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<div style="display: none; max-height: 0px; overflow: hidden;">OpenAI and Anthropic recently released updated coding assistant models, GPT-5.3-Codex and Claude Opus 4.6. Codex 5.3 has improved a lot </div>
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<h1><strong> TLDR Dev <span id="date">2026-02-10</span></strong></h1>
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<strong>Why is there always a meeting bot in your Zoom call? (Sponsor)</strong>
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<p>They secretly power every meeting bot and desktop recording app, from Cluely to Hubspot to Clickup.</p>
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<strong>How Yelp Built “Yelp Assistant” (10 minute read)</strong>
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Yelp built an AI assistant that answers specific questions about businesses (like “Is the patio heated?”) by pulling evidence from reviews, photos, and business attributes instead of relying on the LLM's own knowledge. The real challenge wasn't the initial prototype, but rather making it production-ready, which meant splitting a single bloated LLM call into specialized stages, keeping data fresh in near real-time, and cutting latency from 10+ seconds down to under 3.5.
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<strong>The purpose of Continuous Integration is to fail (6 minute read)</strong>
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Continuous Integration (CI) provides value not when it passes, but specifically when it fails, as its primary purpose is to catch mistakes early in the development process. Without CI, errors are only detected after deployment, resulting in long, manual, and dangerous feedback loops where problems can cause significant damage. A failing CI run acts as a safety net, preventing erroneous code from reaching users and offering a much shorter, automated, and safer feedback mechanism.
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<strong>Faster, cheaper, messier: lessons from our switch to self-hosted GitHub Actions (6 minute read)</strong>
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The Guardian's iOS team was getting hammered by GitHub Actions costs, especially since macOS runners carry a 10x minute multiplier. They had an unused Mac Mini in the office, so they set it up as a self-hosted runner. Builds got 50-120% faster, monthly costs dropped £400, and they got control over their own macOS upgrades and debugging.
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<strong>Nobody knows how the whole system works (4 minute read)</strong>
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No single person truly understands how complex technological systems, like telephones or the internet, work completely. While building without understanding underlying mechanisms is risky, modern systems are inherently too complex for any individual to grasp entirely.
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<strong>Negative Externalities of Gen-AI within Software Teams (10 minute read)</strong>
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Generative AI, despite potential individual productivity gains, creates "negative externalities" that reduce collaboration within software teams. These issues include LLM-generated communication that is overly verbose and lacks contextual hierarchy, making crucial information difficult to find. Additionally, AI-produced code introduces novel types of bugs that necessitate increased vigilance during code reviews and obscures authorship, making it harder to identify team members with specific knowledge.
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<strong>Stop Using Icons in Data Tables (4 minute read)</strong>
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Icons in data tables actually increase cognitive load and visual entropy, making complex data harder to process. This is because non-universal icons require users to decode intricate shapes, creating a "cognitive tax" unlike the predictable, rhythmic "texture" of text.
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<strong>Cut your dev loop from hours to seconds (Sponsor)</strong>
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mirrord (<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fgithub.com%2Fmetalbear-co%2Fmirrord/1/0100019c47736fb7-6b7f340b-e8b1-47ff-8c18-fa8011012151-000000/u58w0_orIg3X1UtUfIwF6zUoDiI112XBH_lvS5EDDKU=444" rel="noopener noreferrer nofollow" target="_blank"><span>4.9k GitHub stars</span></a>) lets you run your microservice locally with access to everything in the cloud, speeding up development, improving code quality, and reducing cloud costs. It's used by companies like monday.com, which reduced dev cycle time by 70%. <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fmetalbear.com%2Fmirrord%2F%3Futm_source=tldrdev%26utm_medium=tldrnewsletter%26utm_campaign=ql20260210%26utm_content=std/2/0100019c47736fb7-6b7f340b-e8b1-47ff-8c18-fa8011012151-000000/4-KWOqWi6n05_HDDv7cyZsyc6hcZQs7wsRtStzySXDs=444" rel="noopener noreferrer nofollow" target="_blank"><span>Learn more about mirrord.</span></a>
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LiftKit is an open-source UI framework designed for perfectionists, primarily solving common visual symmetry problems in user interfaces. It applies golden-ratio proportions with subpixel accuracy to elements like buttons, cards, and inputs, correcting issues such as icon spacing and padding.
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