Library

Welcome to IceHe's Library!

好记性不如烂博客

• Here: https://icehe.life
• Whoami: IceHe's bio

Technology

Book

IceHe's Book List @douban.com

短期太急躁，總想走捷徑快速見效； 長期沒耐心，小覷長期堅持的成長。

Coding

• Refactoring
  • Improving the Design of Existing Code
• Design Patterns
  • Elements of Reusable Object-Oriented Software
• Pragmatic Programmer
  • Your journey to mastery - 2nd Edition
• Clean Agile
  • Back to Basics
• The Zen of Python
  • PEP 20
• Google Engineering Practices (notes)
  • How to do code review
  • How to get through a code review

JVM - Java Virtual Machine - TOC

• Part I & Part II. Automatic Memory Management
• Part III. Execution Engine - todo
• Part IV. Compile and Code Optimize

Designing Data Intensive Applications - TOC

• Part I. Foundations of Data Systems
  • 1. Reliable, Scalable, and Maintainable Applications
  • 2. Data Models and Query Languages
  • 3. Storage and Retrieval / 4. Encoding and Evolution
• Part II. Distributed Data
  • 5. Replication / 6. Partitioning / 7. Transactions
  • 8. The Trouble with Distributed Systems
  • 9. Consistency and Consensus
• Part III. Derived Data
  • 10. Batch Processing / 11. Stream Processing / …

Fundamentals of Software Architecture - TOC

• reading notes

Auth*

• OAuth 2 - Open Authorization

  an open standard for access delegation, commonly used as a way for Internet users to grant websites or applications access to their information on other websites but without giving them the passwords

  • Resource Indicators for OAuth 2.0 - RFC 8707
  • The OAuth 2.0 Authorization Framework: Bearer Token Usage - RFC 6750
  • CSRF Attack on OAuth 2.0
  • OAuth 2 in Action - Book
  • OAuth 2.0 实战课 - Geekbang

• OIDC (Open ID Connect)

  an interoperable authentication protocol based on the OAuth 2.0 family of specifications

  • OIDC Core 1.0
    • OpenID Connect Core 1.0 incorporating errata set 1
    • It defines the core OpenID Connect functionality: authentication built on top of OAuth 2.0 and the use of Claims to communicate information about the End-User.
    • It also describes the security and privacy considerations for using OpenID Connect.
  • PKCE: Proof Key for Code Exchange by OAuth Public Clients - RFC7636

Snippet

巨大的建築，總是由一木一石疊起來的，我們何妨做做這一木一石呢？我時常做些零碎事，就是為此。

Terminology

• Abbreviations
  • usually related to coding (programming)
• Glossaries
  • with intros to the common technology products

Message Queue

• kafka - digest
• RabbitMQ
• RocketMQ
• ActiveMQ
• MemcacheQ
• Notes

Storage

• LSM Tree: intro
  • basic data structure of LevelDB & RocksDB
• Elasticsearch: usage
  • for search and analysis
• MySQL: usage
  • robust SQL database server
• PostgreSQL: notes
• Redis: basics / notes / key notes
  • in-memory data structure store as a database, cache and message broker
• Cache Patterns
  • cache aside / read through / write through / write behind caching

Markdown

• Markdown Style Guide
• MDL - Markdown Lint Tool

Web

• IP Address
• Network - Notes
• URL Encoding aka. Percent Encoding
  • a method to encode arbitrary data in a Uniform Resource Identifier (URI) using only the limited US-ASCII characters legal within a URI
• Base64 Encoding
  • a group of binary-to-text encoding schemes that represent binary data in an ASCII string format
• Simple HTTP service
  • init.d with php -S
  • Nginx via the configuration file
• How to build my personal website?
  • Powered by docsify
• How to estimate the required computing resources?
  • QPS to CPU Cores

Programming Languages - at a glance

• Kotlin
  • a cross-platform, statically typed, general-purpose programming language with type inference
  • Basics / Idioms (todo) / Compiler / …
  • Mocking for unit tests
    • MockK: mocking library for Kotlin
    • Mockito: tasty mocking framework for unit tests in Java
• PHP
  • a popular general-purpose scripting language that is especially suited to web development
• AppleScript
  • a scripting language that facilitates automated control over scriptable Mac applications
  • Control Evernote & macOS
• Learn X in Y minutes
  • Elixir: a dynamic, functional language for building scalable and maintainable applications
  • Scala: combines object-oriented and functional programming in one concise, high-level language
  • Python: a programming language that lets you work quickly and integrate systems more effectively

Others

• Alpine Linux
  • minimal OS Docker image
• Debug experiences
• Regular Expression
  • a sequence of characters that specifies a search pattern
• Kotlin + Spring Boot (doing)
• Sorting Algorithms
• ID Generator
• CentOS 6
• Memcached
• Work Flow
• XXL-JOB - github

Efficiency

磨刀不誤砍柴工。

macOS

• Setup Guide - 设置指南
• Efficiency Guide - 效率指南
  • macOS shortcuts
  • Sublime Text shortcuts
  • JetBrains IDE shortcuts
  • mac-conf: my macOS configuration files
• JVM Options Optimization
  • e.g. for JetBrains IDE - IntelliJ IDEA

Git

• Common Commands
• Concepts & Theory
• Docs Digest
• Commit Signature Verification

Command

Manual

• ab: Apache HTTP server benchmarking tool
• ag: The Silver Searcher. Like ack, but faster.
• awk: pattern-directed scanning and processing language
  • gawk: pattern scanning and processing language
• bash: GNU Bourne-Again SHell
  • parameter: basic, expansion & substitution
  • shell variables: variables are set by the shell
• brew: the missing package manager for macOS
• bzip2: block-sorting file compressor
• cat: concatenate files & print on the standard output
• cd: change the current directory
• chgrp: change group ownership
• chmod: change file mode bits
• chown: change file owner & group
• column: columnate lists
• comm: compare two sorted files line by line
• cp: copy files & directories
• cpu: show cpu info - not a command
• crontab: time-based job scheduler
• curl: transfer data from or to a server
• cut: remove sections from each line of files
  • common combo: column | cut
• date: print or set the system date & time
• df: report file system disk space usage - display free space
• diff: compare files line by line
  • better choice: comm
• dig: DNS lookup utility
• docker: base command for the Docker CLI
• dstat: versatile tool for generating system resource statistics
  • iftop: display bandwidth usage on an interface by host
  • iostat: statistics of CPU & IO for devices & partitions
  • vmstat: report virtual memory statistics
• du: estimate file space usage - disk usage
• env: run a program in a modified environment
• expect: interact with programs
• expr: evaluate expressions
• file: determine file type
• find: search for files in a directory hierarchy
• git: the stupid content tracker
• gpg: OpenPGP encryption and signing tool
• grep: print lines matching a pattern
  • zgrep: search possibly compressed files for a regular expression
• head: output the first part of files
• htop: interactive process viewer
• ifconfig: configure a network interface
• ip: show / manipulate routing, devices, policy routing & tunnels
• jobs, bg, fg, disown, wait, …
  • stop (suspend) the execution of processes & continue (resume) their execution at a later point
• join: join lines of two files on a common field
• jq: command-line JSON processor
• kill: terminate or signal a process
  • killall: kill processes by name
• last: show listing of last logged in users
• less: provides `more` emulation plus extensive enhancements
  • more: file perusal filter for paging through text one screenful at a time
• ln: make links between files
• locale: get locale-specific information
• ls: list directory contents
• lsof: list open files
• man: an interface to the on-line reference manuals
• mailx: send mails on CentOS
• msmtp: send mails on macOS - sth wrong?
• mkdir: make directories
• mount: mount a filesystem
  • umount: un-mount a filesystem
• mv: move (rename) files
• mvn: a tool for building & managing any Java-based project
• mysql: MySQL CLI tool - not only a command
• nc: TCP / UDP connect & listen
• netstat: show network status
• nl: number lines of files
• nohup: invoke a utility immune to hangups
• nslookup: query Internet name servers interactively
• os: show os info - not a command
• output: redirect output - not a command
• passwd: modify a user's password
• paste: merge lines of files
• perf: performance analysis tools for Linux
• php: PHP Command Line Interface
• pidstat: report statistics for Linux tasks
• ping: send ICMP ECHO_REQUEST to network hosts
• python: Python Command Line Interface
• ps: process status
• realpath: print the resolved path
• redis-cli: Redis client
• redis-server & redis-sentinel: Redis server
• redis-dump & redis-load: Backup & restore Redis data to and from JSON
• rm: remove files or directories
• rsync: transfer files
• scp: secure copy - remote file copy program
• sed: stream editor for filtering & transforming text
• seq: print a sequence of numbers
• service: run a System V init script
• sleep: delay for a specified amount of time
• sort: sort lines of text files
• ssh: OpenSSH Client - remote login program
• stat: display file or file system status
• su: run a command with substitute user & group ID
• sudo: execute a command as another user
• sysctl: configure kernel parameters at runtime
• systemctl: control systemd & service manager
• tac: concatenate and print files in reverse
• tail: output the last part of files
• tar: pack & compress
• tee: write to standard output & files
• terminal-notifier: send macOS User Notifications
• time: time command execution
• timeout: run a command with a time limit
• tmux: terminal multiplexer
• touch: change file access & modification times
• tr: translate or delete characters
• ulimit: system resource limit to shell
• uname: print system information
• uniq: report or omit repeated lines
• uptime: show how long system has been running
• vim: terminal text editor
• visudo: edit the sudoers file
• w: show who is logged on & what they are doing
• watch: execute a program periodically, showing output fullscreen
• wc: print newline, word, & byte counts for each file
• wget: network downloader
• whereis & which & whatis: locate, show path & description
• whoami: print effective userid
• xargs: build and execute command lines from standard input
• xxd: make a hexdump or do the reverse
• yes: be repetitively affirmative
• zsh: one of shells
• Linux Abbreviations
• CLI Notes - todo oneday

Scene

• automate: expect, yes
• connect: curl, nc, ssh, telnet
• directory: cp, find, ln, ls, mv
• disk: df, du, duf
• monitor status: dstat, htop, lsof, netstat, pidstat, ps, stat, top
• network detect: dig, ifconfig, ip, netstat, nslookup, ping
• string display: cat, head, less, tac, tail
• string process:
  • awk, column, comm, cut, grep,
  • join, jq, paste, sed, sort,
  • tr, uniq, wc, …
• transfer data: ftp, nc, rsync, scp
• write file: tee, >, 2>&1
• notify: terminal-notifier
• http benchmark: ab, watch
• differ output: comm, diff, vimdiff, watch
• run in background: ^z, bg, fg, nohup [CMD] &
• ……

Shell

• Notes: a bash script example
• Terminal Colors

Batch 批处理

• Batch 批处理指令
• Batch 批处理中的特殊符号
• DOS Common Commands
• DOS Environment Variables

JavaScript

Basics

• JavaScript: aka. ECMAScript
• Node.js: a JavaScript runtime built on Chrome's V8 JavaScript engine
  • API Documentation: for 16.X LTS version
• Promise object represents the eventual completion (or failure) of an asynchronous operation and its resulting value
  • async & await: to simplify the syntax necessary to consume promise-based APIs
  • states & fates: clarify the different adjectives surrounding promises
    • States: { settled: [ fulfilled, rejected ] , unsettled: [ pending ] }
    • Fates: [ resolved, unresolved ]
• Event Loop: which the JavaScript concurrency model based on
• Tasks vs. Microtasks:
  • Using microtasks in JavaScript with queueMicrotask
  • In depth: Microtasks and the JavaScript runtime environment
• HTML Living Standard: html.spec.whatwg.org

Code Snippet

• Base Encoding: encode, decode
• Environment: running under Node or browser-like environments
• Jest: for unit tests
• *.d.ts declaration files that functions as an interface to the components compiled in JavaScript
• debugger statement invokes any available debugging functionality, such as setting a breakpoint.
  • Pause code with breakpoints - Chrome DevTools
    • DOM change, XHR/Fetch, event listener, exception and function debug(functionName)

Package Management

• npm: share and borrow packages
• yarn: a package manager that doubles down as project manager
• pnpm: fast, disk space efficient package manager

NPM: the world's largest software registry

• Configuring
  • package.json: a lot of the behavior described in this document is affected by the config settings described in config.
  • package-lock.json: a manifestation of the manifest
  • folders: folder structures used by npm
  • npm semver calculator & Sematic Versioning (external links)
    • About semantic versioning - npm Docs
• Using
  • registry: The JavaScript package registry
  • scope: scoped packages
  • scripts: How npm handles the "scripts" field
  • workspaces: Working with workspaces
  • ……
• Command
  • npm: javascript package manager
  • npm init: create a package.json file
  • npm install: install a package
  • npm link: symlink a package folder
  • npm publish: publish a package
  • npm exec, npx: run a command from a local or remote npm package
  • ……

TypeScript

• TypeScript Deep Dive
• TypeScript: JavaScript with syntax for types
• tsc: compiles the current project, with additional settings
• tsconfig.json: specifies the root files and the compiler options required to compile the project
• Handbook
  • Intro
  • Basics
  • Everyday Types
  • Narrowing
  • More on Functions
  • Object Types
  • Type Manipulation
  • ……

Package

• commitlint: lint commit messages - commitlint.js.org
• eslint: find and fix problems in your JavaScript code - eslint.org
• husky: modern native Git hooks made easy - typicode.github.io
• jest: a delightful JavaScript Testing Framework with a focus on simplicity - jestjs.io
• lerna: a tool for managing JavaScript projects with multiple packages - lerna.js.org
• lodash: a modern JavaScript utility library delivering modularity, performance & extras - lodash.com
• nanoid: a tiny (108 bytes), secure, URL-friendly, unique string ID generator
• next: React Framework for Production - nextjs.org
• razzle: build modern JavaScript applications from zero to production - razzlejs.org
• parcel: zero configuration build tool for XXX - parceljs.org
• superstruct: makes it easy to define interfaces and then validate JavaScript data against them - repo
  • other options: zod, yup | npm trends: yup vs zod vs superstruct
• zod: TypeScript-first schema validation with static type inference - zod.dev - repo
• ……

Java

Basics

• Glossaries
• Install: JDK
• IDE: IntelliJ IDEA usage
• Code Style Guide: Alibaba & Google
• Annotations: Spring / Lombok / FastJson / Jackson / …
• Exceptions: exception class hierarchy / …
• Others: Notes

Package Manager

• Maven: a software project management and comprehension tool
  • Based on the concept of a project object model (POM), Maven can:
    • manage a project's build,
    • reporting and
    • documentation from a central piece of information.
• Gradle
  • From mobile apps to microservices, from small startups to big enterprises,
  • Gradle helps teams build, automate and deliver better software, faster.

Benchmark, Stress Testing & Unit Testing

• Benchmark & Stress Testing: JMH - Java Microbenchmark Harness
• Unit testing & Integration testing: Spock or JUnit
  • Groovy: a multi-faceted language for the Java platform

Code Snippet

• Collection
• Common DTOs
• Deep Clone
• CSV - Comma Separate Value
• Elasticsearch
• Enum
• Excel
• Executor
• HTTP
• JSON
• LocalDateTime
• MyBatis and JDBC
• Number
• OSS - Object Storage Service
• Spring Beans
• Spring ConstraintValidator
• Stream and Optional
• String
• Task

Command Line Tool

• jar: archive tool
• java: application launcher
• javac: compiler
• javap: class file disassembler
• jps: JVM process status - list the instrumented JVMs on the target system
• jcmd: send diagnostic command requests to a running JVM
• jhsdb: HotSpot Debugger
  • attach to a Java process or launch a postmortem debugger to analyze the content of a core dump from a crashed JVM
  • available after JDK 9
• Seldom-used and deprecated
  • javadoc: API documentation generator
  • jstat: monitor JVM statistics
  • jinfo: configuration info - generate configuration info for a specified Java process
  • jmap: memory map - print details of a specified process
  • ~~jhat: Heap Analysis Tool~~ - only available in JDK 8 !
  • jstack: stack trace - print Java stack traces of Java threads for a specified Java process

ASM & CPP

Assembly

Prepare on Windows 7

1. register / cs / ip / CPU / memory
2. endian / register / ds / [addr] / stack
3. pseudo instruction / compile / link / debug / [bx] / loop / seg prefix / mem space
4. stack / data / code / 栈的段 / 多段程序 / 大小写转换 / addressing / si / di
5. bx / si / di / bp / addressing / division / dd / dup / Structural Data
6. jump / offset / jmp / jcxz / loop / dec / bounds checking
7. call / ret / mul / show str (pos, color) / division overflow / show value
8. course design: 公司数据以指定格式在屏幕上显示
9. flag register / adc / sbb / cmp 检测比较结果的条件转移指令，DF 标识和串传送指令 / Tests
10. internal interrupt / interrupt routine / install 中断向量表 / 设置中断向量
11. int instruction / Interrupt Routine / tests
12. port IO / in / out / shl / shr / visit CMOS RAM
13. external interrupt / 接口芯片和端口，可屏蔽|不可屏蔽中断，PC 机键盘的处理过程 / tests
14. 直接定址表 / data / 地址标号 / 在其它段中，计算 sin(x) / tests
15. 用 BIOS 进行键盘输入和磁盘读写 / tests
16. Appendix: 汇编编译器对 jmp 的处理，地址计数器（AC），处理伪操作指令，栈传递参数，无溢出除法…

C++

• C++ Primer 5th
• C++ Interview Book
• C++ Coding Standards
• C++ Macros & Bit Operations
• Effective C++: Part 1 / Part 2 / Part 3 / Part 4

Life

Living

Past

如果你要拥有你从未有过的东西，那么你必须去做你从未做过的事。

Bio: Backend Experience & Education

• Silverhand: Founding Team - Node.js
• YFD: Zebra - Supply Chain - Java
• Alibaba Local Life: 蜂鸟跑腿前台 - Java
• Alibaba Local Life: 众包物流运营&数据组后台 - Java
• Weibo: Video Platform - Java
• Weibo: Mobile API - PHP
• Huawei: Telecom Software Customization - Java Intern.
• SCUT: Software Engineering - Bachelor

Timeline

• After 2018
  • 2022 Feb ~ Apr: Best Gain Everyday
    • from both technology practice and daily life
  • 2018 Winter
  • 2018 Spring ~ 2019 Autumn
  • 2019 ~ 2021 on Weibo
  • How to live | Rehabilitation
  • Moments: 回忆
• 2015 ~ 2017
  • 2017 Summer ~ Winter
  • 2017 Spring
  • 2016 Winter
  • 2016 Fall
  • 2016 Spring & Summer
  • Bye 2015
  • icehe.github.io: previous technology blog
• Before 2015
  • QZone Index of the old posts

愚蠢，懒惰，贫穷，没有梦想。越活越畏畏缩缩，生怕别人发现自己尚未泯灭的野心，还有无能。

Practice

博弈论：理性就是对你的各种东西设定一个优先级，并且能够贯彻执行这个优先级。

• How to Ask: Prepare before asking
  • JFGI: Just Fucking Google It
  • RTFM: Read The Fucking Manual
  • Trade-off: Ask for help if stuck over 15 (or 30) min.
• How to Work: Working Standards
  • 请示工作说方案
  • 布置工作说标准
  • 汇报工作说结果
  • 总结工作说流程
  • 回顾工作说感受
• GTD Flow: Get Thing Done
• PDCA Cycle: Plan → Do → Check → Act or Adjust
• SMART principle: Specific / Measurable / Achievable / Relevant / Time-based
• STAR principle: Situation → Target → Action → Result
• Deployment Checklist: avoid low-level mistakes
• How to Leave:《解除劳动合同告知书》

Read

写一部小说就像在黑夜里开车，你只能看到车灯照亮的部分，但是你却可以走完整个旅程。

好文共赏

• Bookmarks
  • Reading
  • Technology
• Cruel Reality - ZH ver. - digest
  • Nice guy? I never give a shit.
• Life Meaning - digest
  • 因为活着，才去寻找意义。
• Happiness Course - digest
  • 如果你只有一个选择，它让你满意吗？
• Why Unhappy - digest
  • 我，并不特别。
• Poet: 诗和远方 - digest
  • 眼前的苟且，也正是诗和远方。
• Teacher Said - digest
  • 我们用「我能做到什么」来判断和定位自己，而别人用「你已经做过什么」来判断和定位你。
  • 做正确的选择，而不是可以接受的选择。
• Pessimist - digest
  • It's the hardest part when memories remain.
• Anti-Fragile - book
  • 一只火鸡被屠夫喂养了 1000 天，每天都向其分析师证实，屠夫对火鸡的爱的「统计置信度与日俱增」。
• VicodinXYZ's Life Beliefs
  • 决策的第一要务是给自己创造足够多的好选项。大多数决策失败来源于在几个都不够好的选择中反复纠结。
  • 对于日常小决策，决策速度大于决策质量，不要拖；对于重大而难逆转的大决策，要收集足够多信息尽量保证做对。
  • 不是生活中的每一个问题都要解决，和问题共处是人生常态。把精力用在重要的事情上。
• Sspai Time Management
  • 更大的效率来自于重要事情上做得好，而不是在处处做得好，管理精力比管理时间更重要。
  • 在考虑如何提高精力之前，我们得先解决导致精力被浪费的主要原因：精力错位，也就是把最好的时间和状态，浪费在了低产出的任务上。
  • 「不做事」一定是最节省时间、最高效的做事方式，学会「做重要的事」才是掌控时间的终极法门。
  • 提高自控力的一个小窍门是尽量避免在无谓的小事情上做决定。
  • 何谓「真正的休息」呢？不少人习惯将阅读网站和新闻当作一种休息，事实上研究表明，
    • 认知活动（阅读文字、视频等）加重了工作需求产生消极情绪，另一项研究则表明，
    • 对于减少疲惫感，而且通过智能手机应用休息的效果差于与朋友或同事社交。
• The Tyranny of Merit
  • 《 "绩点" 的暴政》 成功者會認為他們的成功是靠自己的才能和努力，而與社會無關，既然成功是我自己的事，那失敗就是輸家自己的錯，這會製造出「才德的驕傲」（meritocratic hubris），對階梯下的人缺乏同理心，甚至不屑和輕蔑，因此更不會有對於共同體內同胞的相互責任。
• How to Be an Imperfectionist
  • The New Way to Self-Acceptance, Fearless Living, and Freedom from Perfectionism
  • 《如何成为不完美主义者》
    • 不那么在意问题本身，更在意在有问题存在的情况下能取得的进展。
    • 不那么在意行动正确与否，更在意是否在行动。
    • 不那么在意所谓时机，更在意任务本身。
  • 个人感受：很棒的书，解决了很多自己对于工作和生活的困惑以及心态问题；但说实话，不能应用到完美主义的职场中。

Friend

To be a better me.

• Jan Fan: Pythonist / Tencent / Applied Mathematics PhD @ Sweden
• Johnson Zhang: Sina Mobile / Didi / Meituan / BioMind @ Beijing
• SF Zhou: ACMer / Microsoft / SenseTime / Weixin / High-Flyer Quant @Hangzhou
• Shiwey Yan: Game Engine Developer / Tencent - Timi @ Shenzhen
• Toxic Johann: Frontend / 360 / UC / Tencent / Tubi @ Beijing
• ME: Backend / Weibo / Alibaba / YFD / Silverhand @ Beijing
• …

靡不有初，鮮克有終。