Redis (I) -- getting started with redis (2) -- redis data type

Redis data type

String - String type
Hash - Hash type
List - List the type
Set - Collection types
Zset - Ordered set type

String String type

String command

Hash Key type

Hash Type is used to store structured data

Hash command

List List the type

List A list is a list of strings “ Array ”, Sort by insertion order .
List The maximum length of the list is 2 Of 32 Power -1, Can contain 40 100 million elements .
List command
rpush listkey c b a - Insert... On the right
lpush listkey f e d - Insert... On the left

rpop listkey - Right pop up

lpop listkey - Pop up on the left

lrange listkey 0 -1 - List listkey All elements from start to end in

Set And Zset Collection types

Set A collection is an unordered collection of strings , Collection members are unique .
Zset A collection is an ordered collection of strings , Collection members are unique .

sinter set1 set2 - intersection
sunion set1 set2 - Combine
sdiff set1 set2 - Difference set