memcache全面解析

cheng029

译者序..................................................................................................................................................4
第 1 章 memcached 的基础.................................................................................................................5
1.1 memcached 是什么？...............................................................................................................5
1.2 memcached 的特征...................................................................................................................6
协议简单.....................................................................................................................................6
基于 libevent 的事件处理..........................................................................................................6
内置内存存储方式.....................................................................................................................6
memcached 不互相通信的分布式.............................................................................................6
1.3 安装 memcached.......................................................................................................................7
memcached 的安装.....................................................................................................................7
memcached 的启动.....................................................................................................................8
1.4 用客户端连接...........................................................................................................................8
1.5 使用 Cache::Memcached..........................................................................................................9
使用 Cache::Memcached 连接 memcached................................................................................9
保存数据...................................................................................................................................10
获取数据...................................................................................................................................10
删除数据...................................................................................................................................10
增一和减一操作.......................................................................................................................10
1.6 总结.........................................................................................................................................11
第 2 章 理解 memcached 的内存存储..............................................................................................12
2.1 Slab Allocation 机制：整理内存以便重复使用...................................................................12
Slab Allocation 的主要术语.....................................................................................................13
2.2 在 Slab 中缓存记录的原理....................................................................................................13
2.3 Slab Allocator 的缺点.............................................................................................................13
2.4 使用 Growth Factor 进行调优................................................................................................14
2.5 查看 memcached 的内部状态................................................................................................15
2.6 查看 slabs 的使用状况...........................................................................................................16
2.7 总结.........................................................................................................................................17
第 3 章 memcached 的删除机制和发展方向...................................................................................18
3.1 memcached 在数据删除方面有效利用资源.........................................................................18
数据不会真正从 memcached 中消失......................................................................................18
Lazy Expiration.........................................................................................................................18
3.2 LRU：从缓存中有效删除数据的原理.................................................................................18
3.3 memcached 的最新发展方向.................................................................................................18
关于二进制协议.......................................................................................................................19
二进制协议的格式...................................................................................................................19
HEADER 中引人注目的地方..................................................................................................20
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3.4 外部引擎支持........................................................................................................................20
外部引擎支持的必要性...........................................................................................................20
简单 API 设计的成功的关键...................................................................................................21
重新审视现在的体系...............................................................................................................21
3.5 总结........................................................................................................................................22
第 4 章 memcached 的分布式算法...................................................................................................23
4.1 memcached 的分布式.............................................................................................................23
memcached 的分布式是什么意思？.......................................................................................23
4.2 Cache::Memcached 的分布式方法........................................................................................25
根据余数计算分散...................................................................................................................25
根据余数计算分散的缺点.......................................................................................................26
4.3 Consistent Hashing.................................................................................................................27
Consistent Hashing 的简单说明...............................................................................................27
支持 Consistent Hashing 的函数库..........................................................................................29
4.4 总结........................................................................................................................................29
第 5 章 memcached 的应用和兼容程序...........................................................................................30
5.1 mixi 案例研究.........................................................................................................................30
服务器配置和数量...................................................................................................................30
memcached 进程.......................................................................................................................31
memcached 使用方法和客户端...............................................................................................31
5.2 memcached 应用经验.............................................................................................................32
通过 daemontools 启动.............................................................................................................33
监视...........................................................................................................................................33
memcached 的性能...................................................................................................................33
5.3 兼容应用程序........................................................................................................................35
Tokyo Tyrant 案例.....................................................................................................................35
5.4 总结........................................................................................................................................36
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