1. noSQL - Redis
by
Ramon Wartala
10 February 2010

2. About Me
• CTO Ströer Interactive GmbH
• co2alarm.com
• Co-founder German Rails Usergroup
• Author
• Dipl.-Inform.
Please contact me @rawar
noSQL - Redis

3. • REmote DIctonary Server
• Redis is an advanced key-value store
• It is similar to memcached, memory based
• Keys are strings but values can have types
of "NONE", "STRING", "LIST", "SET",
"SORTED SETS "
• Hosted on http://code.google.com/p/redis/
downloads/
• supports EXPIRE (timeout to keys)
noSQL - Redis

4. • Redis server was designed and written by
Salvatore Sanfilippo
• Redis is written in less then 6000 LoC with
ANSI C
• semi persistent mode and fully persistent
mode
• master-slave replication possible
• Command reference http://
code.google.com/p/redis/wiki/
CommandReference
noSQL - Redis

5. Ruby´isch connectivity
http://ohm.keyvalue.org/, Object-hash
mapping library for Redis
http://github.com/ezmobius/redis-rb ,
Ruby wrapper by Ezra Zygmuntowicz
http://github.com/madsimian/em-redis ,
Ruby Eventmaschine by Jonathan Broad
noSQL - Redis

6. examples
creative commons http://www.flickr.com/photos/33306521@N00/3654138580/

7. key-values: simple2.rb
noSQL - Redis

8. increment / decrement: counter.rb
noSQL - Redis

9. lists: lists2.rb
noSQL - Redis

10. sets: sets2.rb
noSQL - Redis

11. sorted sets: sorted.rb
noSQL - Redis

12. further readings
• http://www.paperplanes.de/2009/10/30/
how_to_redis.html
• http://blog.grayproductions.net/articles/
lists_and_sets_in_redis
• http://www.gittr.com/ • http://gist.github.com/120067
• http://agilewebdevelopment.com/plugins/
acts_as_redis_counter
• http://amix.dk/blog/viewEntry/19458
• http://ohm.keyvalue.org/
• http://highscalability.com/product-redis-not-
just-another-key-value-store
• http://simonwillison.net/2009/Oct/22/redis/ • http://mwrc2009.confreaks.com/13-
mar-2009-19-24-redis-key-value-nirvana-
ezra-zygmuntowicz.html
• http://ozmm.org/posts/sort_in_redis.html
• http://www.digitalhobbit.com/2009/11/08/
building-a-twitter-filter-with-sinatra-redis-
and-tweetstream/
• http://github.com/nateware/redis-textsearch
noSQL - Redis