René's URL Explorer Experiment

Title: GitHub - NotFound9/interviewGuide: 《大厂面试指北》——包括Java基础、JVM、数据库、mysql、redis、计算机网络、算法、数据结构、操作系统、设计模式、系统设计、框架原理。

Open Graph Title: GitHub - NotFound9/interviewGuide: 《大厂面试指北》——包括Java基础、JVM、数据库、mysql、redis、计算机网络、算法、数据结构、操作系统、设计模式、系统设计、框架原理。

X Title: GitHub - NotFound9/interviewGuide: 《大厂面试指北》——包括Java基础、JVM、数据库、mysql、redis、计算机网络、算法、数据结构、操作系统、设计模式、系统设计、框架原理。

Description: 《大厂面试指北》——包括Java基础、JVM、数据库、mysql、redis、计算机网络、算法、数据结构、操作系统、设计模式、系统设计、框架原理。 - NotFound9/interviewGuide

Open Graph Description: 《大厂面试指北》——包括Java基础、JVM、数据库、mysql、redis、计算机网络、算法、数据结构、操作系统、设计模式、系统设计、框架原理。 - NotFound9/interviewGuide

X Description: 《大厂面试指北》——包括Java基础、JVM、数据库、mysql、redis、计算机网络、算法、数据结构、操作系统、设计模式、系统设计、框架原理。 - NotFound9/interviewGuide

Opengraph URL: https://github.com/NotFound9/interviewGuide

X: @github

direct link

Domain: patch-diff.githubusercontent.com

route-pattern	/:user_id/:repository
route-controller	files
route-action	disambiguate
fetch-nonce	v2:3acc8e72-025b-2b67-3e5a-d59861988178
current-catalog-service-hash	f3abb0cc802f3d7b95fc8762b94bdcb13bf39634c40c357301c4aa1d67a256fb
request-id	9F0A:199F7E:24A3278:33878E8:6970F5BE
html-safe-nonce	ddad2943eceebce21aef923fe1955b5a7c54bc62b19e4af82bd8ddd5aea41e0d
visitor-payload	eyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiI5RjBBOjE5OUY3RToyNEEzMjc4OjMzODc4RTg6Njk3MEY1QkUiLCJ2aXNpdG9yX2lkIjoiNzQyNDc1MjAzOTg2Mzg0MjIzOCIsInJlZ2lvbl9lZGdlIjoiaWFkIiwicmVnaW9uX3JlbmRlciI6ImlhZCJ9
visitor-hmac	998cdbb14c3b5b17f490183883d796d00326d0b35bb3474fc7618cc4d3afc0fc
hovercard-subject-tag	repository:56664648
github-keyboard-shortcuts	repository,copilot
google-site-verification	Apib7-x98H0j5cPqHWwSMm6dNU4GmODRoqxLiDzdx9I
octolytics-url	https://collector.github.com/github/collect
analytics-location	//
fb:app_id	1401488693436528
apple-itunes-app	app-id=1477376905, app-argument=https://github.com/NotFound9/interviewGuide
twitter:image	https://opengraph.githubassets.com/80582ea95d0003428c803ee8614047062b8da4df34bec579937ed21f10581476/NotFound9/interviewGuide
twitter:card	summary_large_image
og:image	https://opengraph.githubassets.com/80582ea95d0003428c803ee8614047062b8da4df34bec579937ed21f10581476/NotFound9/interviewGuide
og:image:alt	《大厂面试指北》——包括Java基础、JVM、数据库、mysql、redis、计算机网络、算法、数据结构、操作系统、设计模式、系统设计、框架原理。 - NotFound9/interviewGuide
og:image:width	1200
og:image:height	600
og:site_name	GitHub
og:type	object
hostname	github.com
expected-hostname	github.com
None	1b239ebed690c3053869ff31a3b7597834c25673659d63e7b6fd6a9b5d7853de
turbo-cache-control	no-preview
go-import	github.com/NotFound9/interviewGuide git https://github.com/NotFound9/interviewGuide.git
octolytics-dimension-user_id	16741621
octolytics-dimension-user_login	NotFound9
octolytics-dimension-repository_id	56664648
octolytics-dimension-repository_nwo	NotFound9/interviewGuide
octolytics-dimension-repository_public	true
octolytics-dimension-repository_is_fork	false
octolytics-dimension-repository_network_root_id	56664648
octolytics-dimension-repository_network_root_nwo	NotFound9/interviewGuide
turbo-body-classes	logged-out env-production page-responsive
disable-turbo	false
browser-stats-url	https://api.github.com/_private/browser/stats
browser-errors-url	https://api.github.com/_private/browser/errors
release	aeacfd55297f3de5395c83f200ac35d1f474115e
ui-target	full
theme-color	#1e2327
color-scheme	light dark

Links:

Skip to content	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide#start-of-content
	https://patch-diff.githubusercontent.com/
Sign in	https://patch-diff.githubusercontent.com/login?return_to=https%3A%2F%2Fgithub.com%2FNotFound9%2FinterviewGuide
GitHub CopilotWrite better code with AI	https://github.com/features/copilot
GitHub SparkBuild and deploy intelligent apps	https://github.com/features/spark
GitHub ModelsManage and compare prompts	https://github.com/features/models
MCP RegistryNewIntegrate external tools	https://github.com/mcp
ActionsAutomate any workflow	https://github.com/features/actions
CodespacesInstant dev environments	https://github.com/features/codespaces
IssuesPlan and track work	https://github.com/features/issues
Code ReviewManage code changes	https://github.com/features/code-review
GitHub Advanced SecurityFind and fix vulnerabilities	https://github.com/security/advanced-security
Code securitySecure your code as you build	https://github.com/security/advanced-security/code-security
Secret protectionStop leaks before they start	https://github.com/security/advanced-security/secret-protection
Why GitHub	https://github.com/why-github
Documentation	https://docs.github.com
Blog	https://github.blog
Changelog	https://github.blog/changelog
Marketplace	https://github.com/marketplace
View all features	https://github.com/features
Enterprises	https://github.com/enterprise
Small and medium teams	https://github.com/team
Startups	https://github.com/enterprise/startups
Nonprofits	https://github.com/solutions/industry/nonprofits
App Modernization	https://github.com/solutions/use-case/app-modernization
DevSecOps	https://github.com/solutions/use-case/devsecops
DevOps	https://github.com/solutions/use-case/devops
CI/CD	https://github.com/solutions/use-case/ci-cd
View all use cases	https://github.com/solutions/use-case
Healthcare	https://github.com/solutions/industry/healthcare
Financial services	https://github.com/solutions/industry/financial-services
Manufacturing	https://github.com/solutions/industry/manufacturing
Government	https://github.com/solutions/industry/government
View all industries	https://github.com/solutions/industry
View all solutions	https://github.com/solutions
AI	https://github.com/resources/articles?topic=ai
Software Development	https://github.com/resources/articles?topic=software-development
DevOps	https://github.com/resources/articles?topic=devops
Security	https://github.com/resources/articles?topic=security
View all topics	https://github.com/resources/articles
Customer stories	https://github.com/customer-stories
Events & webinars	https://github.com/resources/events
Ebooks & reports	https://github.com/resources/whitepapers
Business insights	https://github.com/solutions/executive-insights
GitHub Skills	https://skills.github.com
Documentation	https://docs.github.com
Customer support	https://support.github.com
Community forum	https://github.com/orgs/community/discussions
Trust center	https://github.com/trust-center
Partners	https://github.com/partners
GitHub SponsorsFund open source developers	https://github.com/sponsors
Security Lab	https://securitylab.github.com
Maintainer Community	https://maintainers.github.com
Accelerator	https://github.com/accelerator
Archive Program	https://archiveprogram.github.com
Topics	https://github.com/topics
Trending	https://github.com/trending
Collections	https://github.com/collections
Enterprise platformAI-powered developer platform	https://github.com/enterprise
GitHub Advanced SecurityEnterprise-grade security features	https://github.com/security/advanced-security
Copilot for BusinessEnterprise-grade AI features	https://github.com/features/copilot/copilot-business
Premium SupportEnterprise-grade 24/7 support	https://github.com/premium-support
Pricing	https://github.com/pricing
Search syntax tips	https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
documentation	https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
Sign in	https://patch-diff.githubusercontent.com/login?return_to=https%3A%2F%2Fgithub.com%2FNotFound9%2FinterviewGuide
Sign up	https://patch-diff.githubusercontent.com/signup?ref_cta=Sign+up&ref_loc=header+logged+out&ref_page=%2F%3Cuser-name%3E%2F%3Crepo-name%3E&source=header-repo&source_repo=NotFound9%2FinterviewGuide
Reload	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide
Reload	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide
Reload	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide
NotFound9	https://patch-diff.githubusercontent.com/NotFound9
interviewGuide	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide
Notifications	https://patch-diff.githubusercontent.com/login?return_to=%2FNotFound9%2FinterviewGuide
Fork 687	https://patch-diff.githubusercontent.com/login?return_to=%2FNotFound9%2FinterviewGuide
Star 4k	https://patch-diff.githubusercontent.com/login?return_to=%2FNotFound9%2FinterviewGuide
juejin.cn/user/430664288569453	https://juejin.cn/user/430664288569453
4k stars	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/stargazers
687 forks	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/forks
Branches	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/branches
Tags	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/tags
Activity	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/activity
Star	https://patch-diff.githubusercontent.com/login?return_to=%2FNotFound9%2FinterviewGuide
Notifications	https://patch-diff.githubusercontent.com/login?return_to=%2FNotFound9%2FinterviewGuide
Code	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide
Issues 12	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/issues
Pull requests 2	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/pulls
Actions	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/actions
Projects 0	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/projects
Security Uh oh! There was an error while loading. Please reload this page.	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/security
Please reload this page	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide
Insights	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/pulse
Code	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide
Issues	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/issues
Pull requests	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/pulls
Actions	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/actions
Projects	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/projects
Security	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/security
Insights	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/pulse
Branches	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/branches
Tags	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/tags
	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/branches
	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/tags
309 Commits	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/commits/master/
	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/commits/master/
docs	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/tree/master/docs
docs	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/tree/master/docs
static	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/tree/master/static
static	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/tree/master/static
.gitattributes	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/.gitattributes
.gitattributes	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/.gitattributes
.gitignore	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/.gitignore
.gitignore	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/.gitignore
.nojekyll	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/.nojekyll
.nojekyll	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/.nojekyll
README.md	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/README.md
README.md	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/README.md
_sidebar.md	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/_sidebar.md
_sidebar.md	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/_sidebar.md
index.html	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/index.html
index.html	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/index.html
README	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide
	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide#大厂面试指北
http://notfound9.github.io/interviewGuide/	http://notfound9.github.io/interviewGuide/
https://github.com/NotFound9/interviewGuide	https://github.com/NotFound9/interviewGuide
https://juejin.im/user/5b370a42e51d4558ce5eb969	https://juejin.im/user/5b370a42e51d4558ce5eb969
	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide#为什么要做这个开源项目
	https://camo.githubusercontent.com/de0cfb0959f4b5f365ba710778db522b823ad5672e0bc7237a982367b2a13bb1/687474703a2f2f6e6f74666f756e64392e6769746875622e696f2f696e7465727669657747756964652f7374617469632f696d616765312e6a7067
	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide#目录
首页	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/README.md
基础	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaBasic.md
1.Java中的多态是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaBasic.md#Java%E4%B8%AD%E7%9A%84%E5%A4%9A%E6%80%81%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
2.Java中变量，代码块，构造器之间执行顺序是怎么样的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaBasic.md#java%E4%B8%AD%E5%8F%98%E9%87%8F%EF%BC%8C%E4%BB%A3%E7%A0%81%E5%9D%97%EF%BC%8C%E6%9E%84%E9%80%A0%E5%99%A8%E4%B9%8B%E9%97%B4%E6%89%A7%E8%A1%8C%E9%A1%BA%E5%BA%8F%E6%98%AF%E6%80%8E%E4%B9%88%E6%A0%B7%E7%9A%84%EF%BC%9F
3.final关键字有哪些作用？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaBasic.md#final%E5%85%B3%E9%94%AE%E5%AD%97%E6%9C%89%E5%93%AA%E4%BA%9B%E4%BD%9C%E7%94%A8%EF%BC%9F
4.Integer类会进行缓存吗？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaBasic.md#Integer%E7%B1%BB%E4%BC%9A%E8%BF%9B%E8%A1%8C%E7%BC%93%E5%AD%98%E5%90%97%EF%BC%9F
5.抽象类有哪些特点？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaBasic.md#%E6%8A%BD%E8%B1%A1%E7%B1%BB%E6%9C%89%E5%93%AA%E4%BA%9B%E7%89%B9%E7%82%B9%EF%BC%9F
6.String，StringBuffer和StringBuilder之间的区别是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaBasic.md#String%EF%BC%8CStringBuffer%E5%92%8CStringBuilder%E4%B9%8B%E9%97%B4%E7%9A%84%E5%8C%BA%E5%88%AB%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
7.编译型编程语言，解释型编程语言，伪编译型语言的区别是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaBasic.md#%E7%BC%96%E8%AF%91%E5%9E%8B%E7%BC%96%E7%A8%8B%E8%AF%AD%E8%A8%80%EF%BC%8C%E8%A7%A3%E9%87%8A%E5%9E%8B%E7%BC%96%E7%A8%8B%E8%AF%AD%E8%A8%80%EF%BC%8C%E4%BC%AA%E7%BC%96%E8%AF%91%E5%9E%8B%E8%AF%AD%E8%A8%80%E7%9A%84%E5%8C%BA%E5%88%AB%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
8.Java中的访问控制符有哪些？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaBasic.md#Java%E4%B8%AD%E7%9A%84%E8%AE%BF%E9%97%AE%E6%8E%A7%E5%88%B6%E7%AC%A6%E6%9C%89%E5%93%AA%E4%BA%9B%EF%BC%9F
9.Java的构造器有哪些特点？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaBasic.md#Java%E7%9A%84%E6%9E%84%E9%80%A0%E5%99%A8%E6%9C%89%E5%93%AA%E4%BA%9B%E7%89%B9%E7%82%B9%EF%BC%9F
10.Java中的内部类是怎么样的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaBasic.md#Java%E4%B8%AD%E7%9A%84%E5%86%85%E9%83%A8%E7%B1%BB%E6%98%AF%E6%80%8E%E4%B9%88%E6%A0%B7%E7%9A%84%EF%BC%9F
11.Java中的注解是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaBasic.md#Java%E4%B8%AD%E7%9A%84%E6%B3%A8%E8%A7%A3%E6%98%AF%E4%BB%80%E4%B9%88?
12.为什么hashCode()和equal()方法要一起重写？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaBasic.md#%E4%B8%BA%E4%BB%80%E4%B9%88hashCode()%E5%92%8Cequal()%E6%96%B9%E6%B3%95%E8%A6%81%E4%B8%80%E8%B5%B7%E9%87%8D%E5%86%99%EF%BC%9F
13.Java中有哪些数据类型？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaBasic.md#Java%E4%B8%AD%E6%9C%89%E5%93%AA%E4%BA%9B%E6%95%B0%E6%8D%AE%E7%B1%BB%E5%9E%8B%EF%BC%9F
14.包装类型和基本类型的区别是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaBasic.md#%E5%8C%85%E8%A3%85%E7%B1%BB%E5%9E%8B%E5%92%8C%E5%9F%BA%E6%9C%AC%E7%B1%BB%E5%9E%8B%E7%9A%84%E5%8C%BA%E5%88%AB%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
ArrayList和LinkedList	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/ArrayList.md
1.ArrayList与LinkedList的区别是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/ArrayList.md#ArrayList%E4%B8%8ELinkedList%E7%9A%84%E5%8C%BA%E5%88%AB%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
2.怎么使ArrayList，LinkedList变成线程安全的呢？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/ArrayList.md#%E6%80%8E%E4%B9%88%E4%BD%BFArrayList%EF%BC%8CLinkedList%E5%8F%98%E6%88%90%E7%BA%BF%E7%A8%8B%E5%AE%89%E5%85%A8%E7%9A%84%E5%91%A2%EF%BC%9F
3.ArrayList遍历时删除元素有哪些方法？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/ArrayList.md#ArrayList%E9%81%8D%E5%8E%86%E6%97%B6%E5%88%A0%E9%99%A4%E5%85%83%E7%B4%A0%E6%9C%89%E5%93%AA%E4%BA%9B%E6%96%B9%E6%B3%95%EF%BC%9F
4.ConcurrentModificationException是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/ArrayList.md#ConcurrentModificationException%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
5.java容器类的层次是怎么样的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/ArrayList.md#java%E5%AE%B9%E5%99%A8%E7%B1%BB%E7%9A%84%E5%B1%82%E6%AC%A1%E6%98%AF%E6%80%8E%E4%B9%88%E6%A0%B7%E7%9A%84%EF%BC%9F
HashMap和ConcurrentHashMap	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/HashMap.md
1.HashMap添加一个键值对的过程是怎么样的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/HashMap.md#HashMap%E6%B7%BB%E5%8A%A0%E4%B8%80%E4%B8%AA%E9%94%AE%E5%80%BC%E5%AF%B9%E7%9A%84%E8%BF%87%E7%A8%8B%E6%98%AF%E6%80%8E%E4%B9%88%E6%A0%B7%E7%9A%84%EF%BC%9F
2.ConcurrentHashMap添加一个键值对的过程是怎么样的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/HashMap.md#ConcurrentHashMap%E6%B7%BB%E5%8A%A0%E4%B8%80%E4%B8%AA%E9%94%AE%E5%80%BC%E5%AF%B9%E7%9A%84%E8%BF%87%E7%A8%8B%E6%98%AF%E6%80%8E%E4%B9%88%E6%A0%B7%E7%9A%84%EF%BC%9F
3.HashMap与HashTable，ConcurrentHashMap的区别是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/HashMap.md#HashMap%E4%B8%8EHashTable%EF%BC%8CConcurrentHashMap%E7%9A%84%E5%8C%BA%E5%88%AB%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
4.HashMap扩容后是否需要rehash？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/HashMap.md#HashMap%E6%89%A9%E5%AE%B9%E5%90%8E%E6%98%AF%E5%90%A6%E9%9C%80%E8%A6%81rehash%EF%BC%9F
5.HashMap扩容是怎样扩容的，为什么都是2的N次幂的大小？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/HashMap.md#HashMap%E6%89%A9%E5%AE%B9%E6%98%AF%E6%80%8E%E6%A0%B7%E6%89%A9%E5%AE%B9%E7%9A%84%EF%BC%8C%E4%B8%BA%E4%BB%80%E4%B9%88%E9%83%BD%E6%98%AF2%E7%9A%84N%E6%AC%A1%E5%B9%82%E7%9A%84%E5%A4%A7%E5%B0%8F%EF%BC%9F
6.ConcurrentHashMap是怎么记录元素个数size的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/HashMap.md#ConcurrentHashMap%E6%98%AF%E6%80%8E%E4%B9%88%E8%AE%B0%E5%BD%95%E5%85%83%E7%B4%A0%E4%B8%AA%E6%95%B0size%E7%9A%84%EF%BC%9F
7.为什么ConcurrentHashMap，HashTable不支持key，value为null？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/HashMap.md#%E4%B8%BA%E4%BB%80%E4%B9%88ConcurrentHashMap%EF%BC%8CHashTable%E4%B8%8D%E6%94%AF%E6%8C%81key%EF%BC%8Cvalue%E4%B8%BAnull%EF%BC%9F
8.HashSet和HashMap的区别？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/HashMap.md#HashSet%E5%92%8CHashMap%E7%9A%84%E5%8C%BA%E5%88%AB%EF%BC%9F
9.HashMap遍历时删除元素的有哪些实现方法？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/HashMap.md#HashMap%E9%81%8D%E5%8E%86%E6%97%B6%E5%88%A0%E9%99%A4%E5%85%83%E7%B4%A0%E7%9A%84%E6%9C%89%E5%93%AA%E4%BA%9B%E5%AE%9E%E7%8E%B0%E6%96%B9%E6%B3%95%EF%BC%9F
多线程	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaMultiThread.md
1.进程与线程的区别是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaMultiThread.md#%E8%BF%9B%E7%A8%8B%E4%B8%8E%E7%BA%BF%E7%A8%8B%E7%9A%84%E5%8C%BA%E5%88%AB%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
2.进程间如何通信？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaMultiThread.md#%E8%BF%9B%E7%A8%8B%E9%97%B4%E5%A6%82%E4%BD%95%E9%80%9A%E4%BF%A1%EF%BC%9F
3.Java中单例有哪些写法？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaMultiThread.md#Java%E4%B8%AD%E5%8D%95%E4%BE%8B%E6%9C%89%E5%93%AA%E4%BA%9B%E5%86%99%E6%B3%95%EF%BC%9F
4.Java中创建线程有哪些方式?	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaMultiThread.md#Java%E4%B8%AD%E5%88%9B%E5%BB%BA%E7%BA%BF%E7%A8%8B%E6%9C%89%E5%93%AA%E4%BA%9B%E6%96%B9%E5%BC%8F?
5.如何解决序列化时可以创建出单例对象的问题?	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaMultiThread.md#%E5%A6%82%E4%BD%95%E8%A7%A3%E5%86%B3%E5%BA%8F%E5%88%97%E5%8C%96%E6%97%B6%E5%8F%AF%E4%BB%A5%E5%88%9B%E5%BB%BA%E5%87%BA%E5%8D%95%E4%BE%8B%E5%AF%B9%E8%B1%A1%E7%9A%84%E9%97%AE%E9%A2%98?
6.volatile关键字有什么用？怎么理解可见性，一般什么场景去用可见性？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaMultiThread.md#volatile%E5%85%B3%E9%94%AE%E5%AD%97%E6%9C%89%E4%BB%80%E4%B9%88%E7%94%A8%EF%BC%9F%E6%80%8E%E4%B9%88%E7%90%86%E8%A7%A3%E5%8F%AF%E8%A7%81%E6%80%A7%EF%BC%8C%E4%B8%80%E8%88%AC%E4%BB%80%E4%B9%88%E5%9C%BA%E6%99%AF%E5%8E%BB%E7%94%A8%E5%8F%AF%E8%A7%81%E6%80%A7%EF%BC%9F
7.Java中线程的状态是怎么样的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaMultiThread.md#Java%E4%B8%AD%E7%BA%BF%E7%A8%8B%E7%9A%84%E7%8A%B6%E6%80%81%E6%98%AF%E6%80%8E%E4%B9%88%E6%A0%B7%E7%9A%84%EF%BC%9F
8.wait()，join()，sleep()方法有什么作用？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaMultiThread.md#wait()%EF%BC%8Cjoin()%EF%BC%8Csleep()%E6%96%B9%E6%B3%95%E6%9C%89%E4%BB%80%E4%B9%88%E4%BD%9C%E7%94%A8%EF%BC%9F
9.Thread.sleep(),Object.wait(),LockSupport.park()有什么区别？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaMultiThread.md#Thread.sleep(),Object.wait(),LockSupport.park()%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB%EF%BC%9F
10.谈一谈你对线程中断的理解？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaMultiThread.md#%E8%B0%88%E4%B8%80%E8%B0%88%E4%BD%A0%E5%AF%B9%E7%BA%BF%E7%A8%8B%E4%B8%AD%E6%96%AD%E7%9A%84%E7%90%86%E8%A7%A3%EF%BC%9F
11.线程间怎么通信？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaMultiThread.md#%E7%BA%BF%E7%A8%8B%E9%97%B4%E6%80%8E%E4%B9%88%E9%80%9A%E4%BF%A1%EF%BC%9F
12.怎么实现实现一个生产者消费者？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaMultiThread.md#%E6%80%8E%E4%B9%88%E5%AE%9E%E7%8E%B0%E5%AE%9E%E7%8E%B0%E4%B8%80%E4%B8%AA%E7%94%9F%E4%BA%A7%E8%80%85%E6%B6%88%E8%B4%B9%E8%80%85%EF%BC%9F
13.谈一谈你对线程池的理解？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaMultiThread.md#%E8%B0%88%E4%B8%80%E8%B0%88%E4%BD%A0%E5%AF%B9%E7%BA%BF%E7%A8%8B%E6%B1%A0%E7%9A%84%E7%90%86%E8%A7%A3%EF%BC%9F
14.线程池有哪些状态？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaMultiThread.md#%E7%BA%BF%E7%A8%8B%E6%B1%A0%E6%9C%89%E5%93%AA%E4%BA%9B%E7%8A%B6%E6%80%81%EF%BC%9F
锁相关	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/Lock.md
1.sychronize的实现原理是怎么样的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/Lock.md#sychronize%E7%9A%84%E5%AE%9E%E7%8E%B0%E5%8E%9F%E7%90%86%E6%98%AF%E6%80%8E%E4%B9%88%E6%A0%B7%E7%9A%84%EF%BC%9F
2.AbstractQueuedSynchronizer(缩写为AQS)是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/Lock.md#AbstractQueuedSynchronizer(%E7%BC%A9%E5%86%99%E4%B8%BAAQS)%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
3.悲观锁和乐观锁是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/Lock.md#%E6%82%B2%E8%A7%82%E9%94%81%E5%92%8C%E4%B9%90%E8%A7%82%E9%94%81%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
基础	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisBasic.md
1.Redis是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisBasic.md#Redis%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
2.Redis过期key是怎么样清理的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisBasic.md#Redis%E8%BF%87%E6%9C%9Fkey%E6%98%AF%E6%80%8E%E4%B9%88%E6%A0%B7%E6%B8%85%E7%90%86%E7%9A%84%EF%BC%9F
3.Redis为什么是单线程的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisBasic.md#Redis%E4%B8%BA%E4%BB%80%E4%B9%88%E6%98%AF%E5%8D%95%E7%BA%BF%E7%A8%8B%E7%9A%84%EF%BC%9F
4.Redis的性能为什么这么高？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisBasic.md#Redis%E7%9A%84%E6%80%A7%E8%83%BD%E4%B8%BA%E4%BB%80%E4%B9%88%E8%BF%99%E4%B9%88%E9%AB%98%EF%BC%9F
5.Linux中IO模型一共有哪些？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisBasic.md#Linux%E4%B8%ADIO%E6%A8%A1%E5%9E%8B%E4%B8%80%E5%85%B1%E6%9C%89%E5%93%AA%E4%BA%9B%EF%BC%9F
6.同步与异步的区别是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisBasic.md#%E5%90%8C%E6%AD%A5%E4%B8%8E%E5%BC%82%E6%AD%A5%E7%9A%84%E5%8C%BA%E5%88%AB%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
7.阻塞与非阻塞的区别是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisBasic.md#%E9%98%BB%E5%A1%9E%E4%B8%8E%E9%9D%9E%E9%98%BB%E5%A1%9E%E7%9A%84%E5%8C%BA%E5%88%AB%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
8.如何解决Redis缓存穿透问题？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisBasic.md#%E5%A6%82%E4%BD%95%E8%A7%A3%E5%86%B3Redis%E7%BC%93%E5%AD%98%E7%A9%BF%E9%80%8F%E9%97%AE%E9%A2%98%EF%BC%9F
9.如何解决Redis缓存击穿问题？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisBasic.md#%E5%A6%82%E4%BD%95%E8%A7%A3%E5%86%B3Redis%E7%BC%93%E5%AD%98%E5%87%BB%E7%A9%BF%E9%97%AE%E9%A2%98%EF%BC%9F
10.如何解决Redis缓存雪崩问题？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisBasic.md#%E5%A6%82%E4%BD%95%E8%A7%A3%E5%86%B3Redis%E7%BC%93%E5%AD%98%E9%9B%AA%E5%B4%A9%E9%97%AE%E9%A2%98%EF%BC%9F
11.如何解决缓存与数据库的数据一致性问题？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisBasic.md#%E5%A6%82%E4%BD%95%E8%A7%A3%E5%86%B3%E7%BC%93%E5%AD%98%E4%B8%8E%E6%95%B0%E6%8D%AE%E5%BA%93%E7%9A%84%E6%95%B0%E6%8D%AE%E4%B8%80%E8%87%B4%E6%80%A7%E9%97%AE%E9%A2%98%EF%BC%9F
数据结构	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisDataStruct.md
1.Redis常见的数据结构有哪些？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisDataStruct.md#Redis%E5%B8%B8%E8%A7%81%E7%9A%84%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84%E6%9C%89%E5%93%AA%E4%BA%9B%EF%BC%9F
2.谈一谈你对Redis中简单动态字符串的理解？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisDataStruct.md#%E8%B0%88%E4%B8%80%E8%B0%88%E4%BD%A0%E5%AF%B9Redis%E4%B8%AD%E7%AE%80%E5%8D%95%E5%8A%A8%E6%80%81%E5%AD%97%E7%AC%A6%E4%B8%B2%E7%9A%84%E7%90%86%E8%A7%A3%EF%BC%9F
3.谈一谈你对Redis中hash对象的理解？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisDataStruct.md#%E8%B0%88%E4%B8%80%E8%B0%88%E4%BD%A0%E5%AF%B9Redis%E4%B8%ADhash%E5%AF%B9%E8%B1%A1%E7%9A%84%E7%90%86%E8%A7%A3%EF%BC%9F
4.谈一谈你对Redis中List的理解？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisDataStruct.md#%E8%B0%88%E4%B8%80%E8%B0%88%E4%BD%A0%E5%AF%B9Redis%E4%B8%ADList%E7%9A%84%E7%90%86%E8%A7%A3%EF%BC%9F
5.谈一谈你对Redis中Set的理解？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisDataStruct.md#%E8%B0%88%E4%B8%80%E8%B0%88%E4%BD%A0%E5%AF%B9Redis%E4%B8%ADSet%E7%9A%84%E7%90%86%E8%A7%A3%EF%BC%9F
6.谈一谈你对Redis中有序集合ZSet的理解？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisDataStruct.md#%E8%B0%88%E4%B8%80%E8%B0%88%E4%BD%A0%E5%AF%B9Redis%E4%B8%AD%E6%9C%89%E5%BA%8F%E9%9B%86%E5%90%88ZSet%E7%9A%84%E7%90%86%E8%A7%A3%EF%BC%9F
7.布隆过滤器是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisDataStruct.md#%E5%B8%83%E9%9A%86%E8%BF%87%E6%BB%A4%E5%99%A8%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
持久化(AOF和RDB)	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisStore.md
1.Redis的持久化是怎么实现的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisStore.md#Redis%E7%9A%84%E6%8C%81%E4%B9%85%E5%8C%96%E6%98%AF%E6%80%8E%E4%B9%88%E5%AE%9E%E7%8E%B0%E7%9A%84%EF%BC%9F
2.AOF和RDB的区别是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisStore.md#AOF%E5%92%8CRDB%E7%9A%84%E5%8C%BA%E5%88%AB%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
3.怎么防止AOF文件越来越大？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisStore.md#%E6%80%8E%E4%B9%88%E9%98%B2%E6%AD%A2AOF%E6%96%87%E4%BB%B6%E8%B6%8A%E6%9D%A5%E8%B6%8A%E5%A4%A7%EF%BC%9F
4.Redis持久化策略该如何进行选择？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisStore.md#Redis%E6%8C%81%E4%B9%85%E5%8C%96%E7%AD%96%E7%95%A5%E8%AF%A5%E5%A6%82%E4%BD%95%E8%BF%9B%E8%A1%8C%E9%80%89%E6%8B%A9%EF%BC%9F
高可用(主从切换和哨兵机制)	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisUserful.md
1.Redis主从同步是怎么实现的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisUserful.md#Redis%E4%B8%BB%E4%BB%8E%E5%90%8C%E6%AD%A5%E6%98%AF%E6%80%8E%E4%B9%88%E5%AE%9E%E7%8E%B0%E7%9A%84%EF%BC%9F
2.Redis中哨兵是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisUserful.md#Redis%E4%B8%AD%E5%93%A8%E5%85%B5%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
3.客户端是怎么接入哨兵系统的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisUserful.md#%E5%AE%A2%E6%88%B7%E7%AB%AF%E6%98%AF%E6%80%8E%E4%B9%88%E6%8E%A5%E5%85%A5%E5%93%A8%E5%85%B5%E7%B3%BB%E7%BB%9F%E7%9A%84%EF%BC%9F
4.Redis哨兵系统是怎么实现自动故障转移的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisUserful.md#Redis%E5%93%A8%E5%85%B5%E7%B3%BB%E7%BB%9F%E6%98%AF%E6%80%8E%E4%B9%88%E5%AE%9E%E7%8E%B0%E8%87%AA%E5%8A%A8%E6%95%85%E9%9A%9C%E8%BD%AC%E7%A7%BB%E7%9A%84%EF%BC%9F
5.谈一谈你对Redis Cluster的理解？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisUserful.md#%E8%B0%88%E4%B8%80%E8%B0%88%E4%BD%A0%E5%AF%B9RedisCluster%E7%9A%84%E7%90%86%E8%A7%A3%EF%BC%9F
6.RedisCluster是怎么实现数据分片的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisUserful.md#RedisCluster%E6%98%AF%E6%80%8E%E4%B9%88%E5%AE%9E%E7%8E%B0%E6%95%B0%E6%8D%AE%E5%88%86%E7%89%87%E7%9A%84%EF%BC%9F
7.RedisCluster是怎么做故障转移和发现的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisUserful.md#RedisCluster%E6%98%AF%E6%80%8E%E4%B9%88%E5%81%9A%E6%95%85%E9%9A%9C%E8%BD%AC%E7%A7%BB%E5%92%8C%E5%8F%91%E7%8E%B0%E7%9A%84%EF%BC%9F
基础	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md
1.一条MySQL更新语句的执行过程是什么样的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#%E4%B8%80%E6%9D%A1MySQL%E6%9B%B4%E6%96%B0%E8%AF%AD%E5%8F%A5%E7%9A%84%E6%89%A7%E8%A1%8C%E8%BF%87%E7%A8%8B%E6%98%AF%E4%BB%80%E4%B9%88%E6%A0%B7%E7%9A%84%EF%BC%9F
2.脏页是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#%E8%84%8F%E9%A1%B5%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
3.Checkpoint是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#Checkpoint%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
4.undo log，redo log，bin log是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#undolog%EF%BC%8Credolog%EF%BC%8Cbinlog%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
5.MySQL中的事务是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#MySQL%E4%B8%AD%E7%9A%84%E4%BA%8B%E5%8A%A1%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
6.MySQL的隔离级别是怎么样的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#MySQL%E7%9A%84%E9%9A%94%E7%A6%BB%E7%BA%A7%E5%88%AB%E6%98%AF%E6%80%8E%E4%B9%88%E6%A0%B7%E7%9A%84%EF%BC%9F
7.MVCC的实现原理是怎么样的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#MVCC%E7%9A%84%E5%AE%9E%E7%8E%B0%E5%8E%9F%E7%90%86%E6%98%AF%E6%80%8E%E4%B9%88%E6%A0%B7%E7%9A%84%EF%BC%9F
8.MySQL是怎么解决幻读的问题的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#MySQL%E6%98%AF%E6%80%8E%E4%B9%88%E8%A7%A3%E5%86%B3%E5%B9%BB%E8%AF%BB%E7%9A%84%E9%97%AE%E9%A2%98%E7%9A%84%EF%BC%9F
9.MySQL中有哪些锁？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#MySQL%E4%B8%AD%E6%9C%89%E5%93%AA%E4%BA%9B%E9%94%81%EF%BC%9F
10.B树是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#B%E6%A0%91%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
11.B树与B+树的区别是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#B%E6%A0%91%E4%B8%8EB+%E6%A0%91%E7%9A%84%E5%8C%BA%E5%88%AB%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
12.索引是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#%E7%B4%A2%E5%BC%95%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
13.字符串索引和数字类型索引的区别？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#%E5%AD%97%E7%AC%A6%E4%B8%B2%E7%B4%A2%E5%BC%95%E5%92%8C%E6%95%B0%E5%AD%97%E7%B1%BB%E5%9E%8B%E7%B4%A2%E5%BC%95%E7%9A%84%E5%8C%BA%E5%88%AB%EF%BC%9F
14.union和union all的区别是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#union%E5%92%8Cunion
15.Join的工作流程是怎么样的，怎么进行优化？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#Join%E7%9A%84%E5%B7%A5%E4%BD%9C%E6%B5%81%E7%A8%8B%E6%98%AF%E6%80%8E%E4%B9%88%E6%A0%B7%E7%9A%84%EF%BC%8C%E6%80%8E%E4%B9%88%E8%BF%9B%E8%A1%8C%E4%BC%98%E5%8C%96
16.聚集索引是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#%E8%81%9A%E9%9B%86%E7%B4%A2%E5%BC%95%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
17.联合索引是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#%E8%81%94%E5%90%88%E7%B4%A2%E5%BC%95%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
18.覆盖索引是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#%E8%A6%86%E7%9B%96%E7%B4%A2%E5%BC%95%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
19.哪些情况不要建索引？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#%E5%93%AA%E4%BA%9B%E6%83%85%E5%86%B5%E4%B8%8D%E8%A6%81%E5%BB%BA%E7%B4%A2%E5%BC%95%EF%BC%9F
20.主键，唯一性索引，普通索引的区别是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#%E4%B8%BB%E9%94%AE%EF%BC%8C%E5%94%AF%E4%B8%80%E6%80%A7%E7%B4%A2%E5%BC%95%EF%BC%8C%E6%99%AE%E9%80%9A%E7%B4%A2%E5%BC%95%E7%9A%84%E5%8C%BA%E5%88%AB%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
21.InnoDB和MyISAM的区别是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#InnoDB%E5%92%8CMyISAM%E7%9A%84%E5%8C%BA%E5%88%AB%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
22.什么是分库分表？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#%E4%BB%80%E4%B9%88%E6%98%AF%E5%88%86%E5%BA%93%E5%88%86%E8%A1%A8%EF%BC%9F
23.怎么实现跨库分页查询？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#%E6%80%8E%E4%B9%88%E5%AE%9E%E7%8E%B0%E8%B7%A8%E5%BA%93%E5%88%86%E9%A1%B5%E6%9F%A5%E8%AF%A2%EF%BC%9F
24.MySQL主从复制的工作流程是什么样的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#MySQL%E4%B8%BB%E4%BB%8E%E5%A4%8D%E5%88%B6%E7%9A%84%E5%B7%A5%E4%BD%9C%E6%B5%81%E7%A8%8B%E6%98%AF%E4%BB%80%E4%B9%88%E6%A0%B7%E7%9A%84%EF%BC%9F
25.char类型与varchar类型的区别？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#char%E7%B1%BB%E5%9E%8B%E4%B8%8Evarchar%E7%B1%BB%E5%9E%8B%E7%9A%84%E5%8C%BA%E5%88%AB%EF%BC%9F
26.查询数量SELECT Count(*)怎么优化？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#%E6%80%8E%E4%B9%88%E4%BC%98%E5%8C%96%E6%95%B0%E9%87%8F%E6%9F%A5%E8%AF%A2%EF%BC%9F
27.如何优化MySQL慢查询？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#%E5%A6%82%E4%BD%95%E4%BC%98%E5%8C%96MySQL%E6%85%A2%E6%9F%A5%E8%AF%A2%EF%BC%9F
28.MySQL的join的实现是怎么样的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLNote.md#MySQL%E7%9A%84join%E7%9A%84%E5%AE%9E%E7%8E%B0%E6%98%AF%E6%80%8E%E4%B9%88%E6%A0%B7%E7%9A%84%EF%BC%9F
慢查询优化实践	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLWork.md
基础	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaJVM.md
1.Java内存区域怎么划分的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaJVM.md#Java%E5%86%85%E5%AD%98%E5%8C%BA%E5%9F%9F%E6%80%8E%E4%B9%88%E5%88%92%E5%88%86%E7%9A%84%EF%BC%9F
2.Java中对象的创建过程是怎么样的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaJVM.md#Java%E4%B8%AD%E5%AF%B9%E8%B1%A1%E7%9A%84%E5%88%9B%E5%BB%BA%E8%BF%87%E7%A8%8B%E6%98%AF%E6%80%8E%E4%B9%88%E6%A0%B7%E7%9A%84%EF%BC%9F
3.Java对象的内存布局是怎么样的？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaJVM.md#Java%E5%AF%B9%E8%B1%A1%E7%9A%84%E5%86%85%E5%AD%98%E5%B8%83%E5%B1%80%E6%98%AF%E6%80%8E%E4%B9%88%E6%A0%B7%E7%9A%84%EF%BC%9F
4.垃圾回收有哪些特点？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaJVM.md#%E5%9E%83%E5%9C%BE%E5%9B%9E%E6%94%B6%E6%9C%89%E5%93%AA%E4%BA%9B%E7%89%B9%E7%82%B9%EF%BC%9F
5.在垃圾回收机制中，对象在内存中的状态有哪几种？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaJVM.md#%E5%9C%A8%E5%9E%83%E5%9C%BE%E5%9B%9E%E6%94%B6%E6%9C%BA%E5%88%B6%E4%B8%AD%EF%BC%8C%E5%AF%B9%E8%B1%A1%E5%9C%A8%E5%86%85%E5%AD%98%E4%B8%AD%E7%9A%84%E7%8A%B6%E6%80%81%E6%9C%89%E5%93%AA%E5%87%A0%E7%A7%8D%EF%BC%9F
6.对象的强引用，软引用，弱引用和虚引用的区别是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaJVM.md#%E5%AF%B9%E8%B1%A1%E7%9A%84%E5%BC%BA%E5%BC%95%E7%94%A8%EF%BC%8C%E8%BD%AF%E5%BC%95%E7%94%A8%EF%BC%8C%E5%BC%B1%E5%BC%95%E7%94%A8%E5%92%8C%E8%99%9A%E5%BC%95%E7%94%A8%E7%9A%84%E5%8C%BA%E5%88%AB%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
7.双亲委派机制是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaJVM.md#%E5%8F%8C%E4%BA%B2%E5%A7%94%E6%B4%BE%E6%9C%BA%E5%88%B6%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
8.怎么自定义一个类加载器？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaJVM.md#%E6%80%8E%E4%B9%88%E8%87%AA%E5%AE%9A%E4%B9%89%E4%B8%80%E4%B8%AA%E7%B1%BB%E5%8A%A0%E8%BD%BD%E5%99%A8%EF%BC%9F
9.垃圾回收算法有哪些？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaJVM.md#%E5%9E%83%E5%9C%BE%E5%9B%9E%E6%94%B6%E7%AE%97%E6%B3%95%E6%9C%89%E5%93%AA%E4%BA%9B%EF%BC%9F
10.Minor GC和Full GC是什么？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaJVM.md#MinorGC%E5%92%8CFullGC%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F
11.如何确定一个对象可以回收？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaJVM.md#%E5%A6%82%E4%BD%95%E7%A1%AE%E5%AE%9A%E4%B8%80%E4%B8%AA%E5%AF%B9%E8%B1%A1%E6%98%AF%E5%90%A6%E5%8F%AF%E4%BB%A5%E8%A2%AB%E5%9B%9E%E6%94%B6%EF%BC%9F
12.目前通常使用的是什么垃圾收集器？	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JavaJVM.md#%E7%9B%AE%E5%89%8D%E9%80%9A%E5%B8%B8%E4%BD%BF%E7%94%A8%E7%9A%84%E6%98%AF%E4%BB%80%E4%B9%88%E5%9E%83%E5%9C%BE%E6%94%B6%E9%9B%86%E5%99%A8%EF%BC%9F
Kafka	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/Kafka.md
ZooKeeper	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/ZooKeeper.md
HTTP	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/HTTP.md
Spring	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/Spring.md
Nginx	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/Nginx.md
系统设计	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/SystemDesign.md
《剑指Offer》解题思考	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/CodingInterviews.md
《LeetCode热门100题》解题思考(上)	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/LeetCode.md
《LeetCode热门100题》解题思考(下)	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/LeetCode1.md
大厂面试公众号文章系列	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/BATInterview.md
【大厂面试01期】高并发场景下，如何保证缓存与数据库一致性？	https://mp.weixin.qq.com/s/hwMpAVZ1_p8gLfPAzA8X9w
【大厂面试02期】Redis过期key是怎么样清理的？	https://mp.weixin.qq.com/s/J_nOPKS17Uax2zGrZsE8ZA
【大厂面试03期】MySQL是怎么解决幻读问题的？	https://mp.weixin.qq.com/s/8D6EmZM3m6RiSk0-N5YCww
【大厂面试04期】讲讲一条MySQL更新语句是怎么执行的？	https://mp.weixin.qq.com/s/pNe1vdTT24oEoJS_zs-5jQ
【大厂面试05期】说一说你对MySQL中锁的理解？	https://mp.weixin.qq.com/s/pTpPE33X-iYULYt8DOPp2w
【大厂面试06期】谈一谈你对Redis持久化的理解？	https://mp.weixin.qq.com/s/nff4fd5TnM-CMWb1hQIT9Q
【大厂面试07期】说一说你对synchronized锁的理解？	https://mp.weixin.qq.com/s/H8Cd2fj82qbdLZKBlo-6Dg
【大厂面试08期】谈一谈你对HashMap的理解？	https://mp.weixin.qq.com/s/b4f5NIPl9uVLkRg_UpWSJQ
《Redis设计与实现》读书笔记上	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisBook1.md
《Redis设计与实现》读书笔记下	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/RedisBook2.md
《MySQL必知必会》读书笔记	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/MySQLBook1.md
《深入理解Java虚拟机-第三版》读书笔记	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/JVMBook.md
好书推荐	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/blob/master/docs/bookRecommend.md
	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide#如何为这个开源项目做贡献
	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide#关于我
掘金主页	https://juejin.im/user/5b370a42e51d4558ce5eb969
主页中我的微信二维码	http://notfound9.github.io/interviewGuide/#/
	https://camo.githubusercontent.com/de0cfb0959f4b5f365ba710778db522b823ad5672e0bc7237a982367b2a13bb1/687474703a2f2f6e6f74666f756e64392e6769746875622e696f2f696e7465727669657747756964652f7374617469632f696d616765312e6a7067
	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide#关于转载
juejin.cn/user/430664288569453	https://juejin.cn/user/430664288569453
mysql	https://patch-diff.githubusercontent.com/topics/mysql
java	https://patch-diff.githubusercontent.com/topics/java
redis	https://patch-diff.githubusercontent.com/topics/redis
spring	https://patch-diff.githubusercontent.com/topics/spring
backend	https://patch-diff.githubusercontent.com/topics/backend
algorithms	https://patch-diff.githubusercontent.com/topics/algorithms
leetcode	https://patch-diff.githubusercontent.com/topics/leetcode
jvm	https://patch-diff.githubusercontent.com/topics/jvm
guide	https://patch-diff.githubusercontent.com/topics/guide
interview	https://patch-diff.githubusercontent.com/topics/interview
data-structures	https://patch-diff.githubusercontent.com/topics/data-structures
interviews	https://patch-diff.githubusercontent.com/topics/interviews
star	https://patch-diff.githubusercontent.com/topics/star
interview-practice	https://patch-diff.githubusercontent.com/topics/interview-practice
interview-questions	https://patch-diff.githubusercontent.com/topics/interview-questions
leetcode-java	https://patch-diff.githubusercontent.com/topics/leetcode-java
interview-preparation	https://patch-diff.githubusercontent.com/topics/interview-preparation
java-interview	https://patch-diff.githubusercontent.com/topics/java-interview
system-design	https://patch-diff.githubusercontent.com/topics/system-design
code-interview	https://patch-diff.githubusercontent.com/topics/code-interview
Readme	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide#readme-ov-file
Please reload this page	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide
Activity	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/activity
4k stars	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/stargazers
83 watching	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/watchers
687 forks	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/forks
Report repository	https://patch-diff.githubusercontent.com/contact/report-content?content_url=https%3A%2F%2Fgithub.com%2FNotFound9%2FinterviewGuide&report=NotFound9+%28user%29
Releases	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/releases
Packages 0	https://patch-diff.githubusercontent.com/users/NotFound9/packages?repo_name=interviewGuide
Contributors 3	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/graphs/contributors
Please reload this page	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide
Java 100.0%	https://patch-diff.githubusercontent.com/NotFound9/interviewGuide/search?l=java
	https://github.com
Terms	https://docs.github.com/site-policy/github-terms/github-terms-of-service
Privacy	https://docs.github.com/site-policy/privacy-policies/github-privacy-statement
Security	https://github.com/security
Status	https://www.githubstatus.com/
Community	https://github.community/
Docs	https://docs.github.com/
Contact	https://support.github.com?tags=dotcom-footer

Viewport: width=device-width

URLs of crawlers that visited me.