InfoSec - Note can't reiterate this enough: Do not go looking for vulnerable servers and exploits on systems you don't own without the proper approval. __∧_∧__ ~~~~~ 　／(*´O｀)／＼ ／|￣∪∪￣|＼／ 　...

Course - Learning Path Cyber Security Career path Cloud GCP AWS ALI Security Security Course ...

Screws 螺丝 Overview 概述 螺丝是最常见的紧固件 (Fastener)：靠螺纹把旋转的力变成夹紧的力，把两个零件压在一起。眼镜、手机、电脑、家具、房屋、汽车里都有螺丝。本文从零开始介绍：螺丝由哪些部分组成、常见种类、起子头类型、怎么读规格、怎么选长度和粗细、预钻孔和沉头孔，以及垫圈、螺母、预埋螺母这些配件。 A screw is the most common fa...

Bearings 轴承 Overview 概述 轴承 (Bearing) 是让一个零件绕着另一个零件顺滑转动（或滑动）的机械元件。它的核心作用是把”滑动摩擦”变成”滚动摩擦”，让转动更省力、更安静、磨损更少，同时支撑住转轴上的重量。自行车轮、滑板、风扇、电机、汽车、洗衣机、硬盘、3D 打印机里都有轴承。本文从零开始介绍：轴承由哪些部分组成、受力方向、常见种类、型号怎么读、后缀（ZZ、...

GitHub Stacked PRs + Squash Merge 链式 PR 与压缩合并 Overview A stacked PR chain (PR2 based on PR1’s branch, PR3 based on PR2’s branch) reviews cleanly, but merging it in a repo that only allows squas...

Insecure Deserialization 不安全反序列化 Insecure Deserialization 不安全反序列化 Overview 概述 Mental Model Flat-Pack Furniture Analogy 心智模型 组装家具类比 The Basic Picture 基本场景 ...

AI Agent Frameworks Comparison / AI Agent 主流框架对比 AI Agent Frameworks Comparison / AI Agent 主流框架对比 Overview 概述 1. Workflow 与 Agent 的区别 / Workflow vs Agent 2. 何时使用 Agent 框架...

npm Package Files: package.json, package-lock.json and the Ecosystem Overview 概述 Node.js 项目的依赖管理由一组相互协作的文件共同完成。package.json 是项目的声明式清单，描述项目是什么、依赖什么；package-lock.json 是精确的依赖快照，保证所有人安装到完全相同的版本；nod...

SQLite Locking and SQLITE_BUSY / SQLite 锁机制与 SQLITE_BUSY 详解 Overview 概述 SQLite 是一个嵌入式数据库，采用文件级别的锁机制来保证数据一致性。与 PostgreSQL 或 MySQL 不同，SQLite 的并发模型极为简单：同一时刻只允许一个写入者，这导致在多进程或多线程场景下容易出现 SQLITE_BUSY（...

Docker Layer Caching and Incremental Builds Docker 层级缓存与增量构建 Overview 概述 Every docker build breaks a Dockerfile into a stack of layers. Docker caches each layer by a hash of its inputs. When a ...

TPM LPC Bus Hijacking and Physical Interface Attacks Source: “A Hijacker’s Guide to Communication Interfaces of the Trusted Platform Module” J. Winter, K. Dietrich — Computers and Mathematics w...

2. Operating System Services, Interfaces, and Structure Source: CS 536 Operating Systems — Chapter 2: Operating-System Structures Overview Chapter 2 covers the services an OS provides, h...

Mass-Storage Systems Overview Secondary storage is the persistent layer beneath main memory — it survives power cycles and holds the bulk of a system’s data. This chapter covers the physical st...

1. Introduction to Operating Systems Source: CS 536 Operating Systems — Chapter 1: Introduction Overview An operating system is software that manages a computer’s hardware, provides a ba...

1.5 Network Performance: Bandwidth, Latency & Delay×Bandwidth Source: CS 528 Computer Networks — Chapter 1: Foundation Overview Network performance is a first-class design constraint...