René's URL Explorer Experiment

Title: bestJavaer/java-concurrent/java-lock.md at master · breaklancer/bestJavaer · GitHub

Open Graph Title: bestJavaer/java-concurrent/java-lock.md at master · breaklancer/bestJavaer

X Title: bestJavaer/java-concurrent/java-lock.md at master · breaklancer/bestJavaer

Description: 这是一个成为更好的Java程序员的系列教程. Contribute to breaklancer/bestJavaer development by creating an account on GitHub.

Open Graph Description: 这是一个成为更好的Java程序员的系列教程. Contribute to breaklancer/bestJavaer development by creating an account on GitHub.

X Description: 这是一个成为更好的Java程序员的系列教程. Contribute to breaklancer/bestJavaer development by creating an account on GitHub.

Opengraph URL: https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md

X: @github

direct link

Domain: github.com

route-pattern	/:user_id/:repository/blob/name(/path)
route-controller	blob
route-action	show
fetch-nonce	v2:fc05642e-f418-4242-f12d-8453b8eaa6cc
current-catalog-service-hash	f3abb0cc802f3d7b95fc8762b94bdcb13bf39634c40c357301c4aa1d67a256fb
request-id	8C9E:1212A0:83F9FD:BB5732:6A6212CF
html-safe-nonce	9eb028c89911c3c90cdc77f0247d5ca80c3db6a9a071533d0d4c2c1a52314f55
visitor-payload	eyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiI4QzlFOjEyMTJBMDo4M0Y5RkQ6QkI1NzMyOjZBNjIxMkNGIiwidmlzaXRvcl9pZCI6IjM4OTI0NzI1NjgwMTMyNjM1NjciLCJyZWdpb25fZWRnZSI6ImlhZCIsInJlZ2lvbl9yZW5kZXIiOiJpYWQifQ==
visitor-hmac	f4c8d25ff2c3200fede57a33caff60b0e80ef4a657c7bcb3fb87aa4adac26194
hovercard-subject-tag	repository:271679411
github-keyboard-shortcuts	repository,source-code,file-tree,copilot
google-site-verification	Apib7-x98H0j5cPqHWwSMm6dNU4GmODRoqxLiDzdx9I
octolytics-url	https://collector.github.com/github/collect
analytics-location	///blob/show
fb:app_id	1401488693436528
apple-itunes-app	app-id=1477376905, app-argument=https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md
twitter:image	https://opengraph.githubassets.com/979f92140742cfdd5d64265c7be255fca4e6421d50147c69e1b9a441fe5fe6a9/breaklancer/bestJavaer
twitter:card	summary_large_image
og:image	https://opengraph.githubassets.com/979f92140742cfdd5d64265c7be255fca4e6421d50147c69e1b9a441fe5fe6a9/breaklancer/bestJavaer
og:image:alt	这是一个成为更好的Java程序员的系列教程. Contribute to breaklancer/bestJavaer development by creating an account on GitHub.
og:image:width	1200
og:image:height	600
og:site_name	GitHub
og:type	object
hostname	github.com
expected-hostname	github.com
None	ccf61cb7ab435725b916ed640f57c45b2c4721db9469bc32656080efc5214b3e
turbo-cache-control	no-cache
go-import	github.com/breaklancer/bestJavaer git https://github.com/breaklancer/bestJavaer.git
octolytics-dimension-user_id	48230553
octolytics-dimension-user_login	breaklancer
octolytics-dimension-repository_id	271679411
octolytics-dimension-repository_nwo	breaklancer/bestJavaer
octolytics-dimension-repository_public	true
octolytics-dimension-repository_is_fork	true
octolytics-dimension-repository_parent_id	269198820
octolytics-dimension-repository_parent_nwo	crisxuan/bestJavaer
octolytics-dimension-repository_network_root_id	269198820
octolytics-dimension-repository_network_root_nwo	crisxuan/bestJavaer
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	a7585b3d2ee639495a70ce464d0a18bad88ea12c
ui-target	full
theme-color	#1e2327
color-scheme	light dark

Links:

Skip to content	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#start-of-content
	https://github.com/
Sign in	https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fbreaklancer%2FbestJavaer%2Fblob%2Fmaster%2Fjava-concurrent%2Fjava-lock.md
GitHub CopilotWrite better code with AI	https://github.com/features/copilot
GitHub Copilot appDirect agents from issue to merge	https://github.com/features/ai/github-app
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
Code QualityEnforce quality at merge	https://github.com/features/code-quality
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
View all resources	https://github.com/resources
GitHub SponsorsFund open source developers	https://github.com/open-source/sponsors
Security Lab	https://securitylab.github.com
Maintainer Community	https://maintainers.github.com
Accelerator	https://github.com/open-source/accelerator
GitHub Stars	https://stars.github.com
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/enterprise/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://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fbreaklancer%2FbestJavaer%2Fblob%2Fmaster%2Fjava-concurrent%2Fjava-lock.md
Sign up	https://github.com/signup?ref_cta=Sign+up&ref_loc=header+logged+out&ref_page=%2F%3Cuser-name%3E%2F%3Crepo-name%3E%2Fblob%2Fshow&source=header-repo&source_repo=breaklancer%2FbestJavaer
Reload	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md
Reload	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md
Reload	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md
breaklancer	https://github.com/breaklancer
bestJavaer	https://github.com/breaklancer/bestJavaer
crisxuan/bestJavaer	https://github.com/crisxuan/bestJavaer
Notifications	https://github.com/login?return_to=%2Fbreaklancer%2FbestJavaer
Fork 0	https://github.com/login?return_to=%2Fbreaklancer%2FbestJavaer
Star 0	https://github.com/login?return_to=%2Fbreaklancer%2FbestJavaer
Code	https://github.com/breaklancer/bestJavaer
Pull requests 0	https://github.com/breaklancer/bestJavaer/pulls
Actions	https://github.com/breaklancer/bestJavaer/actions
Projects	https://github.com/breaklancer/bestJavaer/projects
Security and quality 0	https://github.com/breaklancer/bestJavaer/security
Insights	https://github.com/breaklancer/bestJavaer/pulse
Code	https://github.com/breaklancer/bestJavaer
Pull requests	https://github.com/breaklancer/bestJavaer/pulls
Actions	https://github.com/breaklancer/bestJavaer/actions
Projects	https://github.com/breaklancer/bestJavaer/projects
Security and quality	https://github.com/breaklancer/bestJavaer/security
Insights	https://github.com/breaklancer/bestJavaer/pulse
	https://github.com/breaklancer/bestJavaer
bestJavaer	https://github.com/breaklancer/bestJavaer/tree/master
java-concurrent	https://github.com/breaklancer/bestJavaer/tree/master/java-concurrent
History	https://github.com/breaklancer/bestJavaer/commits/master/java-concurrent/java-lock.md
	https://github.com/breaklancer/bestJavaer/commits/master/java-concurrent/java-lock.md
bestJavaer	https://github.com/breaklancer/bestJavaer/tree/master
java-concurrent	https://github.com/breaklancer/bestJavaer/tree/master/java-concurrent
Raw	https://github.com/breaklancer/bestJavaer/raw/refs/heads/master/java-concurrent/java-lock.md
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#java-锁事
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#java-锁分类
	https://camo.githubusercontent.com/3ffd4c76928cb905a9a10e1ee2d1ed321017f13fb27a3ff3cab9d898e35eeac7/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039333632343638382d313032343033353232362e706e67
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#线程是否需要对资源加锁
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#悲观锁
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#乐观锁
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#两种锁的使用场景
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#乐观锁的实现方式
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#版本号机制
	https://camo.githubusercontent.com/69d37177873d60d9cfec1251e28109d7d6d736fcc4936cdd5c8bffdb3703b672/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039333634323031372d3831393839313537392e706e67
	https://camo.githubusercontent.com/2d5ca1e57d49dd53830580db70963ee6015f3ab49addc8d8ce5bf66e3b0ab008/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039333635323135382d313230333535373039332e706e67
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#cas-算法
看完你就应该能明白的悲观锁和乐观锁	https://mp.weixin.qq.com/s?__biz=MzU2NDg0OTgyMA==&mid=2247484531&idx=1&sn=aca8142c1ca387ad276f0d2956a7e2c1&chksm=fc45f980cb32709667c1440b55ee6134437f6344dfd56ad1808ab36cd089b2da62b9c97cf9eb&token=24371561&lang=zh_CN#rd
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#乐观锁的缺点
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#aba-问题
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#循环开销大
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#cas与synchronized的使用情景
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#资源已被锁定线程是否阻塞
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#自旋锁的提出背景
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#什么是自旋锁
	https://camo.githubusercontent.com/3e330bc394b28b9a6743a2e2a01b1f2545ed279afc3f6e9ddbcff7f6921635cb/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039333731373133302d313639313339323432382e706e67
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#自旋锁的原理
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#自旋锁的优缺点
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#自旋锁的实现
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#ticketlock
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#clhlock
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#mcslock
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#clhlock-和-mcslock
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#多个线程并发访问资源
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#锁状态的分类
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#java-对象头
	https://camo.githubusercontent.com/cd85ca2f213e83b7d96d6933ed81cd9c881043933ce00ba62c1c0248e46130bd/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039353632353935322d313034313038393531382e706e67
	https://camo.githubusercontent.com/90fe5be1f2757248f513f47d2fb1e7aba3feb81dfb3540942fc61f20e0b86580/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039333734353530362d313137383232353430342e706e67
	https://camo.githubusercontent.com/4ecc5cbbcce2a96d59af21b6424bdd68161832c5f5cbb5e663480c6670f9a3f6/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343035343433392d3534373736393238332e706e67
markOop.hpp	https://github.com/openjdk-mirror/jdk7u-hotspot/blob/50bdefc3afe944ca74c3093e7448d6b889cd20d1/src/share/vm/oops/markOop.hpp
	https://camo.githubusercontent.com/0227b3ff798d77ba0bec417d5bf7ceb616e3debed8dfea7a20753ae064d3a2db/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343130333638312d313433383031343133302e706e67
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#synchronized锁
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#monitor
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#锁的分类及其解释
	https://camo.githubusercontent.com/7bb46aca9e6e574fa3fa117ea34a0e353adec8bbf8d39cb80bb22f578d6d9799/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343131343938362d3139393536313630352e706e67
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#无锁
	https://camo.githubusercontent.com/e548534e19a6a6993dd1d6b950b0d49bff70e21672aa50bf30b905ca55d5ca2d/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343132393230372d313036313530343537342e706e67
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#偏向锁
	https://camo.githubusercontent.com/c3b4f2d3f597073c8bdbaff3fb3fd7a2a04d88644cdeb0255fd4a549ee757579/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343133393131392d313336373037353835332e706e67
	https://camo.githubusercontent.com/2fa0f6a12dc9db5b2d95d84d2c1aa3f24e921bddb8f7d4bfb361f1a25796edc6/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343134393534342d313335333634313030352e706e67
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#轻量级锁
	https://camo.githubusercontent.com/d1e9587150b4a9f58f5ee4fb401c4946cf7ca8840d9616e5c47ca8408ff70fb0/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343230313739322d3232343838393039372e706e67
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#重量级锁
	https://camo.githubusercontent.com/5cac9f6f5dc805fa388c22e9cef2f8fa30c2bcf324e343bd9ae9ea6baedd4a55/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343231333535322d313839323232373039352e706e67
	https://camo.githubusercontent.com/de7cb4fd43fd7884e4b44ff4695b0822a951c936123fe96bcd7c425336e5a81c/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343232323630362d313936353732383438382e706e67
	https://camo.githubusercontent.com/2319f46c084a43fe7ec9c343a38d0e0b79f69c0dd6eebdf24f6fcb888e321b00/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343233313038382d3737333230333331332e706e67
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#锁的公平性与非公平性
	https://camo.githubusercontent.com/86df5a8e5827ffa73301c81288e3ffcc14a4c2f6f99ca0b66053bc691d35ff8d/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343234333139322d313835373637383739332e706e67
	https://camo.githubusercontent.com/95b270804c9082ad04aac2e3ad8e471366566e3e28da4c0dde476fb8a6e6d1c6/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343235323635302d3736363635363730302e706e67
	https://camo.githubusercontent.com/02a56a4723fbfff179020c2a352eb369a3693f26026e198afa4740f8c115f3a9/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343330303938372d3930343731353034382e706e67
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#锁公平性的实现
	https://camo.githubusercontent.com/a5ef697458b0f3bcfb6d5f25b334ba410fdcb4de3dc6be079b83c653398bfda9/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343333313434372d313831383839353131322e706e67
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#reentrantlock-基本概述
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#reentrantlock-如何实现锁公平性
	https://camo.githubusercontent.com/8e287e5ad216abaece331f80a0e7b6afec37490f3f956e5576ca99316a6a9188/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343633323932322d3433363538313133342e706e67
	https://camo.githubusercontent.com/9309510b834539f063f9aec1512a3ed85a1d10c5b72ef921386e013248c81f95/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343634373034382d313932323636323736332e706e67
	https://camo.githubusercontent.com/1501ad1056de1ca9a3e35ccccc3eeba0c50a0acc04a36d25d37b4af518dcca38/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343932333538302d313538343031313333392e706e67
	https://camo.githubusercontent.com/bdc9e74d45c19e73186e21b1731a681708fe607f3be27bd49785d14e15b74f4e/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343933313837312d3130393132343137342e706e67
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#根据锁是否可重入进行区分
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#可重入锁
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#不可重入锁
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#多个线程能够共享同一把锁
	https://github.com/breaklancer/bestJavaer/blob/master/java-concurrent/java-lock.md#独占锁和共享锁
	https://camo.githubusercontent.com/59fcfb267a88239accb9a060a908f16a87ee8914b5335f453a79af6ad28bd8b0/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373039343934363933312d3236333336313231392e706e67
	https://camo.githubusercontent.com/accf59ff96fcd879c64456f0f0f330df945b5ef684969d00e7baeb80ca12c35f/68747470733a2f2f696d67323031382e636e626c6f67732e636f6d2f626c6f672f313531353131312f3230313931322f313531353131312d32303139313231373130303031383830392d313939393136333534322e706e67
Java 多线程之悲观锁与乐观锁	https://www.cnblogs.com/renhui/p/9755789.html
https://baike.baidu.com/item/悲观锁	https://baike.baidu.com/item/%E6%82%B2%E8%A7%82%E9%94%81
https://blog.csdn.net/qq_34337272/article/details/81252853	https://blog.csdn.net/qq_34337272/article/details/81252853
http://www.blogjava.net/jinfeng_wang/archive/2016/12/14/432088.html	http://www.blogjava.net/jinfeng_wang/archive/2016/12/14/432088.html
https://blog.hufeifei.cn/	https://blog.hufeifei.cn/
https://en.wikipedia.org/wiki/Ticket_lock	https://en.wikipedia.org/wiki/Ticket_lock
https://blog.stephencleary.com/2013/04/recursive-re-entrant-locks.html	https://blog.stephencleary.com/2013/04/recursive-re-entrant-locks.html
https://researcher.watson.ibm.com/researcher/files/us-bacon/Bacon03Retrospective.pdf	https://researcher.watson.ibm.com/researcher/files/us-bacon/Bacon03Retrospective.pdf
https://tech.meituan.com/2018/11/15/java-lock.html	https://tech.meituan.com/2018/11/15/java-lock.html
https://www.jianshu.com/p/eaea337c5e5b	https://www.jianshu.com/p/eaea337c5e5b
https://blog.csdn.net/oChangWen/article/details/77622889	https://blog.csdn.net/oChangWen/article/details/77622889
	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.