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<div style="display: none; max-height: 0px; overflow: hidden;">Anthropic's Claude Skills is a new feature that enables Claude to perform specific tasks more effectively by using folders </div>
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<h1><strong> TLDR Dev <span id="date">2025-10-17</span></strong></h1>
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<h1><strong>Articles & Tutorials</strong></h1>
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fblog.pixelmelt.dev%2Fkindle-web-drm%2F%3Futm_source=tldrwebdev/1/01000199f1da89e1-60d73a8c-4c4c-41e2-9ac9-b45100716deb-000000/bDYdRZkxTpqSAOofOSYNhtm__p0RmV4ILnTaXQz_xJM=426">
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<strong>How I Bypassed Amazon's Kindle Web DRM Because Their App Sucked (6 minute read)</strong>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
This dev purchased an ebook from Amazon but was frustrated by the buggy Kindle app and the inability to download the book for offline reading or use with other reader apps. They reverse-engineered Amazon's web DRM, fighting through multiple layers of obfuscation, including randomized alphabets and fake font hints. The solution involved pixel-perfect matching and perceptual hashing to decode the glyphs and reconstruct the book's content, resulting in a tool that can download purchased books and reconstruct them into perfectly formatted EPUB files.
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fciamweekly.substack.com%2Fp%2Fcredential-stuffing%3Futm_source=tldrwebdev/1/01000199f1da89e1-60d73a8c-4c4c-41e2-9ac9-b45100716deb-000000/Eu1QI7uraf3T9nby4j3_WSWNF4SnxIZjChGSiRtA_b0=426">
<span>
<strong>Credential Stuffing (12 minute read)</strong>
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Credential stuffing is an automated attack that uses stolen username-password pairs from data breaches to gain unauthorized access to user accounts on other services. Defending against this requires a layered approach that combines strategies like multi-factor authentication, breached password detection, rate limiting, device cookies, behavioral analysis, CAPTCHAs, and risk-based authentication.
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fwww.unkey.com%2Fblog%2Fserverless-exit%3Futm_source=tldrwebdev/1/01000199f1da89e1-60d73a8c-4c4c-41e2-9ac9-b45100716deb-000000/fB936B5KzqsDEcAeNhFzyzNrQDRECFT4RCYgEMINadY=426">
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<strong>Why we're leaving serverless (9 minute read)</strong>
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Unkey moved from Cloudflare Workers to stateful Go servers to overcome performance limitations and simplify their architecture. The serverless environment's lack of persistent memory forced complex caching workarounds and data pipeline overhead, resulting in high latency. Switching to Go servers improved performance by 6x, removed these complexities through in-memory batching, and allowed for self-hosting.
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<h1><strong>Opinions & Advice</strong></h1>
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fblog.gingerbeardman.com%2F2025%2F10%2F11%2Fhow-to-tame-a-user-interface-using-a-spreadsheet%2F%3Futm_source=tldrwebdev/1/01000199f1da89e1-60d73a8c-4c4c-41e2-9ac9-b45100716deb-000000/cVlurbeb8BUbg90metEj8PiEoxgDMl5Avhb-Bh5Qomk=426">
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<strong>How to tame a user interface using a spreadsheet (6 minute read)</strong>
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Spreadsheets are a powerful, accessible user interface design tool. They allow designers to focus on layout, positioning, and hierarchy without the distractions of content and style.
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<strong>Most of What We Call Progress (13 minute read)</strong>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Over time, good software engineers shift from valuing cleverness and complexity to prioritizing clarity and stability. True personal perspective progress is less caring about new technologies and more about perspective, teamwork, and simple solutions.
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<strong>Hacker News - The Good Parts (5 minute read)</strong>
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Hacker News prioritizes intellectually curious content, fosters a self-moderating community guided by two human moderators, and promotes discussions that are informative and surprising. The platform encourages humility and focuses on delivering signal over noise, making it a unique social network for intellectual growth.
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<h1><strong>Launches & Tools</strong></h1>
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<strong>Claude Skills: Customize AI for your workflows (3 minute read)</strong>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Anthropic's Claude Skills is a new feature that enables Claude to perform specific tasks more effectively by using folders containing instructions, scripts, and resources. Claude automatically selects and loads only the relevant skills. Skills are composable, portable across Claude platforms, and have support for executable code for complex tasks.
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<strong>Cloudflare Sandbox SDK (Website)</strong>
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Cloudflare Sandboxes provide secure, sandboxed containers for executing commands, managing files, and running services. They support long-running processes, real-time streaming of output, public URLs for exposed ports, a code interpreter, and filesystem access.
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<strong>Hyperflask (GitHub Repo)</strong>
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Hyperflask is a full-stack Python framework built on Flask. It has a component system, file-based routing, and pre-built UI components. Hyperflask supports both backend-driven interactive apps and static site generation, providing architecture flexibility.
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<div style="text-align: center;"><strong><h1>Miscellaneous</h1></strong></div>
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fwww.planetary.org%2Farticles%2F4000-gone-inside-nasas-brain-drain%3Futm_source=tldrwebdev/1/01000199f1da89e1-60d73a8c-4c4c-41e2-9ac9-b45100716deb-000000/XZu0VnFI42wnwwKBWIMyf04kGURDlS4zpSwvh9VipcY=426">
<span>
<strong>4,000 gone: Inside NASA's brain drain (12 minute read)</strong>
</span>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Budget cuts have caused roughly 4,000 NASA employees to leave in the past six months, leading to a huge brain drain that threatens the agency's future. Former NASA scientists describe the departures as catastrophic, citing a loss of expertise, community, and the destruction of NASA's identity.
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fwww.stateof.ai%2F%3Futm_source=tldrwebdev/1/01000199f1da89e1-60d73a8c-4c4c-41e2-9ac9-b45100716deb-000000/fJyaIZ4qyXzCtQsvEdYn_pffXIZrnOip4ayxQe0_FHY=426">
<span>
<strong>State of AI Report 2025 (3 minute read)</strong>
</span>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
The State of AI Report 2025 covers research, industry, politics, safety, and a new survey of AI practitioners. This year's report shows more competition in AI development, AI's emergence as a scientific collaborator, and the acceleration of commercial traction for AI tools. There's also more widespread AI usage among professionals, along with large datacenter buildouts to support AI workloads.
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<div style="text-align: center;"><span style="font-size: 36px;">⚡</span></div></div>
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<h1><strong>Quick Links</strong></h1>
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Felixir-lang.org%2Fblog%2F2025%2F10%2F16%2Felixir-v1-19-0-released%2F%3Futm_source=tldrwebdev/1/01000199f1da89e1-60d73a8c-4c4c-41e2-9ac9-b45100716deb-000000/vq1WeKI-OMpWVh_mxd3ts9zMJWDHTkKZRlZIT_KQdm0=426">
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<strong>Elixir v1.19 released (10 minute read)</strong>
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