开发者
Formula E’s new season is starting to look more like F1
The next season of Formula E will feature a new race format and three new race locations when it starts in December to go with the new Gen4 electric cars. The schedule released today by the FIA includes the Circuit of the Americas in Austin, the Brands Hatch circuit in Kent, and the Zandvoort circuit […]
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Why corporate AI super PACs spent $27 million on a local election
Hello and welcome to Regulator, the newsletter for Verge subscribers chronicling the misadventures of their favorite tech overlords and Washington swamp creatures. ("Favorite" is, of course, subjective.) Not a subscriber yet? Sign up here, especially if you want the hot scoop on quality Amazon Prime Day deals recommended by the wonderful humans of The Verge's […]
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You Don't Need Kubernetes to Monitor 20 Linux VMs
If you've ever tried to set up Prometheus by following the official getting-started path, you're likely to find a path that does not follow your infrastructure model. Out of the gate, page one mentions kube-prometheus-stack. Page two wants you to install a Helm chart, and page three assumes you already have a cluster running. The documentation for monitoring plain Linux servers is in there somewhere, but you have to dig for it. When you do find it, the tone suggests you are doing something slightly old-fashioned. If that sounds like your setup, the tooling is making this harder than it actually is. Monitoring a fleet of Linux VMs is fairly simple and has been for years. It is just obscured behind documentation that would prefer to sell you something bigger. Modern infrastructure tooling has quietly decided everyone runs Kubernetes. If you don't, the assumption is that you eventually will. Meanwhile, most real-world infrastructure still runs on VMs. TL;DR: Modern observability documentation often assumes you're running Kubernetes. Most small teams aren't. If you're managing a fleet of Linux VMs, node_exporter plus Prometheus gives you everything you need for infrastructure monitoring with a single lightweight agent and a straightforward deployment model. No cluster required. VMs are often the answer For most small businesses, running VMs instead of Kubernetes does not mean you failed to evolve. Most workloads under a certain scale perform better on VMs: One process per box, predictable resource limits, and the ability to ssh in and look at what's happening, which makes it easier to keep track of the infrastructure as a whole. They're cheaper, both financially and in the mental overhead of running them. Backups and snapshots are straightforward in a way stateful Kubernetes still isn't. There's no control plane that itself needs monitoring and upgrades and care. Kubernetes solves problems that mostly pertain to companies with dozens of engineers and hundreds of service
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Styling the Vertical - Achieving Parity
Note : This article is one of a series demonstrating building a React navigational component from scratch while considering accessibility through the process. The articles are accompanied by a GitHub repository with releases tied to one or more articles; each builds on the previous one until a fully implemented navigation component is complete. Each release and its associated tag contain fully runnable code for the article. The code discussed in this article is available in the release. and may be downloaded at release 0.9.0 . A page showcasing these base components may be run locally through this release. While code examples are written in JavaScript for brevity, all actual code is written in Typescript and targets React 19.x, all while using vanilla CSS. Examples use Next.js v16.x, which is not required to run the navigation component.] The design requirements for this release are available . -— Content Links Introduction Layout Appearance <nav / > Generic Styling Reimagining Focus and Hover Achieving Parity aria-current Refinements Summary Introduction With only one more release coming up and the horizontal layout styling complete, now is the time to focus on completing vertical layout styling. Most of the layout itself was completed in an earlier release and described in the article Laying it all out on the vertical . When styling a component, care must be taken to ensure parity with the information provided by screen readers through some aria attributes. For instance, a navigation component must set the aria-current="page" attribute on a link whose href points to the current page. In the example being shown, the link in question is the "by Era" link, under Find Your Next Story and Tales. ) While screen reader users hear which button or link is the item currently capturing focus, styling is needed to achieve the same for screen users. Visual styling is necessary to guarantee that visual and auditory/tactile users have the same information. Layout @layer system-c
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How to burst the AI bubble: Strike at its roots
Sci-fi author/tech journalist Cory Doctorow on his new book, The Reverse Centaur's Guide to Life After AI .
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FCC Commissioner Anna Gomez Will Fight for Press Freedom—Until Trump Fires Her
President Trump probably can’t get rid of her yet, but FCC commissioner Anna Gomez still checks her email every day to see if he has. Until then, she wants to stand up for the First Amendment.
AI 资讯
How to Build a Tool that Track Which World Cup Players Are Blowing Up on Social Media
Every World Cup there's a moment. Some player nobody outside their domestic league had heard of scores an absolute screamer in a knockout match, and by the time they've finished celebrating, their follower count is climbing like a rocket. I always found that fascinating, but I could never see it happening in real time. By the time the "X gained 3 million followers!" tweets show up, the surge is already over. So this tournament I built a little tracker that snapshots player follower counts on a schedule and shows me the growth curve as it happens. Here's how it works. Why the official APIs were a dead end My first instinct was to do this "properly" with official APIs. That died fast: Instagram's Graph API won't give you follower counts for accounts you don't own. TikTok's research API is academics-only and takes weeks of applications. X's API now starts at $100/month. I just wanted public follower counts — numbers anyone can see by opening the app. I didn't want a data partnership and a legal review. I ended up using SociaVault , which wraps the public profile data from each platform behind one API and one key. One request, one credit, JSON back. The shared client Everything runs through one tiny helper: // Node 18+ has fetch built in const API_KEY = process . env . SOCIAVAULT_API_KEY ; const BASE = " https://api.sociavault.com " ; async function sv ( path , params ) { const url = new URL ( BASE + path ); Object . entries ( params ). forEach (([ k , v ]) => url . searchParams . set ( k , v )); const res = await fetch ( url , { headers : { " X-API-Key " : API_KEY } }); if ( ! res . ok ) throw new Error ( ` ${ res . status } ${ await res . text ()} ` ); return res . json (); } Grabbing follower counts across platforms Each platform nests the count slightly differently, so I use fallback chains to stay defensive: async function instagramFollowers ( username ) { const data = await sv ( " /v1/scrape/instagram/profile " , { username }); const p = data . data ?. user ?? dat
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Why Your Ubuntu Laptop Lags, and How to Fix It for Free
My main work laptop is a Dell from 2017 with 8 GB of RAM. For weeks it had been crawling, freezing for whole seconds while I worked, and every so often it would simply switch itself off in the middle of a task. If you have ever lost unsaved work to a laptop that powers down on its own, you know exactly how frustrating that is. So I sat down and fixed it properly. The first thing I learned is worth saying up front: a slow, crashing laptop is usually two different problems wearing the same costume . Treat them as one and you will chase your tail. Separate them, and both become fixable. Everything below is free and copy-paste ready. It was tested on Ubuntu 24.04 LTS, and it applies to almost any older Linux machine. The honest disclaimer: Nobody can promise an old laptop will never lag. Software cannot add cores or memory that are not physically there. But you can absolutely stop the freezes and shutdowns completely and make everyday work feel smooth. That is the realistic, achievable goal. 0. Diagnose first, do not guess The biggest mistake is blindly applying "speed up Ubuntu" tweaks before knowing what is actually wrong. Spend five minutes measuring. Your lag has one of four common causes: heat, memory, disk, or a dying battery . Check temperature (the usual cause of random shutdowns): sudo apt install lm-sensors -y sudo sensors-detect --auto sensors Watch the Core temperatures while you work. If they spike past 90 to 100 °C right before a crash, you have a thermal problem, not a software one. Check memory (the usual cause of freezing): free -h sudo apt install htop -y htop In htop , watch the Mem and Swp bars during normal use. If memory pins near your limit and swap fills up, that thrashing is your freeze. Check disk space (a quiet killer): df -h / A root partition above 90% full makes Linux lag and turn unstable. Small SSDs fill up fast. Read the crash logs and battery health: # What went wrong during the previous (crashed) session journalctl -b -1 -p err --no-pa
AI 资讯
Building a Cross-Border Price-Comparison Agent: A Live Build Log
Why a build log (and not another tutorial) Every AI shopping tutorial shows the same thing: install the SDK, call a tool, ship. None of them show what happens when the API returns a price that is stale , the merchant is geo-blocked , or the agent has to reconcile four different currencies for a single shopper query. This is the build log of a working cross-border shopping agent — what we shipped, what broke, and the patterns we now use on every customer integration. What we are building A conversational agent that takes a product brief ("noise-cancelling headphones under SGD 400") and returns the three cheapest matching offers across SG, US, and JP retailers in real time , with currency conversion and shipping transparency. It uses BuyWhere MCP as the price-discovery layer (5M+ products, 6M+ offers, 100+ merchants, 5 currency modes). The architecture, after three iterations v1 — naive : agent calls search_products , picks top 3, returns them. Failed because the agent had no idea which offers were in stock or shippable to the user. v2 — offer-aware : agent calls search_products (with mode=offer ), then calls get_product on each to pull current price + shipping. Failed because round-trips to get_product added 8–11s of uncached latency on the first request. v3 — multi-region, currency-normalised (the one that ships): search_products with mode=offer and a regional filter Filter offers by in-stock + ships_to=user_region in the agent prompt For cross-region results, call find_similar to get the same product in the local catalog and pick the cheaper of (local offer + shipping) vs (foreign offer + conversion + shipping) Return three results with a one-line rationale per choice The result is a 1.2–2.4s response time and a 73% click-through on the top result, measured over 1,800 shopper queries last week. Three patterns we use on every integration now 1. Always pass mode=offer for shopping tasks mode=product returns the canonical product card (good for browsing and category p
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When WP admin shows a plugin update but WP-CLI doesn't — making automation see proprietary updaters
You open the "Updates" page in WordPress admin and see that Elementor Pro / ACF Pro / vk-blocks-pro have updates available. Then you run wp plugin update --all from your automation, and those exact plugins don't update. The asymmetry — "the admin sees it; WP-CLI doesn't" — traces back to how WordPress detects updates and how premium plugins layer proprietary update mechanisms on top of that. Here's the mechanism and how an automation tool can adapt. WordPress update detection is held by a transient cache WordPress doesn't decide "is there an update?" on every request. It caches the answer in the wp_options table as a transient, valid for up to 12 hours. The key entries: _site_transient_update_plugins — latest plugin versions _site_transient_update_themes — themes _site_transient_update_core — core If those transients are stale, even a version that just shipped on wordpress.org reads as "no update needed." WP-CLI consults the same transients, so stale cache = WP-CLI misses the update too . In one customer environment on ConoHa WING, we reproduced "version X is on wordpress.org, WP-CLI doesn't see it" directly. Trap 1 and fix 1 — force-refresh the transients before listing updates The first step was simple: at the start of a maintenance run, delete the three transients before querying the update list . def _flush_update_transients ( self , conn , wp_cmd , wp_path , site_name ): """ Delete update transients between DB backup and update step """ for t in ( " update_plugins " , " update_themes " , " update_core " ): conn . run ( f " { wp_cmd } transient delete { t } --path= { wp_path } " , warn = True , hide = True , ) Deleting the transients triggers a rebuild on the next wp plugin list --update=available . During the rebuild, WordPress reaches out to wordpress.org, so the returned list reflects the current release state . That handled the "we were just reading a stale cache" cases. But it didn't help with premium plugins. Trap 2 — with --skip-plugins , Pro updater filt
工具
GM installs robots at flagship EV factory after laying off 1,300 workers
US autoworkers union warns of robot automation as dark factory future looms.
AI 资讯
Query ধীর গতিতে চলছে, কিভাবে খুঁজে বের করবেন সমস্যাটা? (পর্ব ৩)
আমার colleague এখন প্ল্যান দেখতে পারছে। Scan types বুঝতে পারছে। Join types বুঝতে পারছে। Estimate আর actual এর gap দেখতে পারছে। BUFFERS ও দেখছে। কিন্তু সে প্রশ্ন করল। এসব দেখে কি করব? Step by step কোন পথে যাব? আমি বললাম। পাঁচটা step আছে। অর্ডার অনুযায়ী। পর্ব ২ এ আমি বলেছিলাম scan types, join types, estimate আর actual এর gap। BUFFERS কি। এবার আসি সমাধান এ। Diagnostic Workflow আপনার কাছে একটা slow query এসেছে। কিভাবে debug করবেন? এই পাঁচটা প্রশ্ন করুন অর্ডার অনুযায়ী। ৯০% slow query প্রথম বা দ্বিতীয় ধাপেই solve হয়ে যায়। ১. Deepest Seq Scan দেখুন Table বড় কি না? Filter selective কি না? Missing index থাকলে add করুন। আজই শুরু করুন যখন একটা Seq Scan দেখবেন big table এ, প্রথমে WHERE clause টা check করুন। Selective কি না? ৫% এর কম row return হওয়ার কথা? যদি তাই হয়, index missing। CREATE INDEX idx_name ON table(column) run করুন। ২. Join types দেখুন কোনো Nested Loop আছে কিন্তু দুই পাশেই বড় table? Hash Join force করুন বা ডান পাশে index add করুন। আজই শুরু করুন Nested Loop দেখলে ডান পাশের table এ index check করুন। যদি না থাকে, create করুন। Index থাকা সত্ত্বেও planner Nested Loop use করছে? SET enable_nestloop = off temporarily disable করে দেখুন। Hash Join আসবে কি না। ৩. Row estimates দেখুন Estimate vs actual ১০x এর বেশি difference? ANALYZE table দিন বা predicate rewrite করুন। আজই শুরু করুন rows=1 estimate কিন্তু rows=100000 actual দেখলে ANALYZE tablename run করুন। Statistics refresh হবে। তারপর plan আবার দেখুন। যদি তাও না আসে, WHERE clause rewrite করুন। Function call থাকলে remove করুন। Type mismatch থাকলে fix করুন। ৪. BUFFERS add করুন কোনো node এ অনেক disk reads? Caching investigate করুন। আজই শুরু করুন EXPLAIN (ANALYZE, BUFFERS) run করে দেখুন shared read high কোথায়। সেই node টাই bottleneck। Index add করলে reads কমবে। Pre-warm cache করতে পারেন। Data pre-load করতে পারেন। ৫. Sorts আর hashes দেখুন কোনো spill-to-disk আছে? work_mem raise করুন বা sort eliminate করুন। আজই শুরু করুন Plan এ external merge Disk: 421MB দেখলে spill-to-disk হয়েছে। SET work_mem = '256MB' temporarily rais
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Patreon CEO Jack Conte on supporting artists in the AI slop era
Today, I’m talking with Jack Conte, the CEO of Patreon. Jack last joined me on the show almost exactly five years ago, in the summer of 2021, and a lot has changed on the internet and in the creator landscape since then, so I was very excited to talk to him again, especially since his […]
产品设计
Lucid Motors’ new CEO cuts 18% of staff to ‘simplify the company’
The company is also eliminating a production shift at its Arizona factory to align "production plans with anticipated demand."
安全
Klue hack results in data breach at several cybersecurity firms
Huntress, HackerOne, Jamf, Recorded Future, and Tanium are among the cybersecurity companies that had data stolen following an earlier breach at market research firm Klue.
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Clean Architecture in .NET 8: A 2026 Starter Template with 4 Projects, EF Core, and JWT Auth
I joined a team where the controller was 800 lines long, the business rules were scattered between the controller and the DbContext , and "to run the tests, spin up a SQL Server in Docker" was a sentence I heard every week. The fix was Clean Architecture. The argument I had with the team lead was about how to actually structure it. We argued for two weeks. Then I built this template so the next person wouldn't have to. This is the Clean Architecture .NET 8 starter template I wish someone had handed me on day one. Four projects, strict dependency direction, domain entities that own their own invariants, and an Application layer you can unit test with Moq — no database required. The whole repo is on GitHub , MIT-licensed, runs with dotnet run , and ships with xUnit tests, JWT auth, Swagger, Docker, and CI. This post is the explanation of why each project exists, what goes in it, and what I learned the hard way about getting Clean Architecture right in .NET. The problem Clean Architecture solves The naive way to build a .NET Web API is one project, one folder structure, and "everything talks to everything": MyApp/ Controllers/ ProductsController.cs ← HTTP stuff OrdersController.cs ← HTTP stuff + business rules Services/ ProductService.cs ← business rules + DbContext.SaveChanges Data/ AppDbContext.cs ← EF Core, entities Models/ Product.cs ← POCO with public setters This works for the first 1,000 lines. By 5,000 lines, the controller is doing five things at once. By 10,000, "to test this, I need a database" is the answer to every test question, and your CI takes 20 minutes because every test run spins up SQL Server. Clean Architecture says: separate the business rules from the HTTP boundary, separate the database from the business rules, and enforce it with project references. A controller is allowed to call a service. A service is allowed to call a repository. A repository is allowed to know about EF Core. Nothing is allowed to know about anything "above" it in the chai
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Detect AI-Generated PDFs: What Works and What Does Not
Originally published at htpbe.tech . The version on htpbe.tech stays in sync with the latest detection algorithm — refer to it for the canonical text. Accounts payable teams are receiving receipts generated by ChatGPT plugins. HR platforms are seeing payslips rendered by Python scripts. Insurance claims contain repair estimates that no shop ever issued. The documents look correct. The logos match. The numbers are plausible. The question is: what can actually be detected, and what cannot? The honest answer requires separating two things that are often confused under the phrase “AI-generated document detection.” Two distinct problems called "AI-generated document detection" When people ask how to detect an AI-generated document, they usually mean one of two distinct things: Content classification asks: was the text in this document written by an AI language model? This is what tools like GPTZero and Turnitin’s AI detector do. They analyze writing style, token probability distributions, and linguistic patterns to estimate whether a human or a model produced the text. Structural forensics asks: was this PDF file generated by a real institutional system, or did it come from a headless browser, a PDF library, or a consumer tool? This is what HTPBE does. It reads the binary structure of the file — producer metadata, xref patterns, font embedding, object numbering — and checks whether those patterns match how legitimate institutional software generates documents. These are not the same problem. A document can contain AI-written text and still come from a real corporate system. A document can contain entirely human-written text and still have been rendered by Puppeteer an hour ago. The structural check and the content check answer different questions. HTPBE does structural forensics. It does not classify text. This article explains what that distinction means in practice, what the structural approach reliably catches, and where its limits are. What structural forensics detec
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Optimizing Django ORM Queries: A Practical Guide to select_related and prefetch_related
1. Introduction Django's ORM is one of its greatest strengths. It abstracts away raw SQL, lets you express database operations in clean Python, and gets you productive fast. But that convenience comes with a hidden cost: if you're not deliberate about how you fetch related objects, you'll silently generate far more queries than you intend — and you won't notice until your app slows to a crawl in production. The most common culprit is the N+1 query problem : a pattern where fetching a list of N objects triggers an additional query for each one, resulting in N+1 total round-trips to the database. At ten rows it's invisible. At ten thousand rows, it's a disaster. Django provides two tools to fix this: select_related and prefetch_related . This article explains how each one works internally, when to use which, and how to combine them effectively — with before/after examples and real query counts throughout. 2. Understanding the N+1 Problem Consider a simple blog with posts and authors. You want to render a list of posts, showing each post's title and its author's name. Models: # models.py from django.db import models class Author ( models . Model ): name : str = models . CharField ( max_length = 100 ) class Post ( models . Model ): title : " str = models.CharField(max_length=200) " author : Author = models . ForeignKey ( Author , on_delete = models . CASCADE , related_name = " posts " , ) The naive approach: # views.py from django.db import connection from .models import Post def list_posts () -> None : posts = Post . objects . all () # Query 1: fetch all posts for post in posts : print ( f " { post . title } by { post . author . name } " ) # ^^^ Query 2, 3, 4, ... N+1: one per post For 100 posts, this produces 101 queries . Django lazily fetches post.author the first time you access it on each object. Each access hits the database separately. You can verify this with django.db.connection.queries (requires DEBUG = True ): from django.db import connection , reset_queries
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Building an NES Emulator in C: Part 1 – Emulating the 6502 CPU
Over the course of a few posts, I will be constructing an NES emulator that will allow you to play NES ROMs. Today’s post is the first in this series, where I will be walking through the process of emulating the CPU the NES used, the MOS 6502. STRUCTURE The 6502 has 6 primary registers we need to emulate in our program. The A register is the accumulator, which is 1 byte long The X register is an index register, which is also 1 byte long The Y register is another index register, also 1 byte long The Program Counter is 2 bytes long, allowing for accessing 65536 memory locations The Stack Pointer is 1 byte long, allowing a 256 byte stack The P register is a status register that is 1 byte long, containing the CPU status flags Below is the struct I used for the 6502 typedef struct { uint8_t A ; uint8_t X ; uint8_t Y ; uint16_t pc ; uint8_t S ; uint8_t P ; } cpu_6502 ; MEMORY The 6502 can read up to 64kb of memory thanks to the 2 byte long program counter. For my implementation, the memory is just a simple uint8_t array declared like so: uint8_t memory[65536] = {0}; This just implements an array of 65536 bytes that we will load programs into, that the CPU will then step through. However, we need to have a function that is able to decode the commands. OPCODES An opcode (operation code) is a number that represents an instruction for the CPU. The 6502 has 56 distinct (useful) opcodes I will be emulating today. A full list of the opcodes can be found in this handy little table. Since there are so many opcodes, I will not go through them all. The full code can be found in my GitHub repo here: https://github.com/benjaminavachon/6502-emulator Here we can discuss a few of the operations so you can get a feel for what they do. The first one we will discuss is very simple. It is LDA; it simply loads the piece of data after the opcode stored in memory into the A register and increments the program counter to the next memory address. A simple example of this would be: LDA 0x05 This i
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Power BI Data Modeling Unleashed: Master Schemas, Relationships, and Joins for High-Performance Reporting
Whether you're brand new to Power BI or just getting started with data analytics, this guide walks you through everything you need to know about data modeling — from how tables connect, to the schemas that make your reports fast and reliable. What Is Data Modeling in Power BI? Imagine you have three spreadsheets: one with your customers , one with your products , and one with your sales transactions . Individually, each table tells you something. But together, they can tell you which customer bought which product, when, and for how much . That's exactly what data modeling is: the process of organizing your data tables and defining how they relate to each other so Power BI can combine them into meaningful reports and dashboards. A data model in Power BI has three core building blocks: Tables — your data sources (Excel files, databases, CSVs, cloud services, etc.) Relationships — the links between tables that tell Power BI how data connects Measures & Calculations — formulas (in DAX) that compute totals, averages, and other insights A well-designed data model is the difference between a report that loads in seconds and one that takes forever. It's also what keeps your numbers accurate and your dashboards easy to use. Why Does Data Modeling Matter? Here's a simple analogy: a city without roads is just a collection of buildings. Data modeling is the road system that lets you travel between your tables. Without a good data model: Your visuals may show incorrect or duplicated numbers Filters in one chart won't affect another Reports will be slow and hard to maintain With a good data model: Clicking on a customer in one visual automatically filters every other visual Calculations are accurate and consistent You can easily add new data sources without rebuilding everything Types of Tables: Facts vs. Dimensions Before diving into schemas and relationships, you need to understand the two types of tables that make up most Power BI models. Fact Tables A Fact table stores the ev