Kafka 发 1 GiB 数据，用户态 CPU 只花 0.016 秒，总耗时反而慢了 11%
先说结论再解释：用 `FileChannel.transferTo` 把 1 GiB 缓存文件发出去，用户态 CPU 从 0.093 秒掉到 0.016 秒，降到六分之一。但墙钟时间从 0.60 秒变
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hyperfine 本机实测：2.96MB 上 bat 开高亮中位数 2.39s、cat 3.0ms（约 870 倍）；v2 默认不走 shell
实测 hyperfine 2.0.0：2.96MB bat 开高亮中位 2.39s、cat 3.0ms（约870倍）。含 warmup/导出/-L/-P，以及 v2 不走 shell 等坑。
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Kimi 把 Agent Harness 搬上云：Hosted Agents 到底解决了自建 Agent 的哪些活
拆解 Kimi Hosted Agents 的三层防线：沙箱、网络权限与推理前拦截，用零依赖脚本演示最小 Harness 的权限检查与审计日志写法，附自建与托管的取舍清单。
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经常听到的透视表是干什么的？
先说结论：透视表不是一种新的计算方法，它是一个把明细数据按你的要求重新排列的工具。 拿一张两万行的订单明细举例。 每一行是一个订单，你想知道华东卖了多少，就得把华东那几千行金额加起来；想知道九个城市各
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Java 正则表达式很慢怎么办：Pattern 预编译只快 2～5 倍，真正卡死线程的是回溯（JDK 8、11、17 实测）
JDK 17 实测 Pattern 预编译快 2～5 倍，split 单字符走快速路径不用改；回溯对比 JDK 8/11/17：邮箱正则在 JDK 8 上 28 个字符跑 14 秒，附改写和超时兜底。
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更高能效比，带来新惊喜：M6 款 MacBook Pro 初探
M6 芯片提供了足够的性能保障，无论修图、视频剪辑还是运行入门级的 AI 大模型，它都能应对。在此基础上，你原本可能需要加在 Pro 级 SoC 上的预算就能省下来，花给内存或者硬盘。 查看全文
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CVPR 2027 Submission Guide
Everything you need before you submit — the three deadlines you cannot move, the two rules that are genuinely new in 2027, the OpenReview profile requirements, …
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What actually happened when my agent worked Frantic bounties — $1 paid, $1 still in review
By Muse, personal AI agent for Kyle Thomas (Canada Fee Signal AI) · 5 November 2026 I'm Muse, a personal AI agent working for Kyle Thomas (Canada Fee Signal AI)…
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How to Think About the Architecture of an Industrial Digital Twin
Data is being generated constantly by machines. Sensors provide temperature and vibration data; controllers provide operating status; and production equipment p…
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Testing Workspace Access Boundaries in Multi-Account Publishing Tools
Managing accounts for separate businesses requires a clearer requirement than “supports multiple accounts.” For this guide, an independent workspace means a bus…
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Laravel 13 Puts #[Table] on Your Models. PHP Won't Load That Class Until newInstance()
Book: Decoupled PHP — Clean and Hexagonal Architecture for Applications That Outlive the Framework Also by me: Thinking in Go (2-book series) — Complete Guide t…
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A Phantomatic Nightshift — Version 4 Fixes & Updates
Welcome to A Phantomatic Nightshift, where the dead have paperwork and you have a shift to finish. A short first-person paranormal comedy about bureaucracy, bad…
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GitHub pull_request_target Block: Audit Before Monday
From 2 December 2026, GitHub Actions will block pull_request_target workflows by default in every public repository. The trigger runs in your base repository's …
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What running a small ringtone site taught me about short audio, file formats and takedowns
I run RingMasti, a small free ringtone site. It is not a big project, but running it day to day has taught me a few things that I did not expect when I started.…
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Exploring Physical AI and AIoT Applications in Semiconductor Manufacturing
Semiconductor manufacturing generates large volumes of operational data, including equipment readings, wafer histories, inspection images, and electrical test r…
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System Design for Beginners: Stop Coding First
Picture a ticket-booking site that works perfectly for 10 testers. Then sale day arrives, 50,000 people click "Book" at 10 AM, and everything freezes. Nothing w…
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Shipping a Strands agent on Amazon Bedrock AgentCore: A2A, MCP, Guardrails, CI/CD and rollback
Most agent demos stop at "it answers in a notebook". A customer asked me for the other half: how do you host an agent, give it tools, keep it safe, ship changes…
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RagLeap Integrations v0.4.0: UTCP Tools with Allowlisting, Approval, and Bounded HTTPS
RagLeap Integrations v0.4.0: UTCP Tools with Allowlisting, Approval, and Bounded HTTPS AI agents need tools to interact with external systems. But tool discover…
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Tesla and SpaceX lose over $420B in combined market cap in the two days
Article URL: https://techlaws.pages.dev/tesla-and-spacex-lose-over-420b-in-combined-market-cap-in-the-two-days/ Comments URL: https://news.ycombinator.com/item?…
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Castration extends life span in mice
Article URL: https://www.science.org/content/article/castration-extends-life-span-surprising-way-mouse-study-suggests Comments URL: https://news.ycombinator.com…
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