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d5d61b3
[feat]MySQL三大日志(binlog、redo log和undo log)
Snailclimb Aug 15, 2021
b46a3c3
[feat]java9 新特性完善
Snailclimb Aug 16, 2021
814780f
[feat]java10,11 新特性完善
Snailclimb Aug 16, 2021
ef5e010
Merge pull request #1320 from kaka2634/master
Snailclimb Aug 16, 2021
e4bb8f8
[fix]字符串拼接图片修正
Snailclimb Aug 17, 2021
c1b2be0
Update 一文带你看遍JDK9到14的重要新特性.md
Snailclimb Aug 17, 2021
e7e8d48
[feat] Java13新特性重构
Snailclimb Aug 18, 2021
801c220
[feat] Java14新特性重构
Snailclimb Aug 18, 2021
7f853ef
Update zookeeper-plus.md
ObSob Aug 19, 2021
22a16d6
Merge pull request #1326 from ObSob/patch-1
Snailclimb Aug 19, 2021
1bfc5c1
[feat]Java 15 新特性总结
Snailclimb Aug 20, 2021
d535742
Update README.md
Snailclimb Aug 21, 2021
7a16bb8
Update 代理模式详解.md
Aaron-Ge Aug 22, 2021
2cc2d9a
[refractor&feat]数据结构完善&文件夹重构
Snailclimb Aug 23, 2021
fa7ca13
Update java新特性总结.md
Aug 23, 2021
e8cbc06
Update java新特性总结.md
Aug 23, 2021
40a7fcb
Update java新特性总结.md
Aug 23, 2021
46ad9b4
Update linux.md
lllidany Aug 23, 2021
df923e6
Merge pull request #1331 from Aaron-Ge/master
Snailclimb Aug 23, 2021
c8f7777
Merge pull request #1335 from lllidany/master
Snailclimb Aug 23, 2021
a5ce875
Merge pull request #1332 from anaer/patch-1
Snailclimb Aug 23, 2021
d7356a0
Update Java基础知识.md
Aug 24, 2021
c58b5a2
Update Shell.md
Aug 24, 2021
39836b0
Update Shell.md
Aug 24, 2021
d8cae22
Update naming.md
Aug 24, 2021
b55ee4a
Update Spring常见问题总结.md
Aug 24, 2021
e69859b
[feat]修复链接错误
Snailclimb Aug 24, 2021
64fb03b
Update java8-common-new-features.md
Aug 25, 2021
dfda4a4
Update IO模型.md
Aaron-Ge Aug 25, 2021
413e15c
修改布隆过滤器一文链接地址
debugjoker Aug 26, 2021
b5db9e9
跳转链接格式处理
debugjoker Aug 26, 2021
b552b3f
校正
chengcjk Aug 26, 2021
f25a32d
[refractor]移除集合部分内容,单独整理
Snailclimb Aug 26, 2021
a057eda
[feat]Java集合使用注意事项总结
Snailclimb Aug 26, 2021
08e27ac
Merge pull request #1342 from anaer/patch-10
Snailclimb Aug 26, 2021
c1288b8
Merge pull request #1348 from chengcjk/master
Snailclimb Aug 26, 2021
2e1a32b
Merge pull request #1347 from debugjoker/patch-2
Snailclimb Aug 26, 2021
197212b
Merge pull request #1346 from debugjoker/patch-1
Snailclimb Aug 26, 2021
7c23c88
Merge pull request #1345 from Aaron-Ge/master
Snailclimb Aug 26, 2021
8e83b3a
Merge pull request #1339 from anaer/patch-9
Snailclimb Aug 26, 2021
5e2ed4c
Merge pull request #1338 from anaer/patch-8
Snailclimb Aug 26, 2021
6516038
Merge pull request #1337 from anaer/patch-7
Snailclimb Aug 26, 2021
5b3fec4
Merge pull request #1336 from izhengchengjin/patch-1
Snailclimb Aug 26, 2021
c2f10ad
Delete ThreadLocal(未完成).md
Snailclimb Aug 26, 2021
5014c53
Update 如何设计一个亿级网关.md
Aug 27, 2021
c1a239a
补充丢失的文字
Aug 27, 2021
76ef548
错别字
chengcjk Aug 27, 2021
b982a6e
[feat] add 灾备设计&异地多活
Snailclimb Aug 27, 2021
4baeecd
Update [加餐]大白话带你认识JVM.md
liukun2634 Aug 27, 2021
1741a67
Update [加餐]大白话带你认识JVM.md
liukun2634 Aug 27, 2021
06baca5
Merge pull request #1350 from anaer/patch-11
Snailclimb Aug 28, 2021
47aad33
Merge pull request #1352 from chengcjk/master
Snailclimb Aug 28, 2021
3055a04
Merge pull request #1351 from rocky-peng/patch-3
Snailclimb Aug 28, 2021
b4a9f12
Merge pull request #1353 from kaka2634/master
Snailclimb Aug 28, 2021
20cb19b
Update naming.md
Aug 30, 2021
bd6443f
Update JAD反编译tricks.md
Aug 30, 2021
d8be08b
Update JWT优缺点分析以及常见问题解决方案.md
Aug 30, 2021
2e7f5c4
Merge pull request #1354 from anaer/patch-12
Snailclimb Aug 30, 2021
050d306
Merge pull request #1355 from anaer/patch-13
Snailclimb Aug 30, 2021
4656fd9
Merge pull request #1356 from anaer/patch-14
Snailclimb Aug 30, 2021
4189bbe
Update Java集合框架常见面试题.md
Snailclimb Aug 31, 2021
24f27e5
Update RabbitMQ入门看这一篇就够了.md
Aug 31, 2021
bdcd1af
Update IO模型.md
Sep 1, 2021
e534636
Update 代理模式详解.md
Sep 1, 2021
0222e9c
Update BIO,NIO,AIO总结.md
Sep 1, 2021
ffe1c91
Update BIO,NIO,AIO总结.md
Sep 1, 2021
ce6daf1
Create CompletableFuture从入门到实战.md
Snailclimb Sep 1, 2021
4cf77fb
Update 数据库基础知识.md
fengx20 Sep 1, 2021
f0683e5
[feat]CompletableFuture入门
Snailclimb Sep 2, 2021
576e5df
[feat]CompletableFuture入门
Snailclimb Sep 2, 2021
81422c6
Merge pull request #1357 from anaer/patch-16
Snailclimb Sep 2, 2021
f7cc597
Merge pull request #1358 from anaer/patch-17
Snailclimb Sep 2, 2021
a6a0782
Merge pull request #1359 from anaer/patch-18
Snailclimb Sep 2, 2021
d89366f
Merge pull request #1360 from anaer/patch-19
Snailclimb Sep 2, 2021
ec42874
Update RESTfulAPI简明教程.md
Sep 3, 2021
03ba6d7
Merge pull request #1363 from anaer/patch-20
Snailclimb Sep 5, 2021
619be0f
Merge pull request #1361 from fengx20/patch-1
Snailclimb Sep 5, 2021
de32126
Update 万字详解ThreadLocal关键字.md
Sep 6, 2021
7bddf34
Update JDK监控和故障处理工具总结.md
Sep 6, 2021
cc5f281
Update java新特性总结.md
Snailclimb Sep 6, 2021
c656dd8
Update Java基础知识疑难点.md
weixsun Sep 6, 2021
b5b446f
Update 数据库基础知识.md
linzlb Sep 7, 2021
2f974f4
Update Java基础知识.md
Sep 7, 2021
4066882
Update 用好Java中的枚举真的没有那么简单.md
Sep 7, 2021
2e6bf93
Update Spring事务总结.md
weixsun Sep 7, 2021
00422da
Update Spring事务总结.md
weixsun Sep 7, 2021
9b358a9
Update Spring事务总结.md
weixsun Sep 7, 2021
e3da427
Update CAP理论.md
Sep 7, 2021
6842592
Merge pull request #1364 from anaer/patch-21
Snailclimb Sep 7, 2021
376b389
Merge pull request #1365 from anaer/patch-22
Snailclimb Sep 7, 2021
abcd7bf
Merge pull request #1367 from weixsun/Update-Java-基础知识疑难点
Snailclimb Sep 7, 2021
eaf0fb4
Merge pull request #1368 from linzlb/patch-1
Snailclimb Sep 7, 2021
a6abed3
Merge pull request #1369 from anaer/patch-23
Snailclimb Sep 7, 2021
614a292
Merge pull request #1370 from anaer/patch-24
Snailclimb Sep 7, 2021
232ae9b
Merge pull request #1371 from weixsun/Update-Spring事务总结
Snailclimb Sep 7, 2021
545ddee
Merge pull request #1372 from anaer/patch-25
Snailclimb Sep 7, 2021
ada7691
Update README.md
weixsun Sep 7, 2021
7405817
Merge pull request #1373 from weixsun/Update-README
Snailclimb Sep 8, 2021
9f88ccb
Update Git.md
Sep 8, 2021
767f601
Update SpringBoot+Spring常用注解总结.md
Sep 8, 2021
4b87e9b
Merge pull request #1374 from anaer/patch-28
Snailclimb Sep 8, 2021
ac930c3
Merge pull request #1375 from anaer/patch-29
Snailclimb Sep 8, 2021
b9d3148
Update Java8新特性总结.md
Sep 9, 2021
0e2aeec
Update InnoDB对MVCC的实现.md
mo-nian Sep 9, 2021
a975e7d
Merge pull request #1 from mo-nian/mo-nian-patch-1
mo-nian Sep 9, 2021
9fa49af
Update SSO单点登录看这一篇就够了.md
Sep 9, 2021
54df60e
Update bloom-filter.md
Sep 9, 2021
6cdbe28
Update MySQL三大日志.md
ShiqiRao Sep 9, 2021
c9ea539
Update Docker.md
Sep 10, 2021
f077543
Update Docker从入门到实战.md
Sep 10, 2021
a999466
Merge pull request #1376 from anaer/patch-30
Snailclimb Sep 10, 2021
3988950
Merge pull request #1378 from mo-nian/master
Snailclimb Sep 10, 2021
ed6ed0f
Merge pull request #1379 from anaer/patch-31
Snailclimb Sep 10, 2021
8570b57
Merge pull request #1380 from anaer/patch-33
Snailclimb Sep 10, 2021
959753c
Merge pull request #1383 from nockyQ/patch-2
Snailclimb Sep 10, 2021
fb6a0d2
Merge pull request #1384 from anaer/patch-34
Snailclimb Sep 10, 2021
c5e03c7
Merge pull request #1385 from anaer/patch-35
Snailclimb Sep 10, 2021
ff5f4b0
Update Spring常见问题总结.md
huh0ngtao Sep 11, 2021
ffbcf71
Update java线程池学习总结.md
error0g Sep 11, 2021
219a006
Update Spring事务总结.md
error0g Sep 11, 2021
7fed7cc
typo
error0g Sep 11, 2021
44232fc
Update Spring常见问题总结.md
liukun2634 Sep 12, 2021
a7f8dfb
Merge pull request #1387 from hu-asc/master
Snailclimb Sep 13, 2021
a0e826b
Merge pull request #1388 from error0g/error0g-patch-1
Snailclimb Sep 13, 2021
6cc177a
Merge pull request #1390 from error0g/error0g-patch-3
Snailclimb Sep 13, 2021
ba32cba
Merge pull request #1392 from kaka2634/master
Snailclimb Sep 13, 2021
0ebf887
[fix]完全二叉树图片错误修复
Snailclimb Sep 13, 2021
1fdb7f1
[fix]线程池使用不当导致死锁图片修正
Snailclimb Sep 13, 2021
46146f8
[fix]数据可见性算法笔误&内容完善
Snailclimb Sep 13, 2021
c00721e
Update Java集合框架常见面试题.md
Aaron-Ge Sep 13, 2021
d740936
Merge branch 'Snailclimb:master' into master
Aaron-Ge Sep 13, 2021
87d31f1
Merge pull request #1393 from Aaron-Ge/master
Snailclimb Sep 13, 2021
b23da48
Update README.md
Snailclimb Sep 14, 2021
f949397
Update ConcurrentHashMap源码+底层数据结构分析.md
Snailclimb Sep 15, 2021
e4a4e1c
Update 最重要的JVM参数指南.md
Snailclimb Sep 15, 2021
4e2db76
Update Java基础知识.md
gongjixiaobai Sep 16, 2021
f6bbf59
Update 服务之间的调用为啥不直接用HTTP而用RPC.md
Sep 16, 2021
35a7876
Update 服务之间的调用为啥不直接用HTTP而用RPC.md
Sep 16, 2021
b412617
Update Dubbo.md
Sep 16, 2021
8ac6241
Update Kafka常见面试题总结.md
Sep 16, 2021
b0014ac
Update RocketMQ-Questions.md
Sep 16, 2021
90dd5e8
Update RocketMQ.md
Sep 16, 2021
d84f043
Update java新特性总结.md
Snailclimb Sep 16, 2021
225e998
Merge pull request #1398 from gongjixiaobai/patch-1
Snailclimb Sep 16, 2021
628f9e2
Merge pull request #1403 from anaer/patch-42
Snailclimb Sep 16, 2021
9cf981b
Merge pull request #1402 from anaer/patch-41
Snailclimb Sep 16, 2021
a98f58d
Merge pull request #1401 from anaer/patch-39
Snailclimb Sep 16, 2021
af57f15
Merge pull request #1400 from anaer/patch-38
Snailclimb Sep 16, 2021
79bcd3f
Merge pull request #1399 from anaer/patch-36
Snailclimb Sep 16, 2021
fecc256
Update and rename 为什么要网站有哪些常见的网站系统.md to 为什么要网关有哪些常见的网关系统.md
Sep 16, 2021
fba4e83
Merge pull request #1404 from anaer/patch-43
Snailclimb Sep 16, 2021
3edfca4
Update limit-request.md
Sep 17, 2021
f2ef8e4
Update 如何设计一个高可用系统要考虑哪些地方.md
Sep 17, 2021
44cb97c
Update 读写分离&分库分表.md
Sep 17, 2021
53542c4
Update redis-all.md
Qiwenlii Sep 22, 2021
e731a78
fix redis.md bug
Qiwenlii Sep 22, 2021
504e6fa
Merge pull request #1405 from anaer/patch-44
Snailclimb Sep 22, 2021
423a12e
Merge pull request #1406 from anaer/patch-45
Snailclimb Sep 22, 2021
111c224
Merge pull request #1407 from anaer/patch-46
Snailclimb Sep 22, 2021
7ec4dcd
Update Kafka常见面试题总结.md
Snailclimb Sep 22, 2021
1947e5a
[feat]分布式ID文章完善更新
Snailclimb Sep 23, 2021
1bbe22b
Update README.md
Snailclimb Sep 23, 2021
2c1d170
[feat]Java内存区域内容完善补充
Snailclimb Sep 23, 2021
437abe6
Update Java内存区域.md
Snailclimb Sep 23, 2021
dcea444
Update Java内存区域.md
Snailclimb Sep 23, 2021
2996747
[refractor]文件名修改
Snailclimb Sep 24, 2021
b4d29c2
Update java线程池学习总结.md
Snailclimb Sep 24, 2021
66d7c41
Merge pull request #1410 from Qiwenlii/master
Snailclimb Sep 25, 2021
078f4ae
[feat]定时任务
Snailclimb Sep 26, 2021
a2479a7
Update Java并发基础常见面试题总结.md
Snailclimb Sep 26, 2021
08cc656
Update Java并发进阶常见面试题总结.md
Aaron-Ge Sep 26, 2021
83f9e69
Update InnoDB对MVCC的实现.md
hligaty Sep 27, 2021
48e4c18
Update Java集合框架常见面试题.md
debugjoker Sep 27, 2021
302c115
Update Java并发进阶常见面试题总结.md
Aaron-Ge Sep 28, 2021
56d02d2
Update java线程池学习总结.md
Aaron-Ge Sep 28, 2021
3a90b25
Update 拿来即用的线程池最佳实践.md
Aaron-Ge Sep 28, 2021
9211b3e
[feat]首页添加《程序员副业赚钱之路》
Snailclimb Sep 28, 2021
0e7714a
Update README.md
Snailclimb Sep 28, 2021
d4e04d6
Merge pull request #1418 from hligaty/patch-1
Snailclimb Sep 28, 2021
f6e0428
Merge pull request #1420 from debugjoker/patch-3
Snailclimb Sep 28, 2021
eea8a1e
Merge pull request #1417 from Aaron-Ge/master
Snailclimb Sep 28, 2021
e33e785
Update README.md
Snailclimb Sep 28, 2021
e4caa8a
CMS垃圾收集器jvm参数大小写错误
1036956372 Sep 29, 2021
7af2d8a
Merge pull request #1422 from 1036956372/patch-1
Snailclimb Sep 30, 2021
6e77ea0
[feat]api网关重构
Snailclimb Oct 4, 2021
abd8907
Update 堆.md
Masker99 Oct 4, 2021
8023698
Merge pull request #1426 from Masker99/master
Snailclimb Oct 6, 2021
50e2ead
[feat]IntelliJ IDEA 使用指南 | 必备插件推荐 | 插件开发入门 | 重构小技巧 | 源码阅读技巧
Snailclimb Oct 10, 2021
3a6faf3
[feat]字符集详解:为什么不建议在MySQL中使用 utf8 ?
Snailclimb Oct 13, 2021
cbe983e
修改错误字
qiuqianorg Oct 14, 2021
a5b9860
Update README.md
Snailclimb Oct 15, 2021
e3d1c97
Update java线程池学习总结.md
Snailclimb Oct 15, 2021
f6ac89a
Update java线程池学习总结.md
Snailclimb Oct 15, 2021
69a0134
Merge pull request #1428 from SimonLi0427/master
Snailclimb Oct 15, 2021
bd3b9fe
[feat]灾备设计和异地多活文章推荐
Snailclimb Oct 17, 2021
f014952
feat:补充kafka不重复消费的解答
machitaoX Oct 17, 2021
3d92eca
Merge pull request #1431 from machitaoX/feature_completeKafka
Snailclimb Oct 18, 2021
83519ff
Update Kafka常见面试题总结.md
Snailclimb Oct 18, 2021
1ee0f5e
Update README.md
Snailclimb Oct 20, 2021
c1b14de
Update README.md
Snailclimb Oct 24, 2021
81ffbed
[fix]《手把手教你定位常见 Java 性能问题》图片修复
Snailclimb Oct 25, 2021
78857ee
Update README.md
Snailclimb Oct 28, 2021
973f1ee
redis AOF重写描述不准确
xjlgod Nov 1, 2021
8f138f2
Update README.md
Snailclimb Nov 3, 2021
416bb02
装箱和拆箱写反了
xjlgod Nov 4, 2021
f0a7154
Merge branch 'Snailclimb:master' into master
xjlgod Nov 4, 2021
b919dff
Merge pull request #1436 from xjlgod/master
Snailclimb Nov 6, 2021
3dd194a
[feat]内容重构,删除无用文章,优化文件名
Snailclimb Nov 6, 2021
3a5cd7b
Merge branch 'master' of github.com:Snailclimb/JavaGuide
Snailclimb Nov 6, 2021
0ff5f5a
Delete MySQL Index.md
Snailclimb Nov 6, 2021
63bf25b
[feat]Java基础内容重构,删除无用文章,优化文件名
Snailclimb Nov 6, 2021
bb784d4
[feat]Java并发内容重构,删除无用文章,优化文件名
Snailclimb Nov 6, 2021
de3a900
Delete synchronized在JDK1.6之后的底层优化.md
Snailclimb Nov 6, 2021
47b7c85
[feat]jvm内容重构,删除无用文章,优化文件名
Snailclimb Nov 7, 2021
a26ff09
Delete submission.html
Snailclimb Nov 7, 2021
23efacc
Update java集合框架基础知识&面试题总结.md
Snailclimb Nov 7, 2021
dc45389
[feat]🔥 基于 vuepress 重构整个项目,提升阅读体验
Snailclimb Nov 9, 2021
3916409
[feat]网站首页更新
Snailclimb Nov 9, 2021
25b0f2b
[feat]在线阅读网站样式完善
Snailclimb Nov 9, 2021
cbfb2c5
[feat]文章名规范&在线阅读完善样式美化
Snailclimb Nov 9, 2021
06f726f
Update readme.md
Snailclimb Nov 9, 2021
a66506d
fix typos
Casflawed Nov 9, 2021
9dd6f54
Merge branch 'Snailclimb:master' into flameking_work-A
Casflawed Nov 9, 2021
afc837a
Update .gitignore
Snailclimb Nov 9, 2021
537fdce
Create .gitattributes
Snailclimb Nov 9, 2021
6f5aeb1
Merge branch 'Snailclimb:master' into flameking_work-A
Casflawed Nov 9, 2021
bd2f4ef
fix typos
Casflawed Nov 9, 2021
91ccfe3
[文件名更正]
Snailclimb Nov 10, 2021
2a78961
Update readme.md
Snailclimb Nov 10, 2021
b87ef11
Merge branch 'Snailclimb:master' into flameking_work-A
Casflawed Nov 10, 2021
351ea31
[fix]图片错误修复
Snailclimb Nov 10, 2021
47a6b08
Update README.md
Snailclimb Nov 10, 2021
e9b4a0c
fix typos
Casflawed Nov 10, 2021
405dec3
[feat]百度统计
Snailclimb Nov 10, 2021
e7b509e
fix typos
Casflawed Nov 10, 2021
e0cd0a3
Merge branch 'Snailclimb:master' into flameking_work-A
Casflawed Nov 10, 2021
d0a5502
[fix]百度统计
Snailclimb Nov 10, 2021
580617f
Merge branch 'Snailclimb:master' into flameking_work-A
Casflawed Nov 10, 2021
78d1cb4
Merge pull request #1444 from acflameking/flameking_work-A
Snailclimb Nov 10, 2021
a2f9479
Update config.js
Snailclimb Nov 10, 2021
63e8ee6
Update 手把手教你定位常见Java性能问题.md
Snailclimb Nov 10, 2021
1543c0d
Update 操作系统常见面试题&知识点总结.md
Aaron-Ge Nov 10, 2021
c0cdd9f
Update 操作系统常见面试题&知识点总结.md
Aaron-Ge Nov 11, 2021
7e718d5
修改错误字
qiuqianorg Nov 13, 2021
e878f58
Merge pull request #1446 from Aaron-Ge/master
Snailclimb Nov 16, 2021
8965fcd
Merge pull request #1448 from qiuqianorg/master
Snailclimb Nov 16, 2021
b54c726
修改错别字
cliveyuan Mar 9, 2022
77260e6
Merge pull request #1605 from cliveyuan/patch-1
Snailclimb Mar 12, 2022
fb6e11b
修改错别字
Mar 20, 2022
98eafbd
Merge pull request #1631 from drlifeL/master
Snailclimb Mar 21, 2022
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[refractor&feat]数据结构完善&文件夹重构
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Snailclimb committed Aug 23, 2021
commit 2cc2d9a969505163c293efa52b48b3c045c15ce3
56 changes: 34 additions & 22 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,7 @@

### 基础

**知识点/面试题:**(必看:+1: )
**知识点/面试题** : (必看:+1: )

1. **[Java 基础知识](docs/java/basis/Java基础知识.md)**
2. **[Java 基础知识疑难点/易错点](docs/java/basis/Java基础知识疑难点.md)**
Expand All @@ -71,11 +71,11 @@

**重要知识点详解:**

2. **线程池**:[Java 线程池学习总结](./docs/java/multi-thread/java线程池学习总结.md)、[拿来即用的线程池最佳实践](./docs/java/multi-thread/拿来即用的线程池最佳实践.md)
4. [ ThreadLocal 关键字解析](docs/java/multi-thread/万字详解ThreadLocal关键字.md)
5. [并发容器总结](docs/java/multi-thread/并发容器总结.md)
6. [JUC 中的 Atomic 原子类总结](docs/java/multi-thread/Atomic原子类总结.md)
7. [AQS 原理以及 AQS 同步组件总结](docs/java/multi-thread/AQS原理以及AQS同步组件总结.md)
1. **线程池**:[Java 线程池学习总结](./docs/java/multi-thread/java线程池学习总结.md)、[拿来即用的线程池最佳实践](./docs/java/multi-thread/拿来即用的线程池最佳实践.md)
2. [ ThreadLocal 关键字解析](docs/java/multi-thread/万字详解ThreadLocal关键字.md)
3. [并发容器总结](docs/java/multi-thread/并发容器总结.md)
4. [JUC 中的 Atomic 原子类总结](docs/java/multi-thread/Atomic原子类总结.md)
5. [AQS 原理以及 AQS 同步组件总结](docs/java/multi-thread/AQS原理以及AQS同步组件总结.md)

### JVM (必看 :+1:)

Expand All @@ -95,28 +95,38 @@ JVM 这部分内容主要参考 [JVM 虚拟机规范-Java8 ](https://docs.oracle
1. **Java 8** :[Java 8 新特性总结](docs/java/new-features/Java8新特性总结.md)、[Java8常用新特性总结](docs/java/new-features/java8-common-new-features.md) 、[Java 8 学习资源推荐](docs/java/new-features/Java8教程推荐.md)、[Java8 forEach 指南](docs/java/new-features/Java8foreach指南.md)
2. **Java9~Java15** : [一文带你看遍 JDK9~15 的重要新特性!](./docs/java/new-features/java新特性总结.md)

### 小技巧

1. [JAD 反编译](docs/java/tips/JAD反编译tricks.md)
2. [手把手教你定位常见 Java 性能问题](./docs/java/tips/手把手教你定位常见Java性能问题.md)

## 计算机基础

👉 **[图解计算机基础 PDF 下载](https://mp.weixin.qq.com/s?__biz=Mzg2OTA0Njk0OA==&mid=100021725&idx=1&sn=2db9664ca25363139a81691043e9fd8f&chksm=4ea19a1679d61300d8990f7e43bfc7f476577a81b712cf0f9c6f6552a8b219bc081efddb5c54#rd)** 。

### 操作系统

1. [操作系统常见问题总结!](docs/operating-system/basis.md)
2. [后端程序员必备的 Linux 基础知识](docs/operating-system/linux.md)
3. [Shell 编程入门](docs/operating-system/Shell.md)
1. [操作系统常见问题总结!](docs/cs-basics/operating-system/basis.md)
2. [后端程序员必备的 Linux 基础知识总结](docs/cs-basics/operating-system/linux.md)
3. [Shell 编程入门](docs/cs-basics/operating-system/Shell.md)

### 网络

1. [计算机网络常见面试题](docs/network/计算机网络.md)
2. [计算机网络基础知识总结](docs/network/计算机网络知识总结.md)
1. [计算机网络常见面试题](docs/cs-basics/network/计算机网络.md)
2. [计算机网络基础知识总结](docs/cs-basics/network/计算机网络知识总结.md)

### 数据结构

- **图解数据结构:**
1. [线性数据结构 :数组、链表、栈、队列](docs/dataStructures-algorithms/data-structure/线性数据结构.md)
2. [图](docs/dataStructures-algorithms/data-structure/图.md)
3. [堆](docs/dataStructures-algorithms/data-structure/堆.md)
- [不了解布隆过滤器?一文给你整的明明白白!](docs/dataStructures-algorithms/data-structure/bloom-filter.md)
**图解数据结构:**

1. [线性数据结构 :数组、链表、栈、队列](docs/cs-basics/data-structure/线性数据结构.md)
2. [图](docs/cs-basics/data-structure/图.md)
3. [堆](docs/cs-basics/data-structure/堆.md)
4. [树](docs/cs-basics/data-structure/树.md) :重点关注[红黑树](docs/cs-basics/data-structure/红黑树.md)、B-,B+,B*树、LSM树

其他常用数据结构 :

1. [布隆过滤器](docs/cs-basics/data-structure/bloom-filter.md)

### 算法

Expand All @@ -125,11 +135,13 @@ JVM 这部分内容主要参考 [JVM 虚拟机规范-Java8 ](https://docs.oracle
- [算法学习书籍+资源推荐](https://www.zhihu.com/question/323359308/answer/1545320858) 。
- [如何刷Leetcode?](https://www.zhihu.com/question/31092580/answer/1534887374)

**常见算法问题总结:**
**常见算法问题总结** :

- [几道常见的字符串算法题总结 ](docs/cs-basics/algorithms/几道常见的字符串算法题.md)
- [几道常见的链表算法题总结 ](docs/cs-basics/algorithms/几道常见的链表算法题.md)
- [剑指 offer 部分编程题](docs/cs-basics/algorithms/剑指offer部分编程题.md)

- [几道常见的字符串算法题总结 ](docs/dataStructures-algorithms/几道常见的字符串算法题.md)
- [几道常见的链表算法题总结 ](docs/dataStructures-algorithms/几道常见的链表算法题.md)
- [剑指 offer 部分编程题](docs/dataStructures-algorithms/剑指offer部分编程题.md)
另外,[GeeksforGeeks]( https://www.geeksforgeeks.org/fundamentals-of-algorithms/) 这个网站总结了常见的算法 ,比较全面系统。

## 数据库

Expand Down Expand Up @@ -354,7 +366,6 @@ Dubbo 是一款国产的 RPC 框架,由阿里开源。相关阅读:

## 工具

1. **Java** :[JAD 反编译](docs/java/JAD反编译tricks.md)、[手把手教你定位常见 Java 性能问题](./docs/java/手把手教你定位常见Java性能问题.md)
2. **Git** :[Git 入门](docs/tools/Git.md)
3. **Github** : [Github小技巧](docs/tools/Github技巧.md)
4. **Docker** : [Docker 基本概念解读](docs/tools/Docker.md) 、[Docker从入门到上手干事](docs/tools/Docker从入门到实战.md)
Expand All @@ -378,7 +389,8 @@ Dubbo 是一款国产的 RPC 框架,由阿里开源。相关阅读:

### 待办

- [ ] 数据结构总结重构
- [ ] 计算机网络知识点完善
- [ ] 分布式常见理论和算法总结完善

### 捐赠支持

Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -6,18 +6,18 @@
2. 布隆过滤器的原理介绍。
3. 布隆过滤器使用场景。
4. 通过 Java 编程手动实现布隆过滤器。
5. 利用Google开源的Guava中自带的布隆过滤器
5. 利用 Google 开源的 Guava 中自带的布隆过滤器
6. Redis 中的布隆过滤器。

### 1.什么是布隆过滤器?

首先,我们需要了解布隆过滤器的概念。

布隆过滤器(Bloom Filter)是一个叫做 Bloom 的老哥于1970年提出的。我们可以把它看作由二进制向量(或者说位数组)和一系列随机映射函数(哈希函数)两部分组成的数据结构。相比于我们平时常用的的 List、Map 、Set 等数据结构,它占用空间更少并且效率更高,但是缺点是其返回的结果是概率性的,而不是非常准确的。理论情况下添加到集合中的元素越多,误报的可能性就越大。并且,存放在布隆过滤器的数据不容易删除。
布隆过滤器(Bloom Filter)是一个叫做 Bloom 的老哥于 1970 年提出的。我们可以把它看作由二进制向量(或者说位数组)和一系列随机映射函数(哈希函数)两部分组成的数据结构。相比于我们平时常用的的 List、Map 、Set 等数据结构,它占用空间更少并且效率更高,但是缺点是其返回的结果是概率性的,而不是非常准确的。理论情况下添加到集合中的元素越多,误报的可能性就越大。并且,存放在布隆过滤器的数据不容易删除。

![布隆过滤器示意图](https://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-11/布隆过滤器-bit数组.png)

位数组中的每个元素都只占用 1 bit ,并且每个元素只能是 0 或者 1。这样申请一个 100w 个元素的位数组只占用 1000000Bit / 8 = 125000 Byte = 125000/1024 kb ≈ 122kb 的空间。
位数组中的每个元素都只占用 1 bit ,并且每个元素只能是 0 或者 1。这样申请一个 100w 个元素的位数组只占用 1000000Bit / 8 = 125000 Byte = 125000/1024 kb ≈ 122kb 的空间。

总结:**一个名叫 Bloom 的人提出了一种来检索元素是否在给定大集合中的数据结构,这种数据结构是高效且性能很好的,但缺点是具有一定的错误识别率和删除难度。并且,理论情况下,添加到集合中的元素越多,误报的可能性就越大。**

Expand All @@ -35,11 +35,9 @@

举个简单的例子:



![布隆过滤器hash计算](https://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-11/布隆过滤器-hash运算.png)

如图所示,当字符串存储要加入到布隆过滤器中时,该字符串首先由多个哈希函数生成不同的哈希值,然后将对应的位数组的下标设置为 1(当位数组初始化时,所有位置均为0)。当第二次存储相同字符串时,因为先前的对应位置已设置为 1,所以很容易知道此值已经存在(去重非常方便)。
如图所示,当字符串存储要加入到布隆过滤器中时,该字符串首先由多个哈希函数生成不同的哈希值,然后将对应的位数组的下标设置为 1(当位数组初始化时,所有位置均为 0)。当第二次存储相同字符串时,因为先前的对应位置已设置为 1,所以很容易知道此值已经存在(去重非常方便)。

如果我们需要判断某个字符串是否在布隆过滤器中时,只需要对给定字符串再次进行相同的哈希计算,得到值之后判断位数组中的每个元素是否都为 1,如果值都为 1,那么说明这个值在布隆过滤器中,如果存在一个值不为 1,说明该元素不在布隆过滤器中。

Expand All @@ -49,7 +47,7 @@

### 3.布隆过滤器使用场景

1. 判断给定数据是否存在:比如判断一个数字是否存在于包含大量数字的数字集中(数字集很大,5亿以上!)、 防止缓存穿透(判断请求的数据是否有效避免直接绕过缓存请求数据库)等等、邮箱的垃圾邮件过滤、黑名单功能等等。
1. 判断给定数据是否存在:比如判断一个数字是否存在于包含大量数字的数字集中(数字集很大,5 亿以上!)、 防止缓存穿透(判断请求的数据是否有效避免直接绕过缓存请求数据库)等等、邮箱的垃圾邮件过滤、黑名单功能等等。
2. 去重:比如爬给定网址的时候对已经爬取过的 URL 去重。

### 4.通过 Java 编程手动实现布隆过滤器
Expand Down Expand Up @@ -206,7 +204,7 @@ true

实际使用如下:

我们创建了一个最多存放 最多 1500个整数的布隆过滤器,并且我们可以容忍误判的概率为百分之(0.01)
我们创建了一个最多存放 最多 1500 个整数的布隆过滤器,并且我们可以容忍误判的概率为百分之(0.01)

```java
// 创建布隆过滤器对象
Expand All @@ -224,7 +222,7 @@ System.out.println(filter.mightContain(1));
System.out.println(filter.mightContain(2));
```

在我们的示例中,当`mightContain()` 方法返回 *true* 时,我们可以99%确定该元素在过滤器中,当过滤器返回 *false* 时,我们可以100%确定该元素不存在于过滤器中。
在我们的示例中,当`mightContain()` 方法返回 _true_ 时,我们可以 99%确定该元素在过滤器中,当过滤器返回 _false_ 时,我们可以 100%确定该元素不存在于过滤器中。

**Guava 提供的布隆过滤器的实现还是很不错的(想要详细了解的可以看一下它的源码实现),但是它有一个重大的缺陷就是只能单机使用(另外,容量扩展也不容易),而现在互联网一般都是分布式的场景。为了解决这个问题,我们就需要用到 Redis 中的布隆过滤器了。**

Expand All @@ -234,53 +232,53 @@ System.out.println(filter.mightContain(2));

Redis v4.0 之后有了 Module(模块/插件) 功能,Redis Modules 让 Redis 可以使用外部模块扩展其功能 。布隆过滤器就是其中的 Module。详情可以查看 Redis 官方对 Redis Modules 的介绍 :https://redis.io/modules

另外,官网推荐了一个 RedisBloom 作为 Redis 布隆过滤器的 Module,地址:https://github.com/RedisBloom/RedisBloom。其他还有:
另外,官网推荐了一个 RedisBloom 作为 Redis 布隆过滤器的 Module,地址:https://github.com/RedisBloom/RedisBloom。其他还有:

- redis-lua-scaling-bloom-filter(lua 脚本实现):https://github.com/erikdubbelboer/redis-lua-scaling-bloom-filter
- pyreBloom(Python中的快速Redis 布隆过滤器) :https://github.com/seomoz/pyreBloom
- pyreBloom(Python 中的快速 Redis 布隆过滤器) :https://github.com/seomoz/pyreBloom
- ......

RedisBloom 提供了多种语言的客户端支持,包括:Python、Java、JavaScript 和 PHP。

#### 6.2 使用Docker安装
#### 6.2 使用 Docker 安装

如果我们需要体验 Redis 中的布隆过滤器非常简单,通过 Docker 就可以了!我们直接在 Google 搜索 **docker redis bloomfilter** 然后在排除广告的第一条搜素结果就找到了我们想要的答案(这是我平常解决问题的一种方式,分享一下),具体地址:https://hub.docker.com/r/redislabs/rebloom/ (介绍的很详细 )。
如果我们需要体验 Redis 中的布隆过滤器非常简单,通过 Docker 就可以了!我们直接在 Google 搜索 **docker redis bloomfilter** 然后在排除广告的第一条搜素结果就找到了我们想要的答案(这是我平常解决问题的一种方式,分享一下),具体地址:https://hub.docker.com/r/redislabs/rebloom/ (介绍的很详细 )。

**具体操作如下:**

```
➜ ~ docker run -p 6379:6379 --name redis-redisbloom redislabs/rebloom:latest
➜ ~ docker exec -it redis-redisbloom bash
root@21396d02c252:/data# redis-cli
127.0.0.1:6379>
127.0.0.1:6379>
```

#### 6.3常用命令一览
#### 6.3 常用命令一览

> 注意: key : 布隆过滤器的名称,item : 添加的元素。
> 注意: key : 布隆过滤器的名称,item : 添加的元素。

1. **`BF.ADD `**:将元素添加到布隆过滤器中,如果该过滤器尚不存在,则创建该过滤器。格式:`BF.ADD {key} {item}`。
2. **`BF.MADD `** : 将一个或多个元素添加到“布隆过滤器”中,并创建一个尚不存在的过滤器。该命令的操作方式`BF.ADD`与之相同,只不过它允许多个输入并返回多个值。格式:`BF.MADD {key} {item} [item ...]` 。
1. **`BF.ADD`**:将元素添加到布隆过滤器中,如果该过滤器尚不存在,则创建该过滤器。格式:`BF.ADD {key} {item}`。
2. **`BF.MADD`** : 将一个或多个元素添加到“布隆过滤器”中,并创建一个尚不存在的过滤器。该命令的操作方式`BF.ADD`与之相同,只不过它允许多个输入并返回多个值。格式:`BF.MADD {key} {item} [item ...]` 。
3. **`BF.EXISTS` ** : 确定元素是否在布隆过滤器中存在。格式:`BF.EXISTS {key} {item}`。
4. **`BF.MEXISTS`** : 确定一个或者多个元素是否在布隆过滤器中存在格式:`BF.MEXISTS {key} {item} [item ...]`。

另外,`BF.RESERVE` 命令需要单独介绍一下:

这个命令的格式如下:

`BF.RESERVE {key} {error_rate} {capacity} [EXPANSION expansion] `。
`BF.RESERVE {key} {error_rate} {capacity} [EXPANSION expansion]`。

下面简单介绍一下每个参数的具体含义:

1. key:布隆过滤器的名称
2. error_rate :误报的期望概率。这应该是介于0到1之间的十进制值。例如,对于期望的误报率0.1%(1000中为1),error_rate应该设置为0.001。该数字越接近零,则每个项目的内存消耗越大,并且每个操作的CPU使用率越高
3. capacity: 过滤器的容量。当实际存储的元素个数超过这个值之后,性能将开始下降。实际的降级将取决于超出限制的程度。随着过滤器元素数量呈指数增长,性能将线性下降。
2. error_rate :误报的期望概率。这应该是介于 0 到 1 之间的十进制值。例如,对于期望的误报率 0.1%(1000 中为 1),error_rate 应该设置为 0.001。该数字越接近零,则每个项目的内存消耗越大,并且每个操作的 CPU 使用率越高
3. capacity: 过滤器的容量。当实际存储的元素个数超过这个值之后,性能将开始下降。实际的降级将取决于超出限制的程度。随着过滤器元素数量呈指数增长,性能将线性下降。

可选参数:

- expansion:如果创建了一个新的子过滤器,则其大小将是当前过滤器的大小乘以`expansion`。默认扩展值为2。这意味着每个后续子过滤器将是前一个子过滤器的两倍。
- expansion:如果创建了一个新的子过滤器,则其大小将是当前过滤器的大小乘以`expansion`。默认扩展值为 2。这意味着每个后续子过滤器将是前一个子过滤器的两倍。

#### 6.4实际使用
#### 6.4 实际使用

```shell
127.0.0.1:6379> BF.ADD myFilter java
Expand All @@ -294,4 +292,3 @@ root@21396d02c252:/data# redis-cli
127.0.0.1:6379> BF.EXISTS myFilter github
(integer) 0
```

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