Hacker News Top Stories with Summaries (September 30, 2023)
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<h1> Hacker News Top Stories</h1>
<p>Here are the top stories from Hacker News with summaries for September 30, 2023 :</p>
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RealFill: Image completion using diffusion models
Summary: RealFill, a novel generative approach for image completion, fills in missing regions of an image with content that should have been there. Developed by researchers from Google Research and Cornell University, RealFill uses a few reference images of a scene to personalize a generative inpainting model. The model can handle varying viewpoints, lighting conditions, camera apertures, and image styles. RealFill outperforms existing approaches in a new image completion benchmark, producing visually compelling and authentic content.
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50 years later, is two-phase locking the best we can do?
Summary: Concurrency Freaks explores the evolution of Two-Phase Locking (2PL) in concurrent algorithms and patterns. The article discusses the advantages of 2PL, such as simplicity and strong isolation level, and its disadvantages, including poor read-scalability and live-lock progress. The authors introduce Two-Phase Locking Starvation-Free (2PLSF), an improved algorithm that addresses these issues, providing better scalability and starvation-free transactions.