2006年,阿里巴巴B2B与淘宝DBA团队第一次引入了校园招聘的毕业生,2年半的时间过去了,当年加入淘宝的毕业生成了淘宝开发DBA的主管,而当年加入阿里巴巴B2B的毕业生,就是本书的作者。第一次听别人说起作者的时候,有2点给我的印象是比较深的,一是有误传该
2006年,阿里巴巴B2B与淘宝DBA团队第一次引入了校园招聘的毕业生,2年半的时间过去了,当年加入淘宝的毕业生成了淘宝开发DBA的主管,而当年加入阿里巴巴B2B的毕业生,就是本书的作者。第一次听别人说起作者的时候,有2点给我的印象是比较深的,一是有误传该学生毕业于军校,以至于后来,又误传他曾经加入过海军陆战队;二是该学生目标非常清晰,就是一定要做DBA,对于其它职位不予考虑。至于更后来,又知道他是我老乡,甚至春节一起回家,那就是后话了。
作者刚毕业的时候其实学的是Oracle,后来,一是因为工作本身的需要,二来在我的建议下,改走了MySQL这条路。我很高兴作者能做出这个选择,并能在MySQL这条路上持之以恒的坚持下来。在当时,做MySQL DBA,其实是一个非常好的机会,也是一个新的切入点。Oracle从2001年在国内开始起步,2005年左右达到鼎盛的辉煌时期,同时造就了一大批大师级别的Oracle DBA,也成为后来者难以逾越的一道高墙。MySQL则不一样,这1-2年刚起步,未来2年左右如果能达到鼎盛时代的话,同样应当能成就一批大师,作者有可能就能成为其中的一员。
在这么一个浮躁的年代,一个物质欲横流的时代,作者能持续保持学习的动力,并且不断进步提升,是非常不容易的。这本书,既是作者这几年来DBA成长之路的一个总结,更是非常好的一个经验借鉴,特别是对于那些刚走出校园的毕业生,这本书或者能让你们少走很多的弯路。很多毕业生,或者是渴望成功的普通工程师,总是把眼光放在别人成功的路上,但是,实际上,更容易成功的地方,是从来没有人成功过的地方。
我写过书,深知写书的难度,把知识与经验从点汇总到面的艰辛,但是,更值得兴奋的,其实是那种艰辛之后的收获,一通百通之后的成就。我对MySQL的研究不是很深入,但是,从我对作者本人的熟知,对作者做过的实际案例的了解,我相信本书能给大家带来耳目一新的感觉。同时,也感谢作者的辛苦工作,能把自己的知识与经验分享给大家,感谢作者能给大家带来如此好的一本书。
陈吉平
淘宝首席DBA,Oracle ACE
《搭建oracle高可用环境》一书作者
注:此推荐序版权归 陈吉平(Piner)所有
原文地址:《MySQL性能调优与架构设计》推荐序-From Piner, 感谢原作者分享。

TograntpermissionstonewMySQLusers,followthesesteps:1)AccessMySQLasauserwithsufficientprivileges,2)CreateanewuserwiththeCREATEUSERcommand,3)UsetheGRANTcommandtospecifypermissionslikeSELECT,INSERT,UPDATE,orALLPRIVILEGESonspecificdatabasesortables,and4)

ToaddusersinMySQLeffectivelyandsecurely,followthesesteps:1)UsetheCREATEUSERstatementtoaddanewuser,specifyingthehostandastrongpassword.2)GrantnecessaryprivilegesusingtheGRANTstatement,adheringtotheprincipleofleastprivilege.3)Implementsecuritymeasuresl

ToaddanewuserwithcomplexpermissionsinMySQL,followthesesteps:1)CreatetheuserwithCREATEUSER'newuser'@'localhost'IDENTIFIEDBY'password';.2)Grantreadaccesstoalltablesin'mydatabase'withGRANTSELECTONmydatabase.TO'newuser'@'localhost';.3)Grantwriteaccessto'

The string data types in MySQL include CHAR, VARCHAR, BINARY, VARBINARY, BLOB, and TEXT. The collations determine the comparison and sorting of strings. 1.CHAR is suitable for fixed-length strings, VARCHAR is suitable for variable-length strings. 2.BINARY and VARBINARY are used for binary data, and BLOB and TEXT are used for large object data. 3. Sorting rules such as utf8mb4_unicode_ci ignores upper and lower case and is suitable for user names; utf8mb4_bin is case sensitive and is suitable for fields that require precise comparison.

The best MySQLVARCHAR column length selection should be based on data analysis, consider future growth, evaluate performance impacts, and character set requirements. 1) Analyze the data to determine typical lengths; 2) Reserve future expansion space; 3) Pay attention to the impact of large lengths on performance; 4) Consider the impact of character sets on storage. Through these steps, the efficiency and scalability of the database can be optimized.

MySQLBLOBshavelimits:TINYBLOB(255bytes),BLOB(65,535bytes),MEDIUMBLOB(16,777,215bytes),andLONGBLOB(4,294,967,295bytes).TouseBLOBseffectively:1)ConsiderperformanceimpactsandstorelargeBLOBsexternally;2)Managebackupsandreplicationcarefully;3)Usepathsinst

The best tools and technologies for automating the creation of users in MySQL include: 1. MySQLWorkbench, suitable for small to medium-sized environments, easy to use but high resource consumption; 2. Ansible, suitable for multi-server environments, simple but steep learning curve; 3. Custom Python scripts, flexible but need to ensure script security; 4. Puppet and Chef, suitable for large-scale environments, complex but scalable. Scale, learning curve and integration needs should be considered when choosing.

Yes,youcansearchinsideaBLOBinMySQLusingspecifictechniques.1)ConverttheBLOBtoaUTF-8stringwithCONVERTfunctionandsearchusingLIKE.2)ForcompressedBLOBs,useUNCOMPRESSbeforeconversion.3)Considerperformanceimpactsanddataencoding.4)Forcomplexdata,externalproc


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