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ProgrammingDEV Community ·

NoteMate AI: A Local-First, Privacy-Preserving AI Note Assistant

This is a submission for the Hacktoberfest Weekend Challenge: Build for a Friend I built NoteMate AI ("Your thoughts, organized by AI. Your notes, under your control.") for my friend, who is currently managing a packed schedule of university lectures, academic study sessions, and team project meetings. My friend constantly ran into three major friction points: Scattered, Messy Inputs: Information was coming in from everywhere—spoken lectures, raw audio voice recordings, slide deck PDFs, and quickly typed scratch notes. Cognitive Overload & Manual Revision: Manually combing through hour-long le

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ProgrammingDEV Community ·

The Cheapest, Fastest Model Is the Best Security Reviewer. I Tested 8 to Find Out.

This is a submission for the Kaggle Benchmarking Challenge I built a 38-case security vulnerability detection benchmark on Kaggle that tests whether LLMs can identify vulnerabilities in Python code with deliberate false-positive traps designed to distinguish data-flow reasoning from pattern matching. The itch came from studying for CEH v13. Every week, another "AI security assistant" launches claiming to replace human code review. I wanted to know: do LLMs actually reason about security, or do they just recognize recognizable shapes? Most security benchmarks test textbook cases.

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ProgrammingDEV Community ·

10,000 units a day, one API key, and three caps that are not the same number

Nakodo searches YouTube for creators who fit a brand, so the YouTube Data API is not a nice-to-have integration, it is the product's floor. And that API has a hard daily budget: 10,000 units, resetting at midnight Pacific time. The unit costs are the whole story: search.list costs 100 units channels.list, videos.list, playlistItems.list, commentThreads.list cost 1 unit each So a project gets a hundred searches a day. Not a hundred per user. A hundred, total, across everybody.

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ProgrammingDEV Community ·

1,000 results, 641 unique jobs — deduping by URL fails because every board rewrites the query string

A user's job-matching agent kept ranking near-identical listings against each other, burning tokens and crowding out real candidates. I pulled a sample to investigate: one search for "data engineer" in Berlin returned 1,000 results — and 359 of them were duplicates of other entries in the same result set. My dedup key was the URL. That was the bug. Job boards rewrite URLs for tracking.

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ProgrammingDEV Community ·

What a Spring Boot Annotation Actually Do

A Spring Boot annotation is essentially a label or a form of metadata placed above a Java class to instruct the Spring Framework on what tasks to perform in the background. Simply put, in the past, configuring the Spring Framework required writing large, complex XML files. Spring Boot has eliminated that hassle through the use of annotations. You simply place an annotation—prefixed with an '@' symbol—above a class, and the Spring Framework automatically handles tasks like object creation and management in the background. Here is a simple explanation of how these annotations actually work behin

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ProgrammingDEV Community ·

Next 16 renamed middleware to proxy, and our whole auth boundary is one allowlist

I have been building Nakodo, a field guide to YouTube creators: it reads a brand's website, searches YouTube for creators who fit, collects the contact details those creators publish, and drafts a first message. It runs on Next 16.3.7 with Supabase for auth. The first thing that surprised me on this build was that middleware.ts no longer exists. The file is src/proxy.ts and the named export is proxy. From the Next 16 docs shipped in the package: Starting with Next.js 16, Middleware is now called Proxy to better reflect its purpose.

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ProgrammingDEV Community ·

Slop Kart - Official Trailer, rendered from the game's own code

Slop Kart is our free browser kart racer, and this is its trailer: 55 seconds, cut like an anime opening. How it was made None of the racing footage is a screen recording. Because we own the game's source, the trailer runs the real game in a director mode: Scripted races. Each shot is a small scenario: who is on track, where they start, what they do. The simulation is baked to a per-tick recording, so every frame is a pure function of time and renders the same way every time.

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ProgrammingDEV Community ·

SaS além da vitrine: Service as Software, o que o agente compra e o humano só vê

A gente vai sofrer uma revolução muito rápida. Os agentes pessoais já estão no caminho: Dots, Grok Bot e Muse. A capacidade nova não é o chat. É o computador interno, na nuvem: browser, arquivo, login nas ferramentas, trabalho com o notebook fechado. Os de sessão já estão no loop de quem escreve software: Cursor, Claude Code, Codex, Windsurf.

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ProgrammingDEV Community ·

Git SHA-256 migration: what the Git 3 proposal actually changes

Git's proposed SHA-256 default has prompted a fight over how much migration work stronger hashing should require. On October 1, GitHub and GitButler co-founder Scott Chacon called the plan a "costly mistake". For developers, the immediate question is whether a new repository format will work through the tools they already depend on. TL;DR Git's official proposal changes the default for new repositories, requires ecosystem readiness and gives no release date. SHA-1 support remains.

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ProgrammingDEV Community ·

Road to State Machines IV - But How Do We Let Data Influence Transitions Without Turning Every Value into Another State?

Our lifecycle now has one explicit transition table. For a valid order, it tells us: The operations consult that table before making a change. The code that lists available actions consults it too. But Part III ended with another requirement: Consider two orders. Both are paid, and both retain their captured payment records: Order Status Payment record Delivery address A PAID Present Supported B PAID Present Unsupported Both records satisfy our existing invariants.

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