Demo Scope是一款专为iOS设计的移动演示工具，支持录制或直播任何移动网站，同时显示摄像头画面和触摸指示器。它提供画中画摄像头功能，支持圆形、方形、矩形三种形状选择，可调整大小和位置；触摸指示器能清晰展示点击、滑动等手势，支持6种颜色和大小调整。应用支持加载任何URL，提供完整的浏览器导航功能，并能直接流媒体至Twitch、YouTube、Facebook等平台。Demo Scope面向创业者、产品团队、流媒体创作者和教育工作者，提供免费版（5分钟限制和水印）和一次性购买的Pro版，适合产品演示、教程制作、直播内容等多种场景。
原文链接：Hacker News
MCPShark Viewer is an extension tool designed specifically for VS Code and Cursor editors, created to help AI developers easily monitor and debug MCP (Model Context Protocol) communication traffic. With this tool, developers no longer need to frequently switch between terminals and log files—they can directly view MCP communication data in real-time within the editor, significantly improving debugging efficiency for AI application development. Developed by the MCPShark team, the tool provides complete download links for the VS Code Marketplace, a GitHub repository, and an official website. The author is also actively seeking user feedback to understand which features could make MCP debugging more convenient, such as timeline views, session grouping, parameter comparison, and trace exporting. For developers building MCP AI agents or tools, this tool is undoubtedly a powerful assistant that can significantly simplify the debugging process and enhance the development experience.
Original Link:Hacker News
The National Oceanic and Atmospheric Administration (NOAA) has recently deployed a new generation of AI-powered global weather model, marking a major breakthrough for artificial intelligence technology in the field of weather forecasting. This model is based on Google DeepMind's GraphCast technology (2023 version), rather than the recently hyped WeatherNext 2 model. Experts speculate this may be due to the time required for model integration and testing. In discussions, some have pointed out that the model's performance may be comparable to the advanced models of the European Centre for Medium-Range Weather Forecasts (ECMWF), while others worry this is merely exaggerated promotion of existing machine learning methods rather than true integration of large language models (LLMs). This deployment not only improves prediction accuracy but also demonstrates the practical value of AI in scientific applications, bringing revolutionary impact to the meteorological industry.
Original Link:Hacker News
The open-source reVC project has successfully ported the classic game 'Grand Theft Auto: Vice City' to modern browsers, allowing it to run directly without installation. By redesigning core systems including rendering, input handling, audio, and file access, this technology leverages WebAssembly and modern browser APIs to achieve stable performance. This breakthrough demonstrates the potential of web technology in complex game engine applications, offering new perspectives for game developers. Built on open-source code from GitHub, the project strictly complies with copyright laws and includes only the technical demonstration portion. Users must provide their own legal game assets to experience the full content. This innovation not only enriches the web gaming ecosystem but also opens up new possibilities for web technology in multimedia applications.
Original Link:Hacker News
Hatchet shares real-world problems and solutions they encountered while implementing their own PostgreSQL partitioning system. As a PostgreSQL-based persistent queue system, Hatchet processes hundreds of millions of tasks daily. When their data reached 200 million rows, they decided to implement their own partitioning system to improve performance. However, after launching the partitioning system, they discovered that some query performance had degraded by 10x. After investigation, they found that the issue was that partitioned tables don't automatically run the ANALYZE command, leading to inaccurate query statistics. The article details the troubleshooting process, solutions, and lessons learned during their partitioning journey, including practical tips like using DETACH PARTITION...CONCURRENTLY to reduce lock contention and manually running ANALYZE to update statistics. This technical sharing is highly valuable for database administrators and backend developers who need to handle large-scale data.
Original Link:Hacker News
TinyPDF is an extremely lightweight PDF creation library at just 3.3KB with zero dependencies, focusing on core PDF generation functionality. It removes complex features like TTF fonts, PNG/SVG, and HTML-to-PDF conversion, concentrating on 95% of common use cases: adding text and images to pages. The library supports multi-page documents, custom page sizes, text alignment, rectangle line drawing, JPEG image insertion, text width measurement, and Markdown to PDF conversion. Developers can generate complete invoices, receipts, reports, and other documents with approximately 50 lines of code. For JavaScript applications that need to generate simple PDFs, TinyPDF offers a lightweight solution that's 70 times smaller than jsPDF, making it ideal for frontend projects where file size is critical.
Original Link:Hacker News
Tech enthusiast Linus Akesson spent over six months successfully performing Maurice Ravel's "Bolero" using nine custom-built 8-bit instruments (including NES timpani). The project involves 52 mixing channels and innovative hardware design, with the author sharing detailed audio processing techniques, such as the clever method of using ADPCM channels to control NES triangle wave envelopes. The video achieves high synchronization, showcasing the complete process from hardware creation to mixing. This project not only demonstrates the charm of retro computing technology but also provides rich technical insights, perfect for readers interested in electronic music and hardware engineering.
Original Link:Hacker News
最新评论
I don't think the title of your article matches the content lol. Just kidding, mainly because I had some doubts after reading the article.
这个AI状态研究很深入，数据量也很大，很有参考价值。
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文章内容很有深度，AI模型的发展趋势值得关注。
内容丰富，对未来趋势分析得挺到位的。
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光纤技术真厉害，文章解析得挺透彻的。
文章内容很实用，想了解更多相关技巧。