https://example.org/Recent content in 欢迎 on 我思故我在Hugo -- gohugo.iozh-cn© 2026 博主Wed, 19 Aug 2026 09:00:00 +0800https://example.org/ai/rag-intro/Wed, 19 Aug 2026 09:00:00 +0800https://example.org/ai/rag-intro/<h2 class="relative group">为什么要 RAG <div id="为什么要-rag" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e4%b8%ba%e4%bb%80%e4%b9%88%e8%a6%81-rag" aria-label="锚点">#</a> </span> </h2> <p>大模型的知识有截止日期，也无法覆盖私有文档。<strong>检索增强生成（RAG）</strong> 先从知识库检索相关内容，再让模型基于这些内容作答，显著减少幻觉。</p>https://example.org/ai/prompt-engineering/Tue, 18 Aug 2026 09:00:00 +0800https://example.org/ai/prompt-engineering/<h2 class="relative group">什么是提示词工程 <div id="什么是提示词工程" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e4%bb%80%e4%b9%88%e6%98%af%e6%8f%90%e7%a4%ba%e8%af%8d%e5%b7%a5%e7%a8%8b" aria-label="锚点">#</a> </span> </h2> <p>提示词（Prompt）是与大语言模型交互的界面。<strong>提示词工程</strong>通过精心设计输入，让模型稳定产出高质量结果。</p>https://example.org/ai/ai-overview/Mon, 17 Aug 2026 10:00:00 +0800https://example.org/ai/ai-overview/<h2 class="relative group">机器学习与深度学习 <div id="机器学习与深度学习" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e6%9c%ba%e5%99%a8%e5%ad%a6%e4%b9%a0%e4%b8%8e%e6%b7%b1%e5%ba%a6%e5%ad%a6%e4%b9%a0" aria-label="锚点">#</a> </span> </h2> <p>机器学习让程序从数据中自动学习规律；深度学习通过多层神经网络在图像、语音、文本等任务上取得突破。</p>https://example.org/cloud/terraform-iac/Mon, 17 Aug 2026 09:00:00 +0800https://example.org/cloud/terraform-iac/<h2 class="relative group">为什么需要 IaC <div id="为什么需要-iac" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e4%b8%ba%e4%bb%80%e4%b9%88%e9%9c%80%e8%a6%81-iac" aria-label="锚点">#</a> </span> </h2> <p>手动在控制台点按钮创建资源，难以复用、难以审计。<strong>基础设施即代码（IaC）</strong> 用代码描述资源，让变更可评审、可回滚。</p>https://example.org/cloud/cloud-basics/Sun, 16 Aug 2026 10:00:00 +0800https://example.org/cloud/cloud-basics/<h2 class="relative group">云计算的三种服务模式 <div id="云计算的三种服务模式" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e4%ba%91%e8%ae%a1%e7%ae%97%e7%9a%84%e4%b8%89%e7%a7%8d%e6%9c%8d%e5%8a%a1%e6%a8%a1%e5%bc%8f" aria-label="锚点">#</a> </span> </h2> <ul> <li><strong>IaaS</strong>（基础设施即服务）：提供虚拟机、存储与网络，如 AWS EC2</li> <li><strong>PaaS</strong>（平台即服务）：提供运行时与中间件，如 Heroku</li> <li><strong>SaaS</strong>（软件即服务）：直接提供应用，如 Gmail</li> </ul> <h2 class="relative group">容器与 Kubernetes <div id="容器与-kubernetes" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e5%ae%b9%e5%99%a8%e4%b8%8e-kubernetes" aria-label="锚点">#</a> </span> </h2> <p>容器（如 Docker）将应用与其依赖打包，实现环境一致性；Kubernetes 则负责容器的编排、扩缩容与故障恢复。</p>https://example.org/cloud/docker-basics/Sun, 16 Aug 2026 09:00:00 +0800https://example.org/cloud/docker-basics/<h2 class="relative group">容器解决什么问题 <div id="容器解决什么问题" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e5%ae%b9%e5%99%a8%e8%a7%a3%e5%86%b3%e4%bb%80%e4%b9%88%e9%97%ae%e9%a2%98" aria-label="锚点">#</a> </span> </h2> <p>&ldquo;在我机器上好好的&rdquo;——环境不一致是运维噩梦。容器把应用与运行环境打包成<strong>镜像</strong>，随处可跑。</p>https://example.org/db/postgresql-intro/Sat, 15 Aug 2026 10:00:00 +0800https://example.org/db/postgresql-intro/<h2 class="relative group">什么是 PostgreSQL <div id="什么是-postgresql" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e4%bb%80%e4%b9%88%e6%98%af-postgresql" aria-label="锚点">#</a> </span> </h2> <p>PostgreSQL 是一款功能强大的开源关系型数据库，以<strong>可靠性</strong>和<strong>扩展性</strong>著称，支持丰富的数据类型、全文检索、JSON 与地理信息处理。</p>https://example.org/db/sql-tuning/Sat, 15 Aug 2026 09:00:00 +0800https://example.org/db/sql-tuning/<h2 class="relative group">定位慢查询 <div id="定位慢查询" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e5%ae%9a%e4%bd%8d%e6%85%a2%e6%9f%a5%e8%af%a2" aria-label="锚点">#</a> </span> </h2> <ul> <li>开启慢查询日志：<code>log_min_duration_statement</code></li> <li>用 <code>EXPLAIN ANALYZE</code> 分析执行计划</li> <li>关注 <code>pg_stat_statements</code> 统计高频 SQL</li> </ul> <h2 class="relative group">常见性能杀手 <div id="常见性能杀手" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e5%b8%b8%e8%a7%81%e6%80%a7%e8%83%bd%e6%9d%80%e6%89%8b" aria-label="锚点">#</a> </span> </h2> <ul> <li><strong>全表扫描</strong>：缺少索引或查询条件无法命中索引</li> <li><strong>隐式类型转换</strong>：索引列上做函数运算导致索引失效</li> <li><strong>N+1 查询</strong>：循环内逐条查询</li> <li><strong>大偏移分页</strong>：<code>OFFSET 1000000</code> 越翻越慢</li> </ul> <h2 class="relative group">优化手段 <div id="优化手段" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e4%bc%98%e5%8c%96%e6%89%8b%e6%ae%b5" aria-label="锚点">#</a> </span> </h2> <ul> <li>改写 SQL：用小结果集驱动大表（<code>FROM</code> 顺序）</li> <li>合理利用索引：覆盖索引、复合索引</li> <li>适当反规范化：预计算汇总表</li> </ul> <h2 class="relative group">小结 <div id="小结" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e5%b0%8f%e7%bb%93" aria-label="锚点">#</a> </span> </h2> <p>SQL 调优的核心是<strong>理解执行计划</strong>。先定位瓶颈，再对症下药，避免盲目加索引。</p>https://example.org/posts/hugo-quickstart-guide/Fri, 14 Aug 2026 18:00:00 +0800https://example.org/posts/hugo-quickstart-guide/<p>Hugo 是目前最流行的开源静态站点生成器之一，以<strong>构建速度快</strong>和<strong>部署简单</strong>著称。本文带你从零开始，搭建并发布你的第一个 Hugo 站点。</p>https://example.org/posts/my-first-post/Fri, 14 Aug 2026 17:55:41 +0800https://example.org/posts/my-first-post/<h2 class="relative group">简介 <div id="简介" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e7%ae%80%e4%bb%8b" aria-label="锚点">#</a> </span> </h2> <p>这是 <strong>粗体</strong> 文本，这是 <em>斜体</em> 文本。</p>https://example.org/db/backup-recovery/Fri, 14 Aug 2026 09:00:00 +0800https://example.org/db/backup-recovery/<h2 class="relative group">为什么备份如此重要 <div id="为什么备份如此重要" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e4%b8%ba%e4%bb%80%e4%b9%88%e5%a4%87%e4%bb%bd%e5%a6%82%e6%ad%a4%e9%87%8d%e8%a6%81" aria-label="锚点">#</a> </span> </h2> <p>数据是系统的核心资产。硬件故障、误操作、勒索软件——任何意外都可能造成不可挽回的损失。<strong>没有备份的数据，等于没有数据。</strong></p>https://example.org/db/postgresql-index-tuning/Thu, 13 Aug 2026 09:00:00 +0800https://example.org/db/postgresql-index-tuning/<h2 class="relative group">索引为什么重要 <div id="索引为什么重要" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e7%b4%a2%e5%bc%95%e4%b8%ba%e4%bb%80%e4%b9%88%e9%87%8d%e8%a6%81" aria-label="锚点">#</a> </span> </h2> <p>没有索引的表扫描是 O(n) 的，数据量上来后查询会急剧变慢。合理的索引能把查询降到 O(log n)。</p>https://example.org/posts/ssg-comparison/Wed, 12 Aug 2026 09:00:00 +0800https://example.org/posts/ssg-comparison/<h2 class="relative group">为什么需要静态网站生成器 <div id="为什么需要静态网站生成器" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e4%b8%ba%e4%bb%80%e4%b9%88%e9%9c%80%e8%a6%81%e9%9d%99%e6%80%81%e7%bd%91%e7%ab%99%e7%94%9f%e6%88%90%e5%99%a8" aria-label="锚点">#</a> </span> </h2> <p>静态网站生成器（SSG）把 Markdown 等内容编译成纯静态 HTML，兼具<strong>速度快</strong>、<strong>安全性高</strong>、<strong>部署简单</strong>的优势。</p>https://example.org/posts/markdown-tips/Tue, 11 Aug 2026 09:00:00 +0800https://example.org/posts/markdown-tips/<h2 class="relative group">为什么用 Markdown <div id="为什么用-markdown" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e4%b8%ba%e4%bb%80%e4%b9%88%e7%94%a8-markdown" aria-label="锚点">#</a> </span> </h2> <p>Markdown 语法简洁、专注内容，是技术写作的事实标准。配合静态站点生成器，可以零成本发布图文。</p>https://example.org/posts/going-live/Mon, 10 Aug 2026 09:00:00 +0800https://example.org/posts/going-live/<h2 class="relative group">缘起 <div id="缘起" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e7%bc%98%e8%b5%b7" aria-label="锚点">#</a> </span> </h2> <p>一直想拥有一个属于自己的博客，把学习笔记和心得沉淀下来。对比了各种方案后，最终选择了 <strong>Hugo + Blowfish</strong> 的组合：构建快、主题美观、天然支持多语言。</p>https://example.org/posts/tech-review-2025/Sun, 28 Dec 2025 10:00:00 +0800https://example.org/posts/tech-review-2025/<h2 class="relative group">大模型从演示走向生产 <div id="大模型从演示走向生产" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e5%a4%a7%e6%a8%a1%e5%9e%8b%e4%bb%8e%e6%bc%94%e7%a4%ba%e8%b5%b0%e5%90%91%e7%94%9f%e4%ba%a7" aria-label="锚点">#</a> </span> </h2> <p>2025 年，大语言模型不再是&quot;聊天玩具&quot;，而是深入到了代码补全、客服、文档处理等真实业务场景。<strong>RAG 与 Agent</strong> 成为企业落地的主流范式，模型推理成本持续下降。</p>https://example.org/about/Mon, 01 Jan 0001 00:00:00 +0000https://example.org/about/<h2 class="relative group">关于本站 <div id="关于本站" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e5%85%b3%e4%ba%8e%e6%9c%ac%e7%ab%99" aria-label="锚点">#</a> </span> </h2> <p>本站是一个使用 <a href="https://gohugo.io" target="_blank" rel="noreferrer">Hugo</a> 静态站点生成器与 <a href="https://blowfish.page" target="_blank" rel="noreferrer">Blowfish</a> 主题搭建的个人博客，参考了 <a href="https://vonng.com/pigsty/" target="_blank" rel="noreferrer">vonng.com/pigsty</a> 的双语站点结构：默认中文、<code>/en/</code> 英文版、文章按年份分组索引。</p>