NoSQL or not NoSQL? 28. June 2010
NoSQL or not NoSQL?
Nicolas Ruflin
Nicolas Ruflin

NoSQL or not NoSQL? 8. December 2010
About Me
• Nicolas Ruflin @ruflin
• Head Developer useKit
• Master Thesis: Adequate storage of
social data
• Elastica: ElasticSearch PHP client
Nicolas Ruflin

NoSQL or not NoSQL? 8. December 2010
NoSQL: Not only SQL
• Point being - when I rant about the suitability
of NoSQL solutions, I’m mainly complaining
that in many cases it seems to me that they’re
using them because they’re popular or
trendy and not because they are or are not
actually suited to the task at hand. ~Monty
Taylor
• RDBMS was used in some many cases just
because it was around for such a long time.
~Alex Popescu
Nicolas Ruflin

NoSQL or not NoSQL? 8. December 2010
Why NoSQL?
http://gigaom.com/cloud/sensor-networks-top-social-networks-for-big-data-2/
Nicolas Ruflin

NoSQL or not NoSQL? 8. December 2010
Why NoSQL?
• What is the problem with SQL?
• Semi structured data
• Horizontal scalability (read & write)
• Thousands of nodes
• ...
Nicolas Ruflin

NoSQL or not NoSQL? 8. December 2010
NoSQL Data Models
http://blogs.neotechnology.com/emil/2009/11/nosql-scaling-to-size-and-scaling-to-complexity.html
Nicolas Ruflin

NoSQL or not NoSQL? 8. December 2010
NoSQL vs. SQL
Data model Query language
Structured
SQL solutions SQL
(normalized)
NoSQL solutions Semi structured MapReduce, ...
Nicolas Ruflin

NoSQL or not NoSQL? 8. December 2010
NoSQL Challenges
• Complexity
• Setup
• Queries (MapReduce)
• Data models
• Maturity
Nicolas Ruflin

NoSQL or not NoSQL? 8. December 2010
Where to use NoSQL
• Social data
• Data processing (Hadoop)
• Search (Lucene)
• Caching (Memcache, ...)
• Data Warehousing
• Logging
• ...
Nicolas Ruflin

NoSQL or not NoSQL? 8. December 2010
NoSQL or SQL?
• Wrong question
• What is your problem?
• Transactions
• Amount of data
• Data structure
Nicolas Ruflin

NoSQL or not NoSQL? 8. December 2010
NoSQL or not NoSQL?
SQ
L
QL
N oS
Nicolas Ruflin

NoSQL or not NoSQL? 8. December 2010
NoSQL Getting Started
• Blogs
• http://nosql.mypopescu.com/
• http://highscalability.com/
• Papers
• Dynamo (Amazon)
• BigTable (Google)
Nicolas Ruflin

NoSQL or not NoSQL? 8. December 2010
Questions
-
Discussion
Nicolas Ruflin

NoSQL or not NoSQL? 8. December 2010
CAP Theorem
http://blog.nahurst.com/visual-guide-to-nosql-systems
Nicolas Ruflin