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<h1><strong> TLDR Dev <span id="date">2025-12-16</span></strong></h1>
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<strong>Essential user management features for startups (Sponsor)</strong>
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Startups need solid user management from day one: authentication (passwords, OAuth, magic links), authorization with role-based access control, profile management, and security essentials like MFA and session handling. These features directly impact conversion rates, reduce support tickets, and keep you compliant with data protection regulations.<p></p><p><a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fgo.clerk.com%2FvaA80AZ/3/0100019b271bc2ef-21948100-248f-438a-8a1f-6e8c78780cd7-000000/RQwLrgQBL3_FmP2MOcekz_41yfamZWVG2K0PTckOOd0=435" rel="noopener noreferrer nofollow" target="_blank"><span>This guide</span></a> breaks down what to prioritize based on your stage, when to use an auth provider versus building in-house, and how to avoid common pitfalls like insecure password storage or broken session management.</p>
<p>Critical reading if you're evaluating auth solutions or planning your user management architecture. <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fgo.clerk.com%2FvaA80AZ/4/0100019b271bc2ef-21948100-248f-438a-8a1f-6e8c78780cd7-000000/uhxbG00vtTgGeX9OEMJ4CJQrbYxXODvomCXSYfcA3UI=435" rel="noopener noreferrer nofollow" target="_blank"><span>Get the guide</span></a>
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<h1><strong>Articles & Tutorials</strong></h1>
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fengineering.fb.com%2F2025%2F12%2F15%2Fandroid%2Fhow-ai-transforming-secure-by-default-mobile-frameworks-adoption%2F%3Futm_source=tldrdev/1/0100019b271bc2ef-21948100-248f-438a-8a1f-6e8c78780cd7-000000/N7GNYXQ_T0Nu0V1y4ED6ZBxFp6lNcFOeOD4j4hf6iMI=435">
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<strong>How AI Is Transforming the Adoption of Secure-by-Default Mobile Frameworks (15 minute read)</strong>
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Developers can create secure-by-default features that integrate seamlessly into existing codebases by adhering to core design principles such as providing an API that closely resembles existing patterns, relying solely on public and stable APIs, and designing frameworks that cover broad bases rather than niche use cases. These design principles can be used to leverage AI to smoothly adopt frameworks at scale. The combination of thoughtful framework design and intelligent automation will be essential to protecting user data and maintaining trust at scale as code bases grow and security threats become more sophisticated.
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<strong>How a Kernel Bug Froze My Machine: Debugging an Async-profiler Deadlock (23 minute read)</strong>
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This dev encountered a persistent machine freeze on their Linux kernel when using async-profiler for QuestDB. After reproducing the issue in a QEMU virtual machine, they used GDB to trace the problem to a specific kernel bug within a `perf_events` subsystem function. This bug caused a self-deadlock when a high-resolution timer attempted to cancel itself while its callback was still executing, making all CPUs unresponsive.
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<strong>What Does a Database for SSDs Look Like? (10 minute read)</strong>
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Most relational databases were invented in the 90s and 00s, the era of spinning disks. Design decisions were made when I/O was slow and sequential I/O was orders of magnitude faster than random. This post looks at what would change and what would remain if we had to begin from scratch to build a new database in 2025.
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<strong>The `time` element should actually do something (2 minute read)</strong>
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The HTML 'time' element is supposed to be a semantic way to express the exact timestamp of a date, but no browser or assistive technology actually makes use of it, besides rendering it. It seems to be used by search engines to show date snippets in search results, but there aren't any real guidelines for using it. The time element is a good idea, but in practice, it feels like an unfulfilled promise of semantic HTML.
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<h1><strong>Launches & Tools</strong></h1>
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<strong>Shopify doubles down on AI in the latest large update to its Developer platform (Sponsor)</strong>
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The <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fwww.shopify.com%2Fnews%2Fwinter-26-edition-dev%3Futm_source=comms_paid%26utm_medium=newsletter%26utm_campaign=winter26edition-launch_Q425BACADO%26utm_content=tldrdev-v1/2/0100019b271bc2ef-21948100-248f-438a-8a1f-6e8c78780cd7-000000/Q_QsidAEC_T6b9zBzd-lx7eyxdF75ynWVep4hS3B5LA=435" rel="noopener noreferrer nofollow" target="_blank"><span>'26 Winter Edition</span></a> adds more advanced AI capabilities to Shopify: agents can create dev stores, scaffold apps, run GraphQL operations, and generate validated code across Admin, UI extensions, Liquid, and Hydrogen. Developers can ask questions in natural language and receive working, validated code with direct shopify.dev links. <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fwww.shopify.com%2Fnews%2Fwinter-26-edition-dev%3Futm_source=comms_paid%26utm_medium=newsletter%26utm_campaign=winter26edition-launch_Q425BACADO%26utm_content=tldrdev-v1/3/0100019b271bc2ef-21948100-248f-438a-8a1f-6e8c78780cd7-000000/V7Jj1HOJh6W-xy14lQH4jdVXFmgJvGcX9YNeP7GrZlM=435" rel="noopener noreferrer nofollow" target="_blank"><span>See what's new</span></a>
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<strong>Claude Mem (GitHub Repo)</strong>
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Claude-Mem is a Claude Code plugin that provides a persistent memory system by automatically capturing tool usage observations and generating semantic summaries. It injects this relevant context back into future sessions, allowing Claude Code to maintain knowledge continuity across projects.
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<strong>Metacode (GitHub Repo)</strong>
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Metacode provides a standard, Python-syntax-based language and a ready-made parser for machine-readable comments, similar to how various Python source code analysis tools interpret and manage special in-code annotations.
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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.theverge.com%2Fpodcast%2F844073%2Fstack-overflow-ceo-ai-coding-chatgpt-code-red-interview%3Futm_source=tldrdev/1/0100019b271bc2ef-21948100-248f-438a-8a1f-6e8c78780cd7-000000/iwF5-oIU_Hc5MUQ-XuxXOW8837NjhR64MwM-PoOvApA=435">
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<strong>Stack Overflow users don't trust AI. They're using it anyway (56 minute read)</strong>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
AI created an "existential moment" for Stack Overflow. In response, CEO Prashanth Chandrasekar led a pivot, turning the company into primarily an enterprise SaaS business providing AI-based solutions and establishing a data licensing operation with major AI labs. Despite over 80% of users wanting to use AI for code-related topics, only 29% trust it, so Stack Overflow banned AI-generated answers on its public platform while also launching AI Assist, which prioritizes its trusted human-curated content.
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<h1><strong>Quick Links</strong></h1>
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GraphQL, despite solving a niche problem like overfetching, often is a net negative in enterprise environments because its benefits are frequently redundant with existing BFFs, while introducing more complexities in implementation.
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Browser Score is a browser testing tool that quickly checks how many web platform features your browser recognizes and gives it a percentage score.
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<strong>It's Uncomfortable To Sit With “I Don't Know” (3 minute read)</strong>
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Human discomfort with admitting "I don't know" drives us to readily accept convenient, but not always true, certainty, especially from sources like AI, even when logic suggests these sources are unreliable on unfamiliar topics.
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<strong>Checkpointing the message processing (12 minute read)</strong>
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Checkpointing message processing in event-driven architectures is similar to save points in old video games.
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