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ISP Proxy vs Residential Proxy: What Actually Matters for Web Scraping?
I once spent nearly a week trying to fix a web scraper that, on paper, had absolutely no reason to fail. The target website wasn't using aggressive, visible defense walls. My script spaced out requests naturally, rotated common user agents, and used browser automation configured to mimic human interactions down to mouse movements. Yet, the results were an absolute nightmare. Some batches of requests would go through cleanly, while others immediately triggered CAPTCHAs or returned 403 Forbidden errors. Every single time I thought I had patched the logic, the failure rate climbed right back up. Like most developers, my default instinct was to assume the application layer was broken. I went down a rabbit hole optimization sprint checking request headers, browser fingerprints, cookies, and session persistence. Nothing explained the wild inconsistency until I noticed a strange clue: some proxy pools performed beautifully, while others crashed on the exact same codebase. The code wasn’t the issue. The culprit was a fundamental misunderstanding of proxy network architecture. Looking Beyond the IP Address: Enter the ASN For a long time, I treated proxies as interchangeable commodities. An IP address was just an IP address, and if one got blocked, you simply rotated to the next. Modern anti-bot solutions like Cloudflare, Akamai, and PerimeterX don't look at IPs in a vacuum. They analyze network layer characteristics, specifically the ASN (Autonomous System Number). An ASN is a unique identifier assigned to a network operator that defines who owns and routes an IP range. When your scraper hits a website, the target's security system looks up your ASN to check your network identity. If your traffic originates from a commercial hosting provider or data center ASN, it carries an automatic penalty score for sensitive endpoints. To build reliable systems, you have to move past basic rotation and understand the two core proxy frameworks that mask this identity: ISP Proxies and Resi
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Building an unofficial Dumpert client for Apple TV with Swift 6 and SwiftUI
Dumpert is a Dutch video site I've watched for years, but there's never been an Apple TV app, so I built one. DumpertTV is an unofficial, open-source tvOS client. Here's how it's put together and a few things that were more interesting than I expected. Disclaimer up front: this project is not affiliated with Dumpert or DPG Media B.V. It's an independent app that uses the public Dumpert API. The stack Swift 6 with strict concurrency ( complete mode) across every target SwiftUI for all UI, tvOS 18+ XcodeGen so the .xcodeproj is generated from a project.yml and never committed CloudKit , GroupActivities (SharePlay), Vision , AVKit , Swift Testing One actor for the network, one source of truth for the UI The whole networking layer is an actor . That makes per-request state like ETags and retry bookkeeping thread-safe without a single lock: actor DumpertAPIClient { private var etags : [ URL : String ] = [:] func fetch < T : Decodable > ( _ endpoint : APIEndpoint ) async throws -> T { // Exponential backoff on 5xx + network errors; honours 304 Not Modified. try await fetchWithRetry ( endpoint , attempt : 0 ) } } The UI reads from a single @Observable @MainActor repository injected through the SwiftUI environment — no Combine, no view models competing over the same state: @Observable @MainActor final class VideoRepository { private(set) var hotshiz : [ MediaItem ] = [] let apiClient : APIClientProtocol // protocol-backed for testing } ContentView () . environment ( videoRepository ) Views just read repository.hotshiz ; updates flow automatically. With Swift 6's strict concurrency on, the compiler kept me honest about every actor hop. Things that were trickier than expected tvOS focus + a top tab bar. Getting a Netflix-style hero carousel to behave with the focus engine took real care. It also made automating screenshots interesting — scripted remote input doesn't reliably drive the simulator, so I added #if DEBUG launch-argument hooks to jump straight to any tab/category f
科技前沿
Quantum Computing Is Having Its Public Market Moment
Quantinuum, a quantum computing startup, is losing millions. Investors want in anyway.
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Amazon develops a warehouse robot workers can speak to
Amazon has announced a new version of its fully autonomous warehouse robot, Proteus, that will can interact using language instead of code. The expanded capabilities come as part of a growing pivot toward automation as the e-commerce giant replaces its human workers with robots. Amazon says the AI-powered upgrade means its human employees can assign […]
科技前沿
This Streamer Has Convinced the Internet Guy Fieri Never Swallows Food on TV
A video creator known as Doctor Spaghetti has scrutinized hours of Diners, Drive-Ins and Dives to get to the bottom of an explosive culinary conspiracy theory.
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Zoona AI
Automated support that learns from docs + past conversations Discussion | Link
AI 资讯
Cursor Pro free for a year if you’re a student
my friend just told me about this and i had to share it immediately cursor is giving students 12 months of pro completely free. no credit card. just verify your .edu email and that’s it you get full access to gpt, claude, gemini… all the models. for a whole year. for free. that’s $240 you just keep in your pocket while everyone else is paying $20 a month wondering why their bank account looks sad takes like 2 minutes. go to cursor.com/students, throw in your .edu, pass the verification, done and if you graduated already, you probably know someone still in college who has no idea this exists. do them a favour link in the comments. seriously just go do it right now submitted by /u/NewMuffin3926 [link] [留言]
工具
Article: Architectural Change Cases: A Practical Tool for Evolutionary Architectures
Architectural change cases extend architecture decision record (ADR) thinking by evaluating how decisions may evolve over time. Change cases expose hidden assumptions and help teams estimate the reversibility and cost of change. By Pierre Pureur, Kurt Bittner
开发者
This App Makes Google TV Actually Usable
The app AT4K turns the messy Google TV interface into something closer to the Apple TV interface, making it cleaner, more customizable, and less frustrating to use.
产品设计
How I Bridged AWS Face Liveness to Expo with a Native Module
AWS Face Liveness has native SDKs for iOS and Android. That works well if you are building fully...
产品设计
AWS Replaces Fat-Tree Data Center Networks with Random Graph Theory, Cutting Routers by 69%
AWS disclosed that Resilient Network Graphs, a flat network architecture based on quasi-random graph theory, is now the default for most new data center builds. The design replaces fat-tree hierarchies with direct ToR-to-ToR mesh connections using passive optical ShuffleBoxes, cutting routers by 69%, boosting throughput by 33%, and reducing network power consumption by 40%. By Steef-Jan Wiggers
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Google Wallet ID passes will be available in select EU states this summer
The company is also introducing a new age verification process in partnership with a European bank.
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Ran gemma 4 12b on my 3090 yesterday and I think the local model game just changed
Got the gguf quantized version running about two hours after release and I genuinely wasn't expecting this from a 12b model. The multimodal stuff actually works, fed it screenshots of my codebase and it parsed the architecture better than most 70b models I've tested. The 256k context window is real and it doesn't fall apart at the edges like llama models do past 32k. Loaded a full repo into context, it tracked references across the whole thing. Single 3090 with q4 quantization runs at about 15 tokens per second which is totally usable for dev work. What gets me is the size range. The 12b sits in this sweet spot where you get strong reasoning without needing multi gpu. Tried the e4b on my laptop with 16gb ram, slower but functional. Already swapped it into my local coding pipeline. The function calling support means I can wire it into my toolchain without the janky workarounds I had before. Native audio input on the 12b is something I haven't touched yet but the implications for voice driven workflows are kind of insane. submitted by /u/Sharkkkk2 [link] [留言]
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Codegen to C: Native Binaries from Pascal (v2.18.0) | Codegen para C: binários nativos a partir de Pascal (v2.18.0)
Bilingual post · Post bilíngue Jump to: English · Português English {#english} Codegen to C: Native Binaries from Pascal (v2.18.0) Sprint 10 ( v2.18.0 ) closes the loop on CrabPascal's most ambitious feature: turning Pascal source into real native executables via C codegen — with string builtins that actually match the interpreter. The pipeline Pascal (.dpr/.pas) → AST → C source + stubs.c → gcc/clang → native binary run skips the last steps and executes in Rust. build-exe is for when you want an .exe or ELF on disk without carrying the CrabPascal runtime as a dependency. End-to-end example program NativeHello ; uses System . SysUtils ; begin WriteLn ( Trim ( ' Hello, native world! ' )); end . crab-pascal build-exe NativeHello.dpr ./NativeHello # or NativeHello.exe on Windows Expected output: Hello, native world! — no leading or trailing spaces. What Sprint 10 fixed Parser: Trim , Copy , Length , and friends are recognized as SysUtils builtins , not mistaken for type names starting with T . A denylist prevents hard-casts that produced invalid C. Codegen: Forward declarations for pascal_* helpers in generated C. WriteLn emits correct %s formats for string expressions. main returns 0 like a well-behaved C program. Tests: build_string_conformance_stdout_matches_run_when_toolchain_present runs only when gcc/clang is available — skipping cleanly in CI sandboxes without a compiler, failing loudly when a compiler is present but output diverges. cargo test --test run_build_parity stubs.c: shared runtime surface String functions implemented once in Rust for run mirror into stubs.c for native builds: // conceptual — see repo for full signatures int pascal_Length ( const char * s ); char * pascal_Trim ( const char * s ); Generated Pascal calls route through these instead of ad-hoc inline logic, keeping Sprint 5–8 string semantics intact in binaries. When build-exe is not enough yet Sprint 10 explicitly did not ship full OO, exception, or generics codegen parity — those appear
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I Stopped Writing Better Prompts and Started Counting What My Skills Couple To
Prompts rot. Captured failures compound. Most of the AI skills you are building are mostly prompt, which is why most of them will not survive the year. Not because the prompts are bad. A skill's value is maybe twenty percent instruction and eighty percent scar tissue, and only that second part lasts. The instruction rots the moment the thing it describes moves. Encode how your team deploys and it works until the pipeline changes. Then you are debugging a prompt at 2am, with less to go on than if you had written the script yourself. So before you build another one, stop asking whether the prompt is good. Ask what the skill is holding onto, and whether that thing sits still. A skill rots at the speed of what it touches A skill rots in proportion to how tightly it is coupled to things that move. Generic scaffolding leans on stable ground like a language or a convention, so it ages slowly. Domain logic wired to a codebase that gets refactored every quarter ages fast, no matter how good the prompt is. The difference is the dependency count. "Write a unit test in this style" depends on a language and a convention. Both barely move. It keeps working for years because nothing under it shifts. Real company-specific procedure is the opposite. File layouts. Service contracts. The one edge case in the billing flow. Each detail you pack in is a thread tied to something that gets refactored. Pack in enough of them and the skill is not a tool anymore. It is a liability with good intentions, and it fails silently, because a stale prompt does not throw. It quietly does the wrong thing. That is what the skill-library pitch gets backwards. Volume is not value. A hundred skills wired to a moving codebase is a hundred things to maintain. The only part that compounds is the scar One part of a skill does not rot. The captured failure. The five-line check you added after a model confidently reported a 41 percent dividend yield. The retry that refuses to fire twice so a flaky webhook cannot
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Shokz upgraded its open earbuds with better sound and a lighter design
Shokz has announced two new versions of its open earbuds. Like the original OpenDots One that launched in May 2025, the new Shokz OpenDots 2 and OpenDots Air are both designed to be worn clipped to the back of your ear with their drivers positioned to project sound toward your ear canals without blocking them. […]
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3 Things AI Secretly Hides from You 🤐
The chatbot is tricking me!!! 💬📜⌛ When you text a chatbot, it doesn’t actually remember who you are or what you said two minutes ago. The exact millisecond it finishes typing a response, its brain completely wipes clean. To pull off the illusion of a continuous, flowing conversation, the web application secretly copy-pastes the entire past chat history, bundles it up, and blasts that whole massive block of text back into the processor every single time you hit send. Your "chat session" is an illusion maintained entirely by an ever-growing stateless prompt wrapper. You aren't interacting with a growing, adapting mind; you are repeatedly gas-lighting a brand-new entity into believing it has been talking to you for an hour. Wait, I am the one training it ??? 🚦🚸🚲 AI models are inherently blind to context; a computer doesn't instinctively know that a specific cluster of raw pixel values represents a real-world object. It requires billions of examples to be manually labeled by a human mind before the math can understand it. Every time you click on squares containing "traffic lights," "crosswalks," or "bicycles" to unlock a website, you are acting as an unpaid data annotator. You are manually labeling complex, messy real-world data points that feed directly into the computer vision systems of autonomous vehicles. The grand paradox of modern cyber security is that we force humans to act like mechanical data annotators to prove they are not computers, all so that computers can learn how to perfectly impersonate humans. The supercomputer is stupider than a toddler... 🍓👶🏻🖥️ We assume AI read letters and words the same way human eyes scan a page. It doesn't—it is entirely alphabet-blind. Before text hits the AI's brain, a parser chops strings of text into numerical blocks called "tokens." For example, the word "strawberry" isn't seen by the model as ten distinct letters; it is compressed into numerical IDs representing chunked pieces like "straw" and "berry". Because it never s
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ACID vs BASE: What Database Guarantees Actually Promise
When people say a database is "ACID-compliant" or "eventually consistent," they are making promises about what happens when things go wrong — concurrent writes, crashes, network failures. ACID and BASE are the two vocabularies for those promises, and knowing the difference tells you what you can and cannot rely on. What ACID guarantees ACID is the contract that traditional transactional databases — PostgreSQL, MySQL/InnoDB, Oracle, SQLite — make about a transaction (a group of operations treated as one unit). The four letters: Atomicity : the whole transaction succeeds or none of it does. If a bank transfer debits one account but the credit fails, the debit is rolled back. There is no half-done state. Consistency : a committed transaction moves the database from one valid state to another, never violating its declared rules (constraints, foreign keys, types). It will not let you, say, leave a foreign key pointing at a row that does not exist. Isolation : concurrent transactions do not step on each other. The result is as if they ran one at a time, even when they actually ran in parallel. (In practice databases offer tunable isolation levels — from "read committed" to "serializable" — trading strictness for speed.) Durability : once the database says "committed," that data survives a crash or power loss. It has been written somewhere persistent, not just held in memory. The payoff is that you can reason about your data simply: after a successful commit, the world is exactly what you asked for. The cost is coordination, which gets expensive when data is spread across many machines. What BASE trades away BASE is the model many distributed and NoSQL systems adopt — think Cassandra, DynamoDB, or Riak — when they need to scale across many nodes and stay up through failures. The acronym is deliberately a chemistry pun on ACID, and it stands for: Basically Available : the system answers requests even during partial failures, possibly with stale or incomplete data rather tha
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How Git Actually Stores Your Code: Blobs, Trees, and Commits
Most people picture Git as a tool that records changes — a stack of diffs layered on top of each other. That mental model is wrong, and it makes Git feel mysterious. Git is really a small key-value database that stores snapshots, and once you see the four object types it uses, commands like reset , checkout , and rebase stop being magic. Git is a content-addressed object store Everything Git tracks lives in .git/objects as an object, and every object has an ID that is the hash of its own content. By default that hash is a 40-character SHA-1 digest (newer Git supports SHA-256). The same bytes always produce the same ID, so the ID is the content's address — change one byte and you get a completely different object. This is why Git data is effectively immutable: you never edit an object in place, you create a new one with a new name. You can look inside any object with git cat-file . The -t flag prints the type, -p pretty-prints the content: $ git cat-file -t 3b18e512 blob $ git cat-file -p 3b18e512 hello world There are exactly four object types: blob , tree , commit , and tag . A blob is just file contents — raw bytes, with no filename and no metadata. The blob for README.md knows nothing about being named README.md ; it only knows what's inside. A tree is a directory listing. It maps names to other objects: each entry has a mode (like a file vs. an executable vs. a subdirectory), a name, and the hash of either a blob (a file) or another tree (a subdirectory). Trees are how Git represents folder structure. Inspecting one shows exactly that: $ git cat-file -p HEAD^ { tree } 100644 blob a906cb... README.md 040000 tree fe8e3b... src A commit ties it together. A commit object points to exactly one top-level tree (the full state of your project at that moment), plus the hash of its parent commit (or parents, for a merge), the author and committer with timestamps, and the commit message. Running git cat-file -p HEAD shows these fields in plain text. Because each commit nam
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I built a Windows tool that turns screenshots into one searchable PDF — here's what I learned
For months I had the same annoying problem: folders full of screenshots I couldn't actually use. Lecture slides, PDFs I own, scanned pages — all just images . I couldn't Ctrl-F them, couldn't copy a line out, couldn't get my OS to index them. A picture of text is useless the moment you need to find something in it. So I built CapDrop to automate the whole chain on Windows. This is a write-up of how it works under the hood and the bugs that nearly broke me. The core idea You draw a capture box over a page, pick a page key (Page Down, arrow keys), set an interval, and walk away. CapDrop then: Captures each page on the interval Presses the page key for you to advance Auto-crops margins and toolbars out of every shot Runs OCR locally Binds everything into a single PDF with a real text layer The result is one document you can search, not a pile of images. The stack Electron for the app shell and capture/UI (I already had window management, hotkeys, and floating-bubble export working — no reason to rewrite). A Python OCR sidecar (RapidOCR) spawned as a child process. OCR runs 100% locally; nothing is ever uploaded. jimp for auto-crop, with a 12px safety pad so edge text never gets clipped. pdf-lib to bind the pages and inject the OCR text layer. The Electron + Python-sidecar split was a deliberate choice. People kept telling me to rewrite the whole thing in Python "for the OCR," but the Electron app already had everything except OCR. Adding a sidecar was a few hundred lines; a rewrite would've been months. The bug that cost me two days After adding the OCR pipeline, my global capture hotkey developed a 4-second delay on the first press. Cold, every time. I guessed wrong twice — thumbnail size, then a race condition. Both were dead ends. The only thing that actually found it was instrumenting the hot path with timing logs. The culprit: a fs.readFile of a tiny 749-byte settings.json on every hotkey press. On a cold start that read was taking 2–4 seconds — Windows Defender's