NoSQL

Main Idea
==========
- ไม่จำเป็นต้องใช้ relational db ในการเก็บข้อมูล
ใช้แค่ primary key look-up ก็เพียงพอ-> retrieve ข้อมูลแล้ว
- Just put the schema at the app level and keep it all in one place
, rather than duplicating it at the database level.

Category
=========
- Key/Value
Pure key/value stores are blobs stored by key.
- Tabular
Some projects use a Google BigTable-like data model
which we call “tabular” here —
or one can think of it as “multidimensional tabular”.
- Document-Oriented
Typical of these are JSON-style data stores.


Common Characters
=================
- Schema-Free data model
- de-normalized
- Distributed (Good Response Time, ...)
- Shard
- Replicated
- Eventually Consistent
- Map/Reduce

เรียบเรียงโดย สิริพงษ์ พงศ์ภิญโญภาพ

References
============
http://www.narisa.com/blog/up1/index.php?showentry=1650
http://nontster.wordpress.com/2009/12/15/413/
http://wiki.apache.org/cassandra/ArchitectureOverview
http://www.mongodb.org/display/DOCS/Sharding+Introduction
http://nosql-databases.org/
http://www.linux-mag.com/cache/7579/1.html
http://blog.mongodb.org/post/142940558/what-is-the-right-data-model