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+0  C Mohan 讨论NoSQL的得与失

Tag: My Reading | ACID | nosql | tradeoff
jametong 发于 2013年03月18日 09:12 | 点击: 2050 | 展开摘要
History Repeats Itself, C Mohan 讨论NoSQL的得与失

【1】关系数据库的不足,

a. 不能很好的为Web 2.0的业务做建模(搜索与社交图谱),

b. 无法在数据库层面很好的与JSON等做数据交换,

c. SQL语言与编程语言的差异带来的开发学习使用成本,

d.是否开源,代码能否改动,

f. 关系数据库的优化器、解析器代价太大,影响响应时间、吞吐量,

g.不能很好的满足业务对Scalability以及低成本服务器的需求,

h.

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+0  One size does not fit all

Tag: oracle | tradeoff
jametong 发于 2013年03月16日 15:43 | 点击: 1741 | 展开摘要
To date, nobody has ever discovered a data layout that is efficient for all usage patterns. As a general rule, simpler data layouts are often faster to write, while fancier ones can boost query performance. Specific tradeoffs include, but h

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+0  The Cost of Compromise: 11 Things You Do To Make Storage Run Faster

Tag: Uncategorized | flash | ssd | tradeoff
jametong 发于 2012年12月13日 18:27 | 点击: 1733 | 展开摘要
Over-provisioning (more is not necessarily better)

Short-stroking (try and keep a straight face)

IO Scheduling (there is no app for this)

Caching (what’s the penalty for a “cache miss”?)

Automatic Tiering (who gets to decide?)

Manually

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