To many on the outside, Redis looks like your average key-value store. To those in the know, Redis is a powerful data structure store that’s capable of doing much of what a full-featured database can handle. In this talk, Ryan will give a quick overview of Redis’ API and the datatypes it allows you to store and query. He’ll then take you through the process of designing a complex schema with Redis and demonstrate how using simple data structures can help you in making better decisions for your applications.

1. The Beauty of
Simplicity
Mastering Database Design with

4. What is this talk
about?

5. ChicagoDB
http://chicagodb.com

6. 1 2 3

7. 1 2 3
Basic Redis API

8. 1 2 3
Simple Use Cases

9. 1 2 3
Learning from Redis

11. SET the-answer 42
OK

12. GET the-answer
“42”

13. The End

15. 42 24

16. http://redis.io

17. Lists
RPUSH primes 2
(integer) 1
RPUSH primes 3
(integer) 2
RPUSH primes 5
(integer) 3

18. Lists
LRANGE primes 0 -1
1) “2”
2) “3”
3) “5”

19. Sets
SADD words foo
(integer) 1
SADD words bar
(integer) 1
SADD words foo
(integer) 0

20. Sets
SMEMBERS words
1) “foo”
2) “bar”

21. Sorted Sets
ZINCRBY words 1 foo
“1”
ZINCRBY words 1 bar
“1”
ZINCRBY words 1 foo
“2”

22. Sorted Sets
ZREVRANGE words 0 -1 WITHSCORES
1) “foo”
2) “2”
3) “bar”
4) “1”

23. Hashes
HSET person first_name Ryan
(integer) 1
HSET person last_name Briones
(integer) 1

24. Hashes
HGETALL person
1) “first_name”
2) “Ryan”
3) “last_name”
4) “Briones”

25. Queues
RPUSH queue foo
(integer) 1
RPUSH queue bar
(integer) 2
LPOP queue
“1”

26. Set Intersection
SADD fb_friends 1234567
(integer) 1
SADD fb_friends 1234568
(integer) 1
SADD purchasers 1234567
(integer) 1
SINTER fb_friends purchasers
1) 1234567

27. Chat Ser ver
ZADD room 1307420357571.96
{:msg => “Hello Mike”}
(integer) 1
ZADD room 1307420462678.8
{:msg => “Hello Joe”}
(integer) 1
ZADD room 1307420496256.58
{:msg => “Hello World”}
(integer) 1

28. Chat Ser ver
ZREVRANGE room 0 30
1) {...}
2) {...}
ZRANGEBYSCORE room
1307420357571.96 +inf
1) {...}

30. Application Data in
Redis

31. Data in RDBMS
id first_name last_name login
1 Ryan Briones ryanbriones
... ... ... ...

32. Data in Redis
INCR users:uids
“1”

33. Data in RDBMS
id first_name last_name login
1 Ryan Briones ryanbriones
... ... ... ...

34. Data in Redis
INCR users:uids
“1”
SET users:1:first_name Ryan
OK
SET users:1:last_name Briones
OK
SET users:1:login ryanbriones
OK

35. Data in RDBMS
id first_name last_name login
1 Ryan Briones ryanbriones
... ... ... ...

36. Data in Redis
KEYS users:1:*
1) users:1:first_name
2) users:1:last_name
3) users:1:login
GET users:1:first_name
“Ryan”
GET users:1:last_name
“Briones”
GET users:1:login
“ryanbriones”

37. Data in RDBMS
SELECT * FROM users;

38. Data in Redis
SADD users:all 1
(integer) 1
SMEMBERS users:all
1) 1
2) ...

39. Data in Redis
users:uids 1
users:1:first_name Ryan
users:1:last_name Briones
users:1:login ryanbriones
users:all {1}

40. Data in Redis
SET users:login:ryanbriones:uid 1
OK
GET users:login:ryanbriones:uid
“1”

41. Data in RDBMS
SELECT * FROM users ORDER BY last_name DESC;

42. Data in Redis
users:uids 1
users:1:first_name Ryan
users:1:last_name Briones
users:1:login ryanbriones
users:all {1}
users:login:ryanbriones:uid 1

43. Data in Redis
SET users:last_name:Briones:uid 100
1 OK
SADD users_last_names Briones
OK
SET users:last_name:Andrews:uid 200
2 OK
SADD users_last_names Andrews
OK
SORT users_last_names ALPHA DESC BY *
GET users:last_name:*:uid
1) 100
2) 200

44. Data in Redis
SORT users_last_names ALPHA DESC BY *
GET users:last_name:*:uid
STORE users_uid_by_last_name_desc
(integer) 2
TYPE users_uid_by_last_name_desc
list
LRANGE users_uid_by_last_name_desc 0 -1
1) 200
2) 100

45. Data in Redis
EXPIRE users_uid_by_last_name_desc 86400
(integer) 1

46. Data in RDBMS
id first_name last_name login
1 Ryan Briones ryanbriones
... ... ... ...
id title body permalink user_id
10 Redis Rocks ... redis-rocks 1
... ... ... ... ...

47. Data in Redis
SET posts:10:title “Redis Rocks”
OK
SET posts:10:body “Lorem ipsum..”
OK
SET posts:10:permalink “redis-rocks”
OK
SET posts:10:user_id 1
OK
SET posts:permalink:redis-rocks:id 10
OK
SADD posts:all 10
OK

48. Data in Redis
SET posts:10:title “Redis Rocks”
OK
SET posts:10:body “Lorem ipsum..”
OK
SET posts:10:permalink “redis-rocks”
OK
SET posts:10:user_id 1
OK
SET posts:permalink:redis-rocks:id 10
OK
SADD posts:all 10
OK
LPUSH users:1:posts 10
OK

49. Data in Redis
SET posts:10:title “Redis Rocks”
OK
SET posts:10:body “Lorem ipsum..”
OK
SET posts:10:permalink “redis-rocks”
OK
SET posts:10:user_id 1
OK
SET posts:permalink:redis-rocks:id 10
OK
SADD posts:all 10
OK
ZADD users:1:posts 1307463108973.28 10
OK

50. Data in Redis
SORT user:1:posts DESC
GET posts:*:title
GET posts:*:permalink
1) “Redis Rocks”
2) redis-rocks

51. Sharding
AOF Disk Persistence
Cluster/DR
Lua Scripting
Pub-Sub Replication
Simple Transactions

52. Ryan Briones
@ryanbriones
work for
//obtiva