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<div style="display: none; max-height: 0px; overflow: hidden;">If you’re working in tech, you should own a graph as a critical unit of responsibility. This practice helps focus on and track progress for problems </div>
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<h1><strong> TLDR Dev <span id="date">2025-12-10</span></strong></h1>
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<strong>Want to build the infrastructure powering frontier labs? Join Fluidstack to turn bare metal into gold (Sponsor)</strong>
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Fluidstack recently announced a <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fwww.fluidstack.io%2Fabout-us%2Fblog%2Ffluidstack-selected-by-anthropic-to-deliver-custom-data-centers-in-the-us%3Futm_source=newsletter%26utm_medium=email%26utm_campaign=bulletin/1/0100019b083d2778-4b3f3082-0206-42d8-ad15-0d787a924fbb-000000/MTxxHTdQ5NX_X3G9zPENJw7xwELBfKn5Oybv66NER94=435" rel="noopener noreferrer nofollow" target="_blank"><span>$50B AI infrastructure deal with Anthropic</span></a>. They deploy compute at speed and scale for frontier labs -- and they're hiring for <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fcareers.fluidstack.io%2Fjobs%3Futm_source=web%26utm_medium=paid_ad%26utm_campaign=hiring%26utm_term=tldr_tech/3/0100019b083d2778-4b3f3082-0206-42d8-ad15-0d787a924fbb-000000/A8UNcdWi-cvVnNeU5CdcJrXXnbJB581hnEGhjV5zDoQ=435" rel="noopener noreferrer nofollow" target="_blank"><span>50+ roles</span></a> in San Francisco, New York, Austin, and London:
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<li>FDE / MTS: Manage the clusters behind the next AI breakthrough. </li>
<li>Data Center Specialists: Build gigawatt-scale infra for frontier labs.</li>
<li>Business Development: Take the steering wheel and drive deployments at speed.</li>
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<p>👉 This is your chance to <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fcareers.fluidstack.io%2Fjobs%3Futm_source=web%26utm_medium=paid_ad%26utm_campaign=hiring%26utm_term=tldr_tech/4/0100019b083d2778-4b3f3082-0206-42d8-ad15-0d787a924fbb-000000/rMfBBy-tKoIF7x8XoBhXJt9fiBbbMcSF_WmTlBflNAI=435" rel="noopener noreferrer nofollow" target="_blank"><span>join the Fluidstack crew</span></a> and play a major role in the AI transition.</p>
<p><a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fcareers.fluidstack.io%2Fjobs%3Futm_source=web%26utm_medium=paid_ad%26utm_campaign=hiring%26utm_term=tldr_tech/5/0100019b083d2778-4b3f3082-0206-42d8-ad15-0d787a924fbb-000000/-F2abGKagl0du_MSPOGlq-W7GIpYd6NWGYPAchJy6mQ=435" rel="noopener noreferrer nofollow" target="_blank"><span>Check out all open positions</span></a> 🚀
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<strong>Why frozen test fixtures are a problem on large projects and how to avoid them (8 minute read)</strong>
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Test fixtures often become "frozen" in large software projects because modifications risk breaking thousands of unrelated tests that make implicit assumptions about the data. The recommended solution is to write highly focused tests that assert only the specific property they intend to verify, rather than comparing entire data structures.
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<strong>Background Coding Agents: Predictable Results Through Strong Feedback Loops (8 minute read)</strong>
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Spotify's background coding agents use verification loops to stay on track. Independent verifiers, like Maven, build systems and tests that run automatically and give incremental feedback. An LLM judge also vetoes PRs when agents get too creative and drift from their prompts.
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<strong>Own A Graph (4 minute read)</strong>
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If you're working in tech, you should "own a graph" as a critical unit of responsibility. This practice helps focus on and track progress for important, multi-quarter problems, making sure your work is directed towards meaningful outcomes. Graphs are the most powerful tool for concisely communicating impact.
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<strong>If You're Going to Vibe Code, Why Not Do It in C? (9 minute read)</strong>
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Vibe coding is effective. However, traditional programming languages are primarily designed for human readability and convenience, not machine needs. As a result, it's worth exploring "vibe-oriented programming languages" that would prioritize machine ergonomics and potentially generate low-level code instead.
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<h1><strong>Launches & Tools</strong></h1>
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<strong>Before you pick an AI prototyping tool, answer one question (Sponsor)</strong>
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Most teams ask "Which tool is best?" The better question: "Which approach gets us from idea to collaboration fastest?" <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fmiro.com%2Fresources%2Fai-prototyping-landscape-guide%2F%3Futm_campaign=glb-26q4-nsp-wp-c3_o2-prototypes_product_guide%26utm_source=tldr%26utm_medium=paidmedia%26utm_content=sponsorship%26src=-tldr_glb/2/0100019b083d2778-4b3f3082-0206-42d8-ad15-0d787a924fbb-000000/Y1mxMJOF5JxLHs6Wg9AQ3GdmJEt3WVzlp4nuZG5-LQI=435" rel="noopener noreferrer nofollow" target="_blank"><span>Miro's AI prototyping landscape guide</span></a> provides a requirement question set, decision framework, and evaluation scorecard so you can pick the tools that actually match your needs. <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fmiro.com%2Fresources%2Fai-prototyping-landscape-guide%2F%3Futm_campaign=glb-26q4-nsp-wp-c3_o2-prototypes_product_guide%26utm_source=tldr%26utm_medium=paidmedia%26utm_content=sponsorship%26src=-tldr_glb/3/0100019b083d2778-4b3f3082-0206-42d8-ad15-0d787a924fbb-000000/_MK42xmmuvwIQIQzqxOvquY_qvBoF8jvozw51H7O3j4=435" rel="noopener noreferrer nofollow" target="_blank"><span>Get the guide</span></a>
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<strong>Introducing: Devstral 2 and Mistral Vibe CLI (6 minute read)</strong>
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Mistral AI has launched Devstral 2 and Devstral Small 2, its next-generation open-source agentic coding models, along with the Mistral Vibe CLI for end-to-end code automation. Devstral 2 (123B) is a state-of-the-art model establishing new benchmarks for open-weight code agents. The Mistral Vibe CLI provides an open-source command-line interface that uses Devstral models to autonomously explore, modify, and execute changes across entire codebases.
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<strong>Durable Streams (GitHub Repo)</strong>
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Durable Streams is an open protocol that provides real-time sync to client applications. It supports catch-up reads and live tailing. The protocol works anywhere HTTP works, and it is built on standard HTTP with no custom protocols. Durable Streams is built for production scale. It complements backend streaming systems by reliably streaming data to client applications.
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<strong>Streamdown (GitHub Repo)</strong>
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Streamdown is a drop-in replacement for `react-markdown` specifically engineered to handle the unique challenges of streaming Markdown content from AI models. It fixes issues like incomplete or unterminated Markdown blocks. Streamdown supports GitHub Flavored Markdown, LaTeX math rendering, Mermaid diagrams, and Shiki code highlighting.
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Fate is a modern data client for React and tRPC that simplifies data fetching and state management. It combines features like view composition, normalized caching, data masking, and Async React capabilities with tRPC's type safety.
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<div style="text-align: center;"><strong><h1>Miscellaneous</h1></strong></div>
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Stock macOS can be inefficient and disruptive. To regain a frictionless workflow, this dev re-engineered macOS to reduce visual searching and manual interaction. This was done by using Aerospace for deterministic window management, Tmux for streamlined development, modal editing for text manipulation, and tools like Vimium and Homerow for keyboard-driven navigation across the browser and OS.
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This post introduces the goal of writing a small Cheat Engine clone in Rust to understand how the original tool functions by replicating its tutorial steps. The first step focuses on learning to enumerate active processes, opening them, and retrieving their module names programmatically. This is done through Windows API functions like `EnumProcesses`, `OpenProcess`, `EnumProcessModules`, and `GetModuleBaseNameA` while managing Rust's `unsafe` code.
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<h1><strong>Quick Links</strong></h1>
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After two years, this dev's company switched from the Shape-Up software development methodology because its rigid 6-week cycles and project size mismatch no longer suited their needs for flexibility and a clearer product direction.
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Django 6.0 introduces a host of new features, including template partials, a built-in tasks framework, Content Security Policy (CSP) support, and a modernized email API.
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React's new “Async React” combines five primitives to handle coordination automatically: `useTransition` tracks async work, ‘useOptimistic` makes UI instant (checkboxes toggle before server responds), Suspense handles loading, use() replaces `useEffect` for data fetching, and `useDeferredValue` keeps inputs responsive.
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Downdetector is a service built to monitor outages, but it experienced downtime itself during a Cloudflare outage.
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fdylanbeattie.net%2F2025%2F12%2F08%2Fso-you-want-to-speak-at-software-conferences.html%3Futm_source=tldrdev/1/0100019b083d2778-4b3f3082-0206-42d8-ad15-0d787a924fbb-000000/NqKoMfzwzqZG3tVrjkDylTfsfBAXzYbWZKMeynwnHuk=435">
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<strong>So You Want To Speak At Software Conferences? (9 minute read)</strong>
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The journey to becoming a software conference speaker begins by developing and refining unique talks at local user groups to practice, then progressing to community conferences to be seen and build a professional network.
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