Automated accessibility testing tools, such as axe-core by Deque, WAVE, Lighthouse are bit like a spellcheck for web accessibility. They are really useful for identifying and resolving many common accessibility issues quickly. There are a whole range of tools that provide similar services, a way to detect some of the most common accessibility issues across a page. The problem with auto...

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/r/ReactJS - The Front Page of React • 2026-04-07 22:37

I got tired of Alt-Tabbing between my browser and IDE for visual fixes, so I built a toolbar that lets you click elements and tell the AI what to change, diffs apply through your dev server

When I'm looking at my Next.js app and I see a spacing issue, I have to: Inspect the element Figure out which component renders it Find the file in my IDE Describe the problem to Cursor/Copilot or whatever AI tool i use Review and apply For a 2px margin fix. Every time. I built OpenMagic to short-circuit steps 1-4. Run npx openmagic in your project folder. A floating toolbar appears in your app....

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DEV Community • 2026-04-07 22:37

Zephyr Events – A 2KB TypeScript event emitter that's race-condition safe

I built a tiny event emitter that fixes a bug most people don't know they have: if a handler calls off() on itself during emit, the next handler gets skipped. EventEmitter3, Node's built-in EventEmitter, and mitt all have this problem. Zephyr Events uses snapshot-based iteration so handlers can subscribe, unsubscribe, or clear listeners mid-emit without side effects. If you don't need that safety...

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newest submissions : multi • 2026-04-07 22:36

Bangladesh conducts emergency measles vaccinations as outbreak kills more than 100 children

submitted by /u/AudibleNod to r/news [link] [comments]

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DEV Community • 2026-04-07 22:36

WebAssembly 3.0 with .NET: The Future of High-Performance Web Apps in 2026

WebAssembly 3.0 with .NET: The Future of High-Performance Web Apps in 2026 WebAssembly has evolved from an experimental browser technology to "boring" production infrastructure. In 2026, the conversation has shifted from "Can we use Wasm?" to "Where is the optimal place to use Wasm?" For .NET developers, this means a mature Blazor ecosystem, seamless interop, and the emergence of the Co...

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Echo JS • 2026-04-07 22:33

Zephyr Events – A 2KB TypeScript event emitter that's race-condition safe

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DEV Community • 2026-04-07 22:32

Part 5 — How AI Actually Learns: The Training Loop Explained

The AI figured it all out by failing — and failing — and failing — until it didn't. Nobody programmed ChatGPT to write poetry. Nobody wrote rules for how to translate between Arabic and English. Nobody told the AI what "smart glasses" means. In the previous article we built an artificial neuron and learned that it has weights — importance multipliers that determine how much each input influenc...

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