Morning.dev

DEV Community • 2026-04-17 09:45

Why Your RAG System Costs 10x More Than You Think

The hidden infrastructure tax of Retrieval-Augmented Generation You've probably heard RAG is the future of LLMs. Retrieval-Augmented Generation lets you ground AI responses in your own data without fine-tuning. It sounds simple. It's not. Most founders and engineers I talk to think RAG costs are straightforward: embed your docs, store them in a vector DB, query at inference time. Three steps, do...

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6m read

DEV Community • 2026-04-17 09:44

AI Prompt Security: How Real-Time Filtering Stops Data Leaks

Not long ago, data breaches were mostly associated with malware, exploits, and unauthorized access. Security teams focused on protecting systems, networks, and endpoints. That model is changing. Now, a breach can begin inside a chat window. A simple prompt can trigger actions, expose sensitive data, or override safeguards without ever looking like an attack. The reason is structural. Traditi...

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6m read

DEV Community • 2026-04-17 09:42

Hot-Knowledge-Sharing-Website 开发环境配置指南

本指南主要用于本地测试环境的搭建与配置，涵盖数据库、前端和后端的部署说明。 1. 数据库部署 (PostgreSQL) Windows 环境官方网站: PostgreSQL (请参考官方文档进行安装) 环境变量配置: 将安装目录下的 bin 文件夹（例如 D:\PostgreSQL\bin）添加到系统环境变量 PATH 中。 macOS 环境安装 PostgreSQL: 直接在终端运行以下命令（需确保已安装 Homebrew）： brew install postgresql@18 等待安装完成。启动服务: 使用以下命令启动 PostgreSQL 后台进程： brew services start postgresql 注意: 可在...

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1m read

How to Run AI Coding Agents Continuously for Days Without Losing the Plot

SitePoint • 2026-04-17 09:40

How to Run AI Coding Agents Continuously for Days Without Losing the Plot

Simon Last (Notion co-founder) shared a method enabling AI coding agents to run continuously for 13 days—far exceeding typical agent limits of about an hour. Here's how to build resilient long-running coding agents that don't lose context or lose the plot. Continue reading How to Run AI Coding Agents Continuously for Days Without L...

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1m read

DEV Community • 2026-04-17 09:40

Angular Change Detection — The Complete Architect Guide

Most Angular developers use change detection… But very few truly understand how it works internally. Let’s break it down 👇 ** What is Change Detection? ** Change Detection is Angular’s mechanism to keep: 👉 UI (DOM) in sync with 👉 Application State (Data) Whenever data changes → Angular updates the UI automatically. How It Works Angular maintains a component tree and per...

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1m read

HackerNoon • 2026-04-17 09:40

The Agentic Paradigm Shift: Why Your "Bot" Just Became Obsolescent

The shift from bots to agents isn't just renaming. It's a change in who does the thinking — from developer at design time to model at runtime.

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1m read

Product Hunt — The best new products, every day • 2026-04-17 09:38

Harker 2.0

Private speech-to-text on your Mac Discussion | Link

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1m read

DEV Community • 2026-04-17 09:38

Self-host Open WebUI + Ollama in production — the config nobody writes about

Open WebUI's quickstart is great for local dev. One command, it's running. But putting it on a real server for a team requires a lot more — SSL, auth lockdown, WebSocket proxy, backups. Here's the full production config I use. ## The stack ollama — LLM runner openwebui — Chat UI nginx — Reverse proxy + SSL ## The nginx config that trips everyone up Open WebUI uses WebSockets for stream...

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1m read

DEV Community • 2026-04-17 09:37

I Spent 3 Months Tuning a Tokio Runtime for My Robot - Here's What No Tutorial Tells You

Last November, my robot arm started dropping sensor frames at exactly 47ms intervals. Not randomly - exactly 47ms, like clockwork. It would read joint angles perfectly for a while, then miss a window, then recover. The anomaly detector we'd wired into the control loop kept triggering false positives. My teammate Rui and I spent two full weeks convinced the CAN bus driver was broken. It wasn't the...

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4m read

Authentication Systems Explained: JWT vs Sessions (What You Should Actually Use in 2026)

DEV Community • 2026-04-17 09:36

Authentication Systems Explained: JWT vs Sessions (What You Should Actually Use in 2026)

Authentication is one of those topics every developer uses—but not everyone truly understands. At some point, you’ll face this decision: 👉 Should I use JWT (JSON Web Tokens) or Session-based authentication? Both are widely used. Both solve authentication. But they behave very differently under the hood—and choosing the wrong one can create security, scalability, and maintenance issues later. L...

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3m read

DEV Community • 2026-04-17 09:35

Flattening Nested Arrays in JavaScript: A Complete Guide for Developers & Interview Success

Visual 1: Nested Array Structure const nested = [1, [2, 3], [4, [5, [6, 7]]]]; *By Bhupesh – JavaScript Developer * Published on Dev.to – April 2026 Hey there! If you’ve ever stared at deeply nested data from an API and wondered how to turn it into something usable, you’re not alone. As a JavaScript developer who’s shipped production apps at scale, I’ve seen flattening nested arrays c...

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5m read

DEV Community • 2026-04-17 09:32

Network Configuration

This section introduces how to configure and connect to the network in the QuecPython solution. QuecPython supports multiple types of NICs, each with different usage methods. This chapter will introduce them one by one to facilitate the understanding of network configuration applications. Network Configuration Introduction QuecPython supports various types of NICs. How can we configure...

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3m read

Day 1 of Building Our Internet-Made Game: Setting Up Godot

DEV Community • 2026-04-17 09:32

Day 1 of Building Our Internet-Made Game: Setting Up Godot

After letting the internet shape our game’s genre, setting, and characters, we’ve finally reached the point where ideas turn into a build. Day 1 starts with the engine. There’s a big difference between talking about a game and actually starting one. Up to this point, our project has been all about decisions: choosing the genre, defining the world, and letting the community shape what this game c...

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3m read

DEV Community • 2026-04-17 09:32

Structure-Driven Engineering Organization Theory #5 — Product-Organization Isomorphism

Wherever the product's UX is broken, the organization is hollow in the same place. Product and organization break symmetrically and heal symmetrically. Scope of this chapter: thinking layer (arguing that product and organization are isomorphic structures) + design layer (laying out the design principles that let both be handled with the same vocabulary). How this starts on the floo...

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11m read

DEV Community • 2026-04-17 09:31

Callback Function and Array Iterations in JS

What is Callback function? A callback function is a function that is passed as an argument to another function. And is executed later. function greet(name, callback) { console.log("Hello " + name); callback(); // calling the callback } function sayBye() { console.log("Bye!"); } greet("Varun", sayBye); Output : Hello Varun Bye! Why Callback function ? To h...

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1m read

DEV Community • 2026-04-17 09:31

Building an AI-Powered Detection System with Hindsight Memory Integration

Introduction Modern AI systems are becoming increasingly powerful in detecting scams, deepfakes, and suspicious patterns. However, one major limitation persists: lack of memory across interactions. Traditional models process each input independently, which means they cannot learn from past detections unless explicitly designed to do so. To overcome this, I implemented a memory-augmented detection...

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4m read

DEV Community • 2026-04-17 09:31

I Spent 3 Months Tuning a Tokio Runtime for My Robot — Here's What No Tutorial Tells You

I Spent 3 Months Tuning a Tokio Runtime for My Robot — Here's What No Tutorial Tells You Last November, my robot arm started dropping sensor frames at exactly 47ms intervals. Not randomly — exactly 47ms, like clockwork. It would read joint angles perfectly for a while, then miss a window, then recover. The anomaly detector we'd wired into the control loop kept triggering false positives. My teamm...

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4m read

DEV Community • 2026-04-17 09:30

Shield: AI detection system

Building an AI-Powered Detection System with Hindsight Memory Integration Introduction Modern AI systems are becoming increasingly powerful in detecting scams, deepfakes, and suspicious patterns. However, one major limitation persists: lack of memory across interactions. Traditional models process each input independently, which means they cannot learn from past detections unless explicitly desi...

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5m read

Calling Apple Vision API from Tauri for Offline OCR [PDF Devlog #2]

DEV Community • 2026-04-17 09:28

Calling Apple Vision API from Tauri for Offline OCR [PDF Devlog #2]

Devlog #2. Last time I covered the hybrid PDF engine setup (Rust + PDFKit + Swift). This time: getting Apple Vision API working from Tauri for fully offline OCR. The goal Extract text from scanned/image-based PDFs — completely offline, no cloud involved. Apple's Vision Framework ships with every Mac, handles Japanese and English well, and costs nothing. The challenge: Tauri is Rust...

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2m read

DEV Community • 2026-04-17 09:28

Angular vs React for ASP.NET Core: A Comprehensive Comparison Guide (2026)

If you are starting a new project on ASP.NET Core in 2026, the single biggest frontend decision you will make is Angular vs React. Both frameworks pair beautifully with a .NET backend, both have Visual Studio templates, and both are used by Fortune 500 companies to ship serious enterprise applications. Yet they come from very different philosophies — and that difference has real consequences for y...

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19m read