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<div style="display: none; max-height: 0px; overflow: hidden;">AWS' CEO has argued against replacing junior developers with AI, saying it is "one of the dumbest ideas" for several reasons </div>
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<h1><strong> TLDR Dev <span id="date">2025-12-18</span></strong></h1>
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<strong>Struggling to ship AI? Go from random prompts to an audit-based, spec-driven workflow (Sponsor)</strong>
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Shifting requirements slowing your AI production cadence? <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fzencoder.ai%2Fe3t%2FCtc%2FJA%2B23284%2Fd5qd4C04%2FJk82-6qcW5BW0B06lZ3pMW5Gxwcy64MpQlW7DMt3g8M6FWLN516Mrg2yvMCW8WsJLJ31VG4tW7zWBhf8FfCF2W1mQB8Q7vyYvHW3Bj6YX1YrL2NW7tVl9D3wlC7JW95cJPg77NJc1W1G1Tb95ltVHhN534HVqNhSnLN1mN5b1RmtwXW4r8CrW1KD4clW3h4H5v7sV6DmVrbgxd7BqDSZW2RFxsP2x1YyBW4p8YB55w0tYwMf3Wd3z3yQCdhLHtl04/3/0100019b3168ab9a-d97a3a74-fdce-4486-b192-001c1a5f837b-000000/N3puYH10gmo0F0ytQY21hxhZlkhVkuh337NpozElWc0=436" rel="noopener noreferrer nofollow" target="_blank"><span>Zenflow</span></a> (by Zencoder) is an orchestration platform grounded in well-defined specs, built-in verification, and parallel execution.
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<p>Here's how it works:</p>
<p>1️⃣ Tell Zenflow what to build and choose a template or custom pattern that fits your business.</p>
<p>2️⃣ <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fzencoder.ai%2Fe3t%2FCtc%2FJA%2B23284%2Fd5qd4C04%2FJk82-6qcW5BW0B06lZ3pMW5Gxwcy64MpQlW7DMt3g8M6FWLN516Mrg2yvMCW8WsJLJ31VG4tW7zWBhf8FfCF2W1mQB8Q7vyYvHW3Bj6YX1YrL2NW7tVl9D3wlC7JW95cJPg77NJc1W1G1Tb95ltVHhN534HVqNhSnLN1mN5b1RmtwXW4r8CrW1KD4clW3h4H5v7sV6DmVrbgxd7BqDSZW2RFxsP2x1YyBW4p8YB55w0tYwMf3Wd3z3yQCdhLHtl04/4/0100019b3168ab9a-d97a3a74-fdce-4486-b192-001c1a5f837b-000000/wOj9zJYKt9wZ3msetQ6pRva7RaMIScQeYuV7neATjLU=436" rel="noopener noreferrer nofollow" target="_blank"><span>Zenflow's agents</span></a> execute, verify, and review to catch issues.</p>
<p>3️⃣ Review and ship verified, production-ready code.</p>
<p>Teams use Zenflow to eliminate rework, reduce regressions, and ship complex AI features far faster.</p>
<p><a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fzencoder.ai%2Fe3t%2FCtc%2FJA%2B23284%2Fd5qd4C04%2FJk82-6qcW5BW0B06lZ3pMW5Gxwcy64MpQlW7DMt3g8M6FWLN516Mrg2yvMCW8WsJLJ31VG4tW7zWBhf8FfCF2W1mQB8Q7vyYvHW3Bj6YX1YrL2NW7tVl9D3wlC7JW95cJPg77NJc1W1G1Tb95ltVHhN534HVqNhSnLN1mN5b1RmtwXW4r8CrW1KD4clW3h4H5v7sV6DmVrbgxd7BqDSZW2RFxsP2x1YyBW4p8YB55w0tYwMf3Wd3z3yQCdhLHtl04/5/0100019b3168ab9a-d97a3a74-fdce-4486-b192-001c1a5f837b-000000/tQx-tqqKG1GRUJQq8fmwWMAT5KB2_O9EIRFeiATodDk=436" rel="noopener noreferrer nofollow" target="_blank"><span>See the power of spec-driven AI</span></a>
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<strong>How SQLite Is Tested (36 minute read)</strong>
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SQLite has a thorough and multi-faceted testing process, with test code outweighing its core library. This includes four independent test harnesses that collectively run billions of test cases to verify functionality, cross-database compatibility, and resilience to malicious inputs. Specialized anomaly tests simulate and verify proper handling of out-of-memory conditions, I/O errors, and power loss.
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AI made not being a designer or developer less of a barrier. You provide the vision, and AI writes the code. Implementation used to be the bottleneck, but now we're only bottlenecked by taste. People who succeed in the new era will be those who know what they want and can communicate it clearly.
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<strong>Inside PostHog: How SSRF, a ClickHouse SQL Escaping 0day, and Default PostgreSQL Credentials Formed an RCE Chain (ZDI-25-099, ZDI-25-097, ZDI-25-096) (17 minute read)</strong>
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A security researcher uncovered a critical Remote Code Execution (RCE) chain in PostHog by chaining several vulnerabilities. The initial vector was a Server-Side Request Forgery (SSRF) vulnerability that bypassed webhook URL validation, allowing an attacker to save and trigger requests to internal URLs via a Rust worker.
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<strong>AWS CEO Explains 3 Reasons AI Can't Replace Junior Devs (8 minute read)</strong>
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AWS' CEO has argued against replacing junior developers with AI, saying it is "one of the dumbest ideas" for several reasons. Junior devs are often the most proficient with new AI tools and, being the least expensive, don't offer much cost savings when cut. Additionally, removing them severs a company's talent pipeline.
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Ruby 4.0 features a new JIT compiler, improvements to Ractors, a new mechanism to define namespaces, and more. There shouldn't be any serious breaking changes. The major version bump is to mark Ruby's 30th birthday. This post highlights some interesting changes. A link to the full list of changes is available.
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Web Monetization is a developing web standard that would allow users to automatically send small payments to websites they visit through built-in browser functionality, similar to how Apple Pay works for purchases. However, recent attempts to test the current implementation through browser extensions and wallet providers like GateHub have been frustrating due to complex setup processes and regional restrictions.
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<h1><strong>Quick Links</strong></h1>
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<strong>Firecrawl: open-source web data API for LLMs [69k+ GitHub stars] (Sponsor)</strong>
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Decision-making is the hardest skill in software engineering.
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This site contains a collection of smooth animated icons that can be used freely in personal projects.
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