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

register / cs / ip / CPU / memory
endian / register / ds / [addr] / stack
pseudo instruction / compile / link / debug / [bx] / loop / seg prefix / mem space
stack / data / code / 栈的段 / 多段程序 / 大小写转换 / addressing / si / di
bx / si / di / bp / addressing / division / dd / dup / Structural Data
jump / offset / jmp / jcxz / loop / dec / bounds checking
call / ret / mul / show str (pos, color) / division overflow / show value
course design: 公司数据以指定格式在屏幕上显示
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
internal interrupt / interrupt routine / install 中断向量表 / 设置中断向量
int instruction / Interrupt Routine / tests
port IO / in / out / shl / shr / visit CMOS RAM
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
直接定址表 / data / 地址标号 / 在其它段中，计算 sin(x) / tests
用 BIOS 进行键盘输入和磁盘读写 / tests
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。

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