The Beauty of Simplicity

Mastering Database Design with

What is this talk about?

ChicagoDBhttp://chicagodb.com

1 2 3

1 2 3Basic Redis API

1 2 3Simple Use Cases

1 2 3Learning from Redis

SET the-answer 42OK

GET the-answer“42”

The End

42 24

http://redis.io

ListsRPUSH primes 2(integer) 1RPUSH primes 3(integer) 2RPUSH primes 5(integer) 3

Lists

LRANGE primes 0 -11) “2”2) “3”3) “5”

SetsSADD words foo(integer) 1SADD words bar(integer) 1SADD words foo(integer) 0

Sets

SMEMBERS words1) “foo”2) “bar”

Sorted SetsZINCRBY words 1 foo“1”ZINCRBY words 1 bar“1”ZINCRBY words 1 foo“2”

Sorted Sets

ZREVRANGE words 0 -1 WITHSCORES1) “foo”2) “2”3) “bar”4) “1”

Hashes

HSET person first_name Ryan(integer) 1HSET person last_name Briones(integer) 1

Hashes

HGETALL person1) “first_name”2) “Ryan”3) “last_name”4) “Briones”

QueuesRPUSH queue foo(integer) 1RPUSH queue bar(integer) 2

LPOP queue“1”

Set IntersectionSADD fb_friends 1234567(integer) 1SADD fb_friends 1234568(integer) 1SADD purchasers 1234567(integer) 1

SINTER fb_friends purchasers1) 1234567

Chat ServerZADD room 1307420357571.96 {:msg => “Hello Mike”}

(integer) 1ZADD room 1307420462678.8{:msg => “Hello Joe”}

(integer) 1ZADD room 1307420496256.58{:msg => “Hello World”}

(integer) 1

Chat Server

ZREVRANGE room 0 301) {...}2) {...}

ZRANGEBYSCORE room1307420357571.96 +inf

1) {...}

Application Data in Redis

Data in RDBMS

id first_name last_name login1 Ryan Briones ryanbriones

... ... ... ...

Data in Redis

INCR users:uids“1”

id first_name last_name login1 Ryan Briones ryanbriones

... ... ... ...

Data in RDBMS

INCR users:uids“1”

SET users:1:first_name RyanOK

SET users:1:last_name BrionesOK

SET users:1:login ryanbrionesOK

Data in Redis

id first_name last_name login1 Ryan Briones ryanbriones

... ... ... ...

Data in RDBMS

KEYS users:1:*1) users:1:first_name2) users:1:last_name3) users:1:login

GET users:1:first_name“Ryan”

GET users:1:last_name“Briones”

GET users:1:login“ryanbriones”

Data in Redis

SELECT * FROM users;

Data in RDBMS

SADD users:all 1(integer) 1

SMEMBERS users:all1) 12) ...

Data in Redis

users:uids 1users:1:first_name Ryanusers:1:last_name Briones

users:1:login ryanbrionesusers:all {1}

Data in Redis

SET users:login:ryanbriones:uid 1OK

GET users:login:ryanbriones:uid“1”

Data in Redis

SELECT * FROM users ORDER BY last_name DESC;

Data in RDBMS

users:uids 1users:1:first_name Ryanusers:1:last_name Briones

users:1:login ryanbrionesusers:all {1}

users:login:ryanbriones:uid 1

Data in Redis

SET users:last_name:Briones:uid 100OK

SADD users_last_names BrionesOK

SET users:last_name:Andrews:uid 200OK

SADD users_last_names AndrewsOK

SORT users_last_names ALPHA DESC BY * GET users:last_name:*:uid

1) 1002) 200

Data in Redis1

2

Data in RedisSORT users_last_names ALPHA DESC BY * GET users:last_name:*:uidSTORE users_uid_by_last_name_desc

(integer) 2

TYPE users_uid_by_last_name_desclist

LRANGE users_uid_by_last_name_desc 0 -11) 2002) 100

EXPIRE users_uid_by_last_name_desc 86400(integer) 1

Data in Redis

Data in RDBMS

id first_name last_name login1 Ryan Briones ryanbriones

... ... ... ...

id title body permalink user_id10 Redis Rocks ... redis-rocks 1

... ... ... ... ...

SET posts:10:title “Redis Rocks”OKSET posts:10:body “Lorem ipsum..”OKSET posts:10:permalink “redis-rocks”OK

SET posts:10:user_id 1OKSET posts:permalink:redis-rocks:id 10OKSADD posts:all 10OK

Data in Redis

SET posts:10:title “Redis Rocks”OKSET posts:10:body “Lorem ipsum..”OKSET posts:10:permalink “redis-rocks”OK

SET posts:10:user_id 1OKSET posts:permalink:redis-rocks:id 10OKSADD posts:all 10OK

LPUSH users:1:posts 10OK

Data in Redis

SET posts:10:title “Redis Rocks”OKSET posts:10:body “Lorem ipsum..”OKSET posts:10:permalink “redis-rocks”OK

SET posts:10:user_id 1OKSET posts:permalink:redis-rocks:id 10OKSADD posts:all 10OK

ZADD users:1:posts 1307463108973.28 10OK

Data in Redis

Data in Redis

SORT user:1:posts DESCGET posts:*:titleGET posts:*:permalink

1) “Redis Rocks”2) redis-rocks

AOF Disk Persistence

Lua Scripting

Pub-Sub

Simple Transactions

Cluster/DR

Replication

Sharding

Ryan Briones

work for//obtiva

@ryanbriones