Geek Academy Week 3 :: Redis for developer - Redis - With Java Library => Jedis - With Spring Data :: Redis

1. REDIS
For Developer
3rd WEEK
SATURDAY, JULY 06, 2013 – SUNDAY, JULY 07, 2013
GEEK ACADEMY 2013

2. INSTRUCTOR TEAM
TAVEE SOMKIAT THAWATCHAI
Tavee (Vee) Khunbida Somkiat (Pui) Puisungnuen Thawatchai (Boy) Jongsuwanpaisan
Siam Chamnan Kit
tavee@sprint3r.com
Siam Chamnan Kit
somkiat@sprint3r.com
Siam Chamnan Kit
thawatchai@sprint3r.com

3. WHAT IS REDIS ?
o REmote DIrectory Server
o By Salvatore Sanfilippo (@antirez) working at VMWare
o March 2009
o redis.io

4. WHAT IS REDIS ?
o REmote DIrectory Server
o NOSQL => Key-Value
o Data Structure Server

5. NOSQL ( Not Only SQL )
o Key-Value Store
o Document Database
o Column Store
o Graph Database
http://www.10gen.com/nosql

6. NOSQL ( Not Only SQL )
o Key-Value Store
o Redis, Riak, Memcached, Tokyo Cabinet, LevelDB
o Document Database
o MongoDB, CouchDB, RethinkDB
o Column Family Store
o Cassandra, Hadoop, HBase
o Graph Database
o Neo4J, HyperGraphDB, InfoGrid

7. WHY WE USE REDIS ?
o Very Fast ( In memory )
o Few Dependencies
o Single Thread
o Lot of client available
o Java
o Ruby
o PHP
o Python
o .Net

8. FEATURES
o Values Type
o String
o List
o Set
o Hash
o Sorted Set
o Persistence
o Memory
o Snapshot
o Append Only Log ( AOL )

9. FEATURES
o Replication
o Master-Slave
o Pub-Sub
o Clustering ( Beta version )

10. WHO USE REDIS ?
http://redis.io/topics/whos-using-redis

11. REDIS IN PRACTICE
o View Count
o Presence
o Activity Feed
o Suggestion
o Caching
o Tracking
o Logging
o ….

12. DATA STRUCTURE
GEEK ACADEMY 2013

13. List
o List of String
o Sorted by insertion order
o Max length of List = 232 -1
o Big O
o Add operation = O(1)
o Access operation = O(S+N)
o Update = O(1)
o Delete = O(1)

14. Set
o Unordered collections of String
o Not repeat members
o Max length of List = 232 -1
o Operation => Union, Intersection, Different
o Big O
o Add operation = O(N)
o Access operation = O(N)
o Update = O(1)
o Delete = O(1)
o Exists = O(1)

15. Sorted Set
o Like Set BUT …
o Ordered collections of String by Score
o Big O
o Add operation = O(log(N))
o Access operation = O(log(N)+M)
o Delete = O(M*log(N))

16. Hash
o Mapping Key-Value
o Max length of List = 232 -1
o Big O
o Add operation = O(N)
o Access operation = O(1)
o Delete = O(1)

17. Summary

18. INSTALLATION FOR
DEV
GEEK ACADEMY 2013

19. FOR WINDOWS
o Download at
o https://github.com/dmajkic/redis/downloads
o Commands
o redis-server.exe
o redis-cli.exe
o redis-benchmark

20. FOR UNIX
$ wget http://redis.googlecode.com/files/redis-2.6.14.tar.gz
$ tar xzf redis-2.6.14.tar.gz
$ cd redis-2.6.14
$ make
Starting server
$ src/redis-server
Interact with Redis
$ src/redis-cli

21. FOR MAC
o Up to you

22. INSTALLATION FOR
DEVOPS
GEEK ACADEMY 2013

23. VAGRANT + PUPPET
o OS = Ubuntu
o Configure repository of Redis
o Install with apt-get

24. Configure repository

25. Install and Starting Redis Service

26. Install on Virtual Machine
$vagrant up
$vagrant reload
$vagrant provision

27. BASIC USAGE
GEEK ACADEMY 2013

28. LET’S DEMO
o redis-cli
o http://try.redis.io/
o http://redis.io/commands

29. DEMO 1
o PING
o INFO
o KEYS
o EXISTS
o DEL
o FLUSHDB

30. DEMO 2 :: Working with String
o SET
o GET
o GETRANGE
o APPEND

31. DEMO 3 :: Counter
o INCR
o INCRBY
o DECR
o DECRBY

32. DEMO 4 :: Working with List
o LPUSH
o RPUSH
o LRANGE
o LTRIM
o LLEN

33. DEMO 5 :: Working with Set
o SADD
o SMEMBERS
o SINTER
o SPOP
o SRANDMEMBER
o SUNIONSTORE

34. DEMO 6 :: Working with Sorted Set
o ZADD
o ZRANGE
o ZRANGEBYSCORE
o ZRANK
o ZINCRBY
o ZREVRANGE

35. DEMO 7 :: Working with Hash
o HSET
o HGET
o HGETALL
o HDEL
o HEXISTS
o HLEN
o HMSET
o HMGET

36. REDIS#VIEW COUNT
GEEK ACADEMY 2013

37. View count with Redis

38. REDIS#PRESENCE
GEEK ACADEMY 2013

39. Presence with Redis
o Presence = Who’s Online ?
o What’s Data Structure ?

40. Presence with Redis
Online
Users Friends

41. Data Structure ?
o List
o Set
o Sorted Set

42. Implementation ?
o Set
o Define Key
o Online user
o Key = user:online:<time>
o Value = <user id>
o Friends
o Key = user:friend:<user id>
o Value = <user id>

43. Implementation ?
o Online Users
o sadd user:online:1 1
o sadd user:online:1 2
o sadd user:online:1 3
o sadd user:online:2 3
o sadd user:online:2 4

44. Implementation ?
o Friends by User
o sadd user:friend:1 2
o sadd user:friend:1 3

45. Implementation ?
o Find Friends are online in last 2 minutes
o sunionstore online_users user:online:1 user:online:2
o sinter online_users user:friend:1

46. Presence with Redis

47. REDIS#SUGGESTION
GEEK ACADEMY 2013

48. Keyword Suggestion with Redis

49. DBRMS Solution
o SELECT KEYWORD
o FROM SOME_TABLE
o WHERE LOWER(KEYWORD) LIKE “redis%”

50. Redis Solution
o What is Data Structure ?
o List
o Set
o Sorted Set

51. Implementation ?
o Sorted Set
o Example => redis
o r
o re
o red
o redi
o redis

52. Specified word
o Example => redis
o r
o re
o red
o red*
o redi
o redis
o redis*

53. Algorithm
o Called N-gram
http://en.wikipedia.org/wiki/N-gram
http://books.google.com/ngrams/

54. Add data to Redis Sorted Set
o zadd my_data 0 r
o zadd my_data 0 re
o zadd my_data 0 red
o zadd my_data 0 red*
o zadd my_data 0 redi
o zadd my_data 0 redis
o zadd my_data 0 redis*

55. List of data in Sorted Set
o zrange my_data 0 -1
o zrank my_data r
o zrank my_data re

56. How to apply in application ?
o Let’s discussion

57. REDIS#CACHING
GEEK ACADEMY 2013

58. Caching
o Denormalization Data
o Generalization Cache with LRU, TTL

59. Redis :: Memory policy
o Volatile-LRU
o Volatile-TTL
o Volatile-Random
o AllKeys-LRU
o AllKeys-Random
o NoEviction

60. WORKING WITH JAVA
GEEK ACADEMY 2013

61. Redis Client Library
o Jedis
o JRedis
o JDBC-Redis
o RJC
o Redis-protocol
o Lettuce
http://redis.io/clients

62. For Traditional Developer
o Goto web
o Search and Download
o Copy to build path of project !!!!
o Not for geek ….

63. For Geek
o Use Maven or Gradle

64. Jedis
o https://github.com/xetorthio/jedis
o Maven Dependency
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.0.0</version>
<type>jar</type>
<scope>compile</scope>
</dependency>

65. Jedis :: Easy to use
Jedis jedis = new Jedis("localhost");
jedis.set("foo", "bar");
String value = jedis.get("foo");

66. WORKING WITH
SPRING FRAMEWORK
GEEK ACADEMY 2013

67. Let’s go
o We use Spring Data with Redis
o http://www.springsource.org/spring-data/redis

68. Working with Maven
<repository>
<id>spring-release</id>
<name>Spring Maven RELEASE Repository</name>
<url>http://maven.springframework.org/release</url>
</repository>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.0.5.RELEASE</version>
</dependency>

69. Working with Annotation
@Configuration
public class RedisConfig {
@Bean
JedisConnectionFactory jedisConnectionFactory() {
JedisConnectionFactory jedisConnectionFactory = new JedisConnectionFactory();
jedisConnectionFactory.setHostName(redisHost);
jedisConnectionFactory.setPort(redisPort);
return jedisConnectionFactory;
}
@Bean
RedisTemplate<String, String> redisTemplate() {
final RedisTemplate<String, String> template = new RedisTemplate<String, String>();
template.setConnectionFactory(jedisConnectionFactory());
template.setKeySerializer(new StringRedisSerializer());
template.setHashValueSerializer(new GenericToStringSerializer<Object>(Object.class));
template.setValueSerializer(new GenericToStringSerializer<Object>(Object.class));
return template;
}
}

70. Using RedisTemplate in Repository
@Repository
public class LoggingDaoImpl implements LoggingDao {
private final static String LOGGING_KEY = "logging";
@Autowired
RedisTemplate<String, String> redisTemplate;
public void addData(String key, String value) {
redisTemplate.opsForList().rightPush(LOGGING_KEY, key);
redisTemplate.opsForValue().set(key, value);
System.out.println( LOGGING_KEY );
System.out.println( key );
}
}

71. See more
o https://github.com/up1/geeky_week3_demo
o https://github.com/up1/Spring-Framework-
Demo/tree/master/SpringRedis

72. Question ?

73. GEEK ACADEMY 2013

74. THANK YOU FOR
YOUR TIME
GEEK ACADEMY 2013