1.对于mysql学习,经常翻看一些博客,论坛,好像或多或少有mysq锁机制的学习与总结,所以今天有必要

对mysql锁机制的一些个人的总结,以便以后深入的学习。

2.学习这件事,从来都是“深入浅出”的,今天留个痕迹,说不定以后“受益匪浅”。

a.数据库锁是什么

数据库锁就是为了保证数据库数据的一致性在一个共享资源被并发访问时使得数据访问顺序化的机制。

MySQL数据库的锁机制比较独特,支持不同的存储引擎使用不同的锁机制。

b.mysql锁机制的3中类型

表级锁,行级锁,页级锁

c.各级锁的特点

表级锁:实现逻辑较为简单,加锁速度快,开销小,不会发生死锁;但粒度最大,发生锁冲突的几率最大,并发度最小,适用于以查询为主,极少量更新的系统。

行级锁:加锁慢,开销大,会发生死锁;但粒度最小,锁冲突率小,并发度最高,使用于并发查询大,有大量按索引条件并发更新少量不同数据的系统。

页级锁:介于表级锁和行级锁之间。

d.myisam存储引擎只支持表级锁。

它的锁模式分为两种:表共享读锁和表独占写锁。

MyISAM的读操作会阻塞其他用户的写操作,但不会阻塞其他用户的读操作。MyISAM的写操作会堵塞其他用户的读写操作。MyISAM的读写操作是串行的。

e.查看myisam存储引擎的锁情况

mysql> show status like 'table_locks%';

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-----Table_locks_immediate 立即释放表锁数
-----Table_locks_waited 等待表锁数,该值如较高,说明表锁争用较严重 f.测试信息

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" alt="" />

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g.MyISAM表写操作阻塞示例:

mysql> lock table stu write;

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g-1,select

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g-2,delete..from

aaarticlea/png;base64,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" alt="" />

g-3,update..set

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kvqYgtwI0xH8pcUW3wq63qqYktYLSRb8nP8wxXOpmnSQBpw15tldY55NVWxaTEHDDayL/cs/cujcXrZiS2gNGIrXgL720BU7u02Foj+vaj+gQg4ip5AM4QWwCcIbYAOENsAXCG2ALgDLEFwBliC4Azl/Z3EsP6yRln6xPAFn+VOt4yT58AEi4ttiwvqWboE4Bo2Icyl5Ya/GqrempiCxhtwFvylhc4g0nNzNYngIRh/0ksTQRebQFIu7T3tizF5+kTQAKxFW+Zp08ACZd23dYaSX6rtGDvNgHIuEoegDPEFgBniC0AzhBbAJwhtgA4Q2wBcIbYAuBM9+u24sHSdVLZOrteD5W83HTCPgFs9Y2teHDyks66Uh1l+2wpBWBfvWJLep0Sbil6IbNTHFj6rCjYozUANsNebZX+/4tXWwDS+r4lr8dWcsAhpD6LghXAMca82tq85qor1ZFevPGQAexrWGyVViO2AKTxk8R4C7EFTG2PnyQmoyrebilYcigFZbN9lhbs3SYAGVfJA3CG2ALgDLEFwBliC4AzxBYAZ4gtAM4QWwCcIbYAOENsAXBmwF+lruPl6nMvfQLnQWw18tIncB5KbCV/fS/e2Hf7UfOWbpf6BLA7Xm018tIncB7EViMvfQLnwU8SAThDbAFwhtgC4AyxBcAZYguAM8QWAGeILQDOEFsAnCG2ADhj/J3Eo9vM89LnIvzJW/tSS+OP+gVJRyuPk5BiK/6d4SO7NDikyYoZk1kjfWnfvbROXy7OEJzHaWJrvIpliXeJ19keW+H40jrdcZJgnF6xJT2FFuE/m8qXyfGWqaVJW+oY61umSA7bLFq2lDS+tE7p8VoqG9cBaGX/vK1sqfiZs6TyKL4f75scY5w9O1d299Ke6zrcbIwPXy+yptKqok7j/ewBAv11/OCa9cZiiCHlaVZ39m/2qiiYHLZG9PEt9S01pfGldSz9lK5h3QMHFOseW8rG5H3padYYCqVPOUsdfWRF8SWICWNNaXxFyiRHSjsaG7PMCLTSY6vlCR9vlJ4h0phecWOpY+nB0n9Ln9KXlvH6ML2NlvvG6YCeLO9tWeqsAeO39Kdc3dTJmsZSep/6oVn63Owl9Z+tL41X6iht2I9X356dDuiGq+QBOENsAXCG2ALgDLEFwBliC4AzxBYAX/4P3aH15fLxKTAAAAAASUVORK5CYII=" alt="" />

g-4,insert into..

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" alt="" />

h.到这里感觉加锁与没有加锁,貌似差距不是很大。。。???

i,再访问一下其他表的“增删改查”的操作

好吧,已经有一个表:stu;

aaarticlea/png;base64,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" alt="" />

i-1,select..

aaarticlea/png;base64,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" alt="" />

i-2,delete from..

aaarticlea/png;base64,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" alt="" />

i-3,insert into..

aaarticlea/png;base64,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" alt="" />

i-4,update..set..

aaarticlea/png;base64,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" alt="" />

j.发现,除表tem以外的表的“增删改查”都不好使,,这就是“MyISAM的写操作会堵塞其他用户的读写操作”的意思。

k.MyISAM表操作阻塞示例

aaarticlea/png;base64,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" alt="" />

l-1,select..

aaarticlea/png;base64,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" alt="" />

l-2,insert into..

aaarticlea/png;base64,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" alt="" />

l-3,delete from ..

aaarticlea/png;base64,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" alt="" />

l-4,update..set..

aaarticlea/png;base64,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" alt="" />

m,可以看出,自身除了“select”外,不容许进行其他的操作

n,在看看,对其他表的处理

o-1,select ..

aaarticlea/png;base64,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" alt="" />

o-2,insert into..

aaarticlea/png;base64,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" alt="" />

o-3,delete from..

aaarticlea/png;base64,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" alt="" />

0-4,update ..set..

aaarticlea/png;base64,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" alt="" />

p,可以看出,其他表“增删改查”操作都无法使用了。也即是“MySQL的读操作会堵塞读操作以外的操作,且会堵塞其他表的读写操作”。

q.参看:http://www.cnblogs.com/zmxmumu/p/4459745.html


												

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