<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"><channel><title>Xiaojun 的技术笔记</title><description>技术文章与个人介绍</description><link>https://xiaojunzhou.xyz/</link><item><title>Go channel 死锁的四个检查点</title><link>https://xiaojunzhou.xyz/posts/go-channel-deadlock-checklist/</link><guid isPermaLink="true">https://xiaojunzhou.xyz/posts/go-channel-deadlock-checklist/</guid><description>用一个 worker pool 的错误实现，说明写 channel 代码前要问自己的四个问题：谁来关、谁来读、能否退出、谁来收尾。</description><pubDate>Wed, 21 Oct 2026 00:00:00 GMT</pubDate></item><item><title>vLLM：PagedAttention 与前缀缓存</title><link>https://xiaojunzhou.xyz/posts/agent-vllm-paged-attention-prefix-caching/</link><guid isPermaLink="true">https://xiaojunzhou.xyz/posts/agent-vllm-paged-attention-prefix-caching/</guid><description>KV Cache 既是推理性能的关键，也是显存的主要消耗者。梳理 PagedAttention 如何分页管理显存、前缀缓存如何复用相同前缀，以及 prompt 怎么构造才能提高命中率</description><pubDate>Sun, 18 Oct 2026 00:00:00 GMT</pubDate></item><item><title>分布式理论与事务：从 CAP 到对账</title><link>https://xiaojunzhou.xyz/posts/distributed-theory-and-transaction/</link><guid isPermaLink="true">https://xiaojunzhou.xyz/posts/distributed-theory-and-transaction/</guid><description>从 ACID、CAP、BASE 到 Raft、分布式事务、幂等与分布式 ID，最后落到海外订阅支付的一致性方案，讲清每个方案背后的取舍。</description><pubDate>Sun, 18 Oct 2026 00:00:00 GMT</pubDate></item><item><title>DeepSeek Harness 模块拆解</title><link>https://xiaojunzhou.xyz/posts/agent-deepseek-harness-modules/</link><guid isPermaLink="true">https://xiaojunzhou.xyz/posts/agent-deepseek-harness-modules/</guid><description>以 DeepSeek 开源的 agent harness（dsh）为样本，拆解一个 harness 包含哪些模块：循环、上下文、工具、权限沙箱、会话日志、子 Agent 与循环守卫。</description><pubDate>Fri, 16 Oct 2026 00:00:00 GMT</pubDate></item><item><title>go.mod 的 go 指令：语义与工具链</title><link>https://xiaojunzhou.xyz/posts/go-mod-go-directive/</link><guid isPermaLink="true">https://xiaojunzhou.xyz/posts/go-mod-go-directive/</guid><description>Go 1.21 之后，go.mod 里的 go 行从“建议”变成“硬约束”，并与 GOTOOLCHAIN 联动自动切换工具链。本文讲清它管什么、不管什么，以及工程上怎么用。</description><pubDate>Thu, 15 Oct 2026 00:00:00 GMT</pubDate></item><item><title>GKE 证书自动续期：DNS alias 实践</title><link>https://xiaojunzhou.xyz/posts/network-acme-dns-alias-cert-renew/</link><guid isPermaLink="true">https://xiaojunzhou.xyz/posts/network-acme-dns-alias-cert-renew/</guid><description>用 CronJob + acme.sh 在 GKE 上为多命名空间自动续期证书，重点讲 DNS-01 的 CNAME 委派（DNS alias mode）及其参数陷阱</description><pubDate>Wed, 14 Oct 2026 00:00:00 GMT</pubDate></item><item><title>Python 协程与 Go 并发对照</title><link>https://xiaojunzhou.xyz/posts/go-python-asyncio-vs-goroutine/</link><guid isPermaLink="true">https://xiaojunzhou.xyz/posts/go-python-asyncio-vs-goroutine/</guid><description>从 async/await 语法与 asyncio 事件循环的分层讲起，对照 goroutine，梳理调度方式、函数着色、通信原语、取消与阻塞调用的差异</description><pubDate>Tue, 13 Oct 2026 00:00:00 GMT</pubDate></item><item><title>Go 协程泄漏：六类生产场景与根因</title><link>https://xiaojunzhou.xyz/posts/go-goroutine-leak-production/</link><guid isPermaLink="true">https://xiaojunzhou.xyz/posts/go-goroutine-leak-production/</guid><description>归纳线上常见的六类 goroutine 泄漏场景，结合 Uber、Coder 等真实案例分析根因，并给出修复与排查方法</description><pubDate>Mon, 12 Oct 2026 00:00:00 GMT</pubDate></item><item><title>Go HTTP 服务优雅退出：从标准库到 Kubernetes</title><link>https://xiaojunzhou.xyz/posts/go-graceful-shutdown/</link><guid isPermaLink="true">https://xiaojunzhou.xyz/posts/go-graceful-shutdown/</guid><description>从 http.Server.Shutdown 到 Kubernetes 摘流量时序与宽限期预算，梳理 Go 服务优雅退出的完整做法</description><pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate></item><item><title>LangChain 入门：构建第一个 Agent</title><link>https://xiaojunzhou.xyz/posts/agent-langchain-quickstart/</link><guid isPermaLink="true">https://xiaojunzhou.xyz/posts/agent-langchain-quickstart/</guid><description>基于 LangChain Academy 入门课三个模块，用 DeepSeek 从模型调用、工具、记忆一路做到 MCP、多 Agent、中间件与人工审批，并记录代理环境的依赖与踩坑</description><pubDate>Sat, 10 Oct 2026 00:00:00 GMT</pubDate></item><item><title>MySQL 内存与磁盘数据结构全景</title><link>https://xiaojunzhou.xyz/posts/mysql-innodb-storage-architecture/</link><guid isPermaLink="true">https://xiaojunzhou.xyz/posts/mysql-innodb-storage-architecture/</guid><description>从 Buffer Pool 到 B+ 树页，一文读懂 InnoDB 的存储设计</description><pubDate>Tue, 29 Sep 2026 13:03:00 GMT</pubDate></item></channel></rss>