NoSQL数据库笔谈.docx
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NoSQL
数据库笔谈
颜开
序
...................................................................................................
3
思想篇
..............................................................................................
4
CAP..............................................................................................4
最终一致性
......................................................................................5
变体
...........................................................................................5
BASE ............................................................................................6
其他 ..............................................................................................6
I/O
的五分钟法则
............................................................................6
不要删除数据
................................................................................7
RAM
是硬盘 , 硬盘是磁带
....................................................................8
Amdahl
定律和
Gustafson
定律 ...........................................................9
万兆以太网 ................................................................................. 10
手段篇
............................................................................................
10
一致性哈希
.................................................................................... 10
亚马逊的现状 ............................................................................ 12
算法的选择
.............................................................................. 12
Quorum NRW............................................................................... 12
Vector clock................................................................................. 13
Virtual node................................................................................. 14
gossip......................................................................................... 15
Gossip (State Transfer Model) ..................................................... 15
Gossip (Operation Transfer Model) ............................................... 17
Merkle tree.................................................................................. 20
Paxos
......................................................................................... 20
背景
......................................................................................... 20
DHT............................................................................................ 22
Map Reduce Execution .................................................................. 23
Handling Deletes .......................................................................... 23
存储实现 ....................................................................................... 23
节点变化 ....................................................................................... 25
列存 ............................................................................................ 27
描述
......................................................................................... 27
特点
......................................................................................... 28
软件篇
............................................................................................
28
亚数据库 ....................................................................................... 28
MemCached.............................................................................. 28
特点 ....................................................................................... 28
内存分配 ................................................................................. 30
缓存策略 ................................................................................. 30
缓存数据库查询
......................................................................... 30
数据冗余与故障预防
................................................................... 31
Memcached
客户端（ mc ） .......................................................... 31
缓存式的
Web
应用程序架构
.......................................................... 31
性能测试 ................................................................................. 31
dbcached.................................................................................. 32
Memcached 和
dbcached 在功能上一样吗 ? .................................... 32
列存系列 ....................................................................................... 33
Hadoop
之
Hbase......................................................................... 33
耶鲁大学之
HadoopDB................................................................... 34
GreenPlum................................................................................ 34
FaceBook
之
Cassandra
................................................................ 34
Cassandra
特点 ........................................................................ 35
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