Redisの5つの基本データ型と特殊データ型の使い方
5510 ワード
親測定有効#後はメソッドコメント
Redis-Keyタイプ
Stringタイプ
Listタイプ:すべてのlistコマンドはlで始まる
Setタイプsadd myset hello#setセットにデータを追加
Redis-Keyタイプ
keys * # key
set name linailong #set key
keys *
:name
set age 1
keys *
:"age" "name"
exists name # key
: 1 1
expire name 10 # key
ttl name # key
type name # key
Stringタイプ
set key1 v1 #
get key1 #
exists key1 # key
append key1"hello" # , key , set key
strlen key1 #
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i++
i+=
set views 0 # 0
incr views # 1 1
decr views # 1 1
incrby views 10 # , , 10
decrby views 3 # 3, 3
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range
set key1 "hello,linailong" # key1
getrange key1 0 3 # [0,3]
:hell
getrange key1 0 -1 #
:hello,linailong
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set key2 abcdefg
setrange key2 1 xx #
:axxdefg
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setex(set with expire) #
setnx(set if not exist) #key ( )
setex key3 30 "hello" # key3 hello 30
setnx mykey "redis" # mykey mykey
setnx mykey "MongoDB" # mykey ,
get mykey # redis MongoDB
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mset
mget
mset k1 v1 k2 v2 k3 v3 #
keys *
k1 k2 k3
mget k1 k2 k3 #
:v1 v2 v3
msetnx k1 v1 k4 v4 #msetnx ,
get k4
:(nil)
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set user:1{name:zhangsan,age:3} # user:1 json
# key user:{id}:{filed}, redis
mset user:1:name zhangsan user:1:age 2
mset user:1:name user:1:age
:zhangsan 2
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getset # get set
getset db redis # , (nil)
get db
:redis
getset db mongodb # ,
:redis
get db
:"mongodb "
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:
String :value
1,
2,
3,
4,
Listタイプ:すべてのlistコマンドはlで始まる
LPUSH list one # , ( )
LPUSH list two
LPUSH list three
lrange list 0 -1 # list
:three,two,one
lrange list 0 1 #
:three,two
Rpush list right # , ( )
Lrange list 0 -1
:three,two,one,right
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LPOP
RPOP
lpop list # list
: three
rpop list # list
:right
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llen #
llen list #
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lrem #
lrem list 1 one # list value
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rpoplpush # ,
rpush mylist hello
rpush mylist hello1
rpush mylist hello2
rpoplpush mylist myotherlist # ,
lrange mylist 0 -1
:hello,hello1
lrange myotherlist 0 -1
hello2
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lset # ,
lpush list value1
lrange list 0 0
:value1
lset list 0 item
lrange list 0 0
:item
# , ERR index out of range
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:
1,list ,
2, key ,
3, key ,
4, , ,
5, , ! ,
Setタイプsadd myset hello#setセットにデータを追加
smembers myset # set
sismember myset hello # set
scard myset # set
srem myset hello # set
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set ,
srandmember myset #
srandmember myset #