Redis学习笔记3--Redis键值设计

id

name

author

1

The Ruby Programming Language

Mark Pilgrim

2

Ruby on rail

David Flanagan

3

Programming Erlang

Joe Armstrong

tag_name

book_id

ruby

1

ruby

2

web

2

erlang

3

redis 127.0.0.1:6379> incr book_id #用book_id这个key保存book表的id,每次要获得一个新的

                                          #book_id用incr命令自增取得

(integer) 1

#incr命令返回1,则用key为book:1的hash来保存一个book对象,对象属性为hash的field

redis 127.0.0.1:6379> hset book:1 name "The Ruby Programming Language"

(integer) 1

redis 127.0.0.1:6379> hset book:1 author "Mark Pilgrim"

(integer) 1

redis 127.0.0.1:6379> hgetall book:1 #用hgetall命令测试一个,返回hash的所有属性和值

1) "name"

2) "The Ruby Programming Language"

3) "author"

4) "Mark Pilgrim"

redis 127.0.0.1:6379> incr book_id #创建第2个book对象,先incr一个book_id获得新book的id

(integer) 2

redis 127.0.0.1:6379> hset book:2 name "Ruby on rail"

(integer) 1

redis 127.0.0.1:6379> hset book:2 author "David Flanagan"

(integer) 1

redis 127.0.0.1:6379> hgetall book:2

1) "name"

2) "Ruby on rail"

3) "author"

4) "David Flanagan"

redis 127.0.0.1:6379> incr book_id

(integer) 3

redis 127.0.0.1:6379> hset book:3 name "Programming Erlang"

(integer) 1

redis 127.0.0.1:6379> hset book:3 author "Joe Armstrong"

(integer) 1

redis 127.0.0.1:6379> hgetall book:3

1) "name"

2) "Programming Erlang"

3) "author"

4) "Joe Armstrong"

redis 127.0.0.1:6379> sadd tag:ruby 1

(integer) 1

redis 127.0.0.1:6379> sadd tag:ruby 2

(integer) 1

redis 127.0.0.1:6379> sadd tag:web 2

(integer) 1

redis 127.0.0.1:6379> sadd tag:erlang 3

(integer) 1

redis 127.0.0.1:6379> sinter tag:ruby tag:web

1) "2"

redis 127.0.0.1:6379> sdiff tag:ruby tag:web

1) "1"

redis 127.0.0.1:6379> sunion tag:ruby tag:web

1) "1"

2) "2"