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<div style="display: none; max-height: 0px; overflow: hidden;">Increasing code writing speed with AI actively worsens software delivery by creating inventory and overwhelming non-bottleneck stages </div>
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<h1><strong> TLDR Dev <span id="date">2026-03-18</span></strong></h1>
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<strong>Edge.js (12 minute read)</strong>
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<br>
<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Edge.js is a new JavaScript runtime designed to safely run Node.js workloads for AI and Edge computing. It differentiates itself from other edge runtimes by preserving full Node.js compatibility, isolating unsafe system calls and native modules through WebAssembly (WASIX) while running the JavaScript engine natively. This architecture allows existing Node.js applications and native modules to run unmodified in a secure, sandboxed, serverless environment.
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<span>
<strong>Crust (GitHub Repo)</strong>
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<br>
<br>
<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Crust is a beta-quality, TypeScript-first, Bun-native CLI framework that uses composable modules to build command-line applications.
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<div style="text-align: center;"><span style="font-size: 36px;">🎁</span></div></div>
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<div style="text-align: center;"><strong><h1>Miscellaneous</h1></strong></div>
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<span>
<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fengineering.fb.com%2F2026%2F03%2F17%2Fdeveloper-tools%2Franking-engineer-agent-rea-autonomous-ai-system-accelerating-meta-ads-ranking-innovation%2F%3Futm_source=tldrdev/1/0100019d00a25e1f-dadf9647-e725-4584-a109-4b4c2843e3ca-000000/iLJp27hs99gIH0eudjYWxic_Mq_3OZBj8rCFADLPNIk=449">
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<strong>Ranking Engineer Agent (REA): The Autonomous AI Agent Accelerating Meta's Ads Ranking Innovation (10 minute read)</strong>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Meta's Ranking Engineer Agent (REA) is an autonomous AI agent designed to accelerate ads ranking innovation by managing the entire machine learning experimentation lifecycle for its ads ranking models. REA overcomes challenges like long-duration workflows and generating diverse hypotheses by using a hibernate-and-wake mechanism and a dual-source hypothesis engine, all within a three-phase planning framework. It operates with minimal human intervention, autonomously handling tasks, debugging failures, and adapting within predefined guardrails, with human oversight primarily at strategic decision points and for budget approvals.
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<span>
<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fblog.logrocket.com%2Fsplitting-across-ai-agents%3Futm_source=tldrdev/1/0100019d00a25e1f-dadf9647-e725-4584-a109-4b4c2843e3ca-000000/1nKvj8zEr3C3TQlhlouV8jwrftdQWkqVqFtBQKfHS-4=449">
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<strong>Does splitting work across AI agents actually save time? I tested it (6 minute read)</strong>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Five multi-agent setups were benchmarked on the same task. Cursor subagents won (12 min, all tests passing), Agent Teams cut cost 70% vs solo, and the OpenAI SDK finished in 90 seconds for $0.009 but failed every single test because the agent didn't read enough of the codebase before writing code. More agents only helps when the task genuinely parallelizes, and agents can agree on interfaces before work starts.
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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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<strong>KIP-1150: Diskless Topics approved for Apache Kafka (Blog) (Sponsor)</strong>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Authored by 8 Aiven engineers, KIP-1150 introduces Diskless Topics — messages go directly to object storage like S3 or GCS, making broker disks optional. A big step toward cloud-native Kafka. <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Faiven.io%2Fblog%2Fkip-1150-accepted-and-the-road-ahead%3Futm_medium=sponsored%26utm_campaign=core_service_inkless%26utm_content=tldr-kip-1150/1/0100019d00a25e1f-dadf9647-e725-4584-a109-4b4c2843e3ca-000000/4e0EgeYS1J3P1ywb4a0bh6icue9n8OOdciLuhB4BOtc=449" rel="noopener noreferrer nofollow" target="_blank"><span>Learn more here.</span></a>
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Frandomascii.wordpress.com%2F2018%2F01%2F07%2Ffinding-a-cpu-design-bug-in-the-xbox-360%2F%3Futm_source=tldrdev/1/0100019d00a25e1f-dadf9647-e725-4584-a109-4b4c2843e3ca-000000/Moi0h1M6KXTpScPN0fABITnBisl0UcVu6awarixcssY=449">
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<strong>Finding a CPU Design Bug in the Xbox 360 (8 minute read)</strong>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
A critical design bug was discovered in the Xbox 360 CPU where a special prefetch instruction (xdcbt) could cause memory corruption even when only speculatively executed.
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<strong>Python 3.15's JIT is now back on track (9 minute read)</strong>
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<br>
<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Python 3.15's JIT is back on track and has hit early performance goals, thanks to a community-led effort, strategic "lucky bets" on technical solutions, and a dedicated team.
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fgithub.com%2Fgsd-build%2Fget-shit-done%3Futm_source=tldrdev/1/0100019d00a25e1f-dadf9647-e725-4584-a109-4b4c2843e3ca-000000/3BGSxmxyggmKqR9_vtdSyP8QwsbXm-OPhfGaXoMQkds=449">
<span>
<strong>Get Sh*t Done (GitHub Repo)</strong>
</span>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Get Sh*t Done is a meta-prompting and context engineering system for AI coding assistants that enables reliable, spec-driven development by managing context and streamlining complex project workflows.
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fbloomberg.github.io%2Fjs-blog%2Fpost%2Ftemporal%2F%3Futm_source=tldrdev/1/0100019d00a25e1f-dadf9647-e725-4584-a109-4b4c2843e3ca-000000/RYc5IyawzwknzZogrvWVMYW7IGCh3RMNbAZwkzwCYsw=449">
<span>
<strong>Temporal: The 9-Year Journey to Fix Time in JavaScript (12 minute read)</strong>
</span>
</a>
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<br>
<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Temporal replaces Date with a suite of immutable, timezone- and calendar-aware types.
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