在網上搜了一下命令，但大部分都處在連接，set,get,pipline的高層階段，所以自己總結一下
（一）Key
- 【連接】：r = redis.Redis(host='localhost',port=6379,db=0)
r = redis.StrictRedis()
pool = redis.ConnectionPool(host='',port=,db=)
r = redis.Redis(connection_pool=pool)
r = redis.Redis(unix_socket_path='')
- pipeline:
r = redis.Redis(...)
pipe = r.pipeline()
pipe.set(...).sadd(...).... .execute()
這個是原子性的，不想原子性則：
pipe = r.pipeline(transactionn=False)
- del:
del命令在這里用delete代替：r.del(key1, key2)
- dump:序列化給定key，並返回序列化的值
r.dump(key)
- restore:反序列化：
r.restore(key,0,'/...')
- exists:某鍵是否存在
r.exists(key)
- expire:為給定key設置生存時間,秒為單位
>>> r.expire("set",30000000)
True
>>> r.ttl("set")
29999993L
- pexpire:同上，毫秒為單位
- expireat:同上，時間參數用UNIX時間戳以秒為單位
>>> r.expireat("set",1355292000000000)
True
>>> r.ttl("set")
1355290610413302L
- pexpireat：
- keys pattern:
r.keys()
>>> r.keys()
['set', 'bbs', 'bing']
>>> r.keys('*s*')
['set', 'bbs']
- flushdb:
r.flushdb()
- move: 將當前數據庫key移動到給定數據庫db中：不存在返回FALSE：兩個數據庫有相同key，move失敗：
>>> r.move("set",1)
True
>>> r1.keys()
['set', 'test', 'bbs', 'age']
>>> r.get("set")
>>> r1.get("set")
"set(['waterwood', 'bbs.byr.cn'])"
>>>
- object?
- persist:移除給定key生存時間：
>>> r.expire("set",100000)
True
>>> r.ttl("set")
99995L
>>>
>>>
>>>
>>> r.get("set")
'another_set'
>>> r.persist("set")
True
>>> r.ttl("set")
>>>
- pttl:以毫秒返回剩余生命時間 key不存在，返回-2，沒有設置剩余時間，返回-1
- randomkey：
- r.randomkey()
- rename:
>>> r.keys()
['set', 'bbs', 'bing']
>>> r.rename("set","sset")
True
>>> r.keys()
['sset', 'bbs', 'bing']
>>> r.rename("lala","ma")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Library/Python/2.7/site-packages/redis/client.py", line 764, in rename
return self.execute_command('RENAME', src, dst)
File "/Library/Python/2.7/site-packages/redis/client.py", line 394, in execute_command
return self.parse_response(connection, command_name, **options)
File "/Library/Python/2.7/site-packages/redis/client.py", line 404, in parse_response
response = connection.read_response()
File "/Library/Python/2.7/site-packages/redis/connection.py", line 316, in read_response
raise response
redis.exceptions.ResponseError: ERR no such key
>>>
試圖rename不存在的key時，產生異常
renamenx:不存在new_key時才rename
- sort:
-
>>> r.lpush("num",80,89,12,-5,32)
5L
>>> r.sort("num")
['-5', '12', '32', '80', '89']反序？ - 源文件中的定義函數為：
def sort ( self , name , start = None , num = None , by = None , get = None ,desc = False , alpha = False , store = None , groups = False ):
-
>>> r.sort("num",desc=True)
['89', '80', '32', '12', '-5'] - 同理字母順序：
-
>>> r.lpush("web","www.baidu.com")
1L
>>> r.lpush("web","www.google.cn")
2L
>>> r.sort("web",alpha=True)
['www.baidu.com', 'www.google.cn']
>>> r.lpush("web","bbs.byr.cn","hello","alibaba")
5L
>>> r.lrange("web",0,-1)
['alibaba', 'hello', 'bbs.byr.cn', 'www.google.cn', 'www.baidu.com']
>>> r.sort("web",alpha=True,desc=True)
['www.google.cn', 'www.baidu.com', 'hello', 'bbs.byr.cn', 'alibaba']
>>> r.lrange("web",0,-1)
['alibaba', 'hello', 'bbs.byr.cn', 'www.google.cn', 'www.baidu.com']
>>> r.sort("web",alpha=True,desc=True,start=2,num=2)
['hello', 'bbs.byr.cn']
>>> r.lrange("web",0,-1)
['alibaba', 'hello', 'bbs.byr.cn', 'www.google.cn', 'www.baidu.com']
>>>
（二）字符串
- append：追加到key末尾：
-
>>> r.append("myphone","Nokia")
5L
>>> r.get("myphone")
'Nokia'
>>> r.append("myphone","iphone")
11L
>>> r.get("myphone")
'Nokiaiphone' -
>>> r.getrange("myphone",2,-1)
'kiaiphone' - bitcount：計算給定字符串中被設置為1的比特位數量，可設start,end參數
- getbit:對 key 所儲存的字符串值,獲取指定偏移量上的位
- getrange:r.getrange(key,start,end)
-
>>> r.bitcount("bits")
0
>>> r.setbit("bits",3,1)
0
>>> r.bitcount("bits")
1
>>> r.setbit("bits",4,0)
0
>>> r.bitcount("bits")
1
>>> r.setbit("bits",5,1)
0
>>> r.bitcount("bits")
2
>>> -
>>>
>>> r.setbit("bit-1",0,1)
0
>>> r.setbit("bit-1",3,1)
0
>>> r.setbit("bit-2",0,1)
0
>>> r.setbit("bit-2",1,1)
0
>>> r.setbit("bit-2",3,1)
0
>>> r.bitop("And","new_bit","bit-1","bit-2")
1L
>>> r.getbit("bit-1")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: getbit() takes exactly 3 arguments (2 given)
>>> r.getbit("bit-1",0)
1
>>> r.getbit("bit-1",1)
0
>>> r.getbit("bit-1",3)
1
>>> r.getbit("bit-2",0)
1
>>> r.getbit("bit-2",1)
1
>>> r.getbit("bit-2",2)
0
>>> r.getbit("bit-2",3)
1
>>> r.getbit("new_bit",0)
1
>>> r.getbit("new_bit",1)
0
>>> r.getbit("new_bit",3)
1
>>>
- decr（key,*）/incr:將 key 中儲存的數字值減/加*。如果 key 不存在,那么 key 的值會先被初始化為 0 ,然后再執行DECR
- getset(key,value)
- mget,mset
- msetnx/setnx
- setex(key,seconds,value)
- setrange(key,offset,value)
-
>>> r.set("greeting","Hello,world")
True
>>> r.setrange("greeting",6,"Wahahaha")
14
>>> r.get("greeting")
'Hello,Wahahaha'
>>> - r.strlen(key)
- substr():
-
>>> r.get('name')
'another_set'
>>> r.substr('name',3)
'ther_set'
>>> r.substr('name',0,3)
'anot'
>>>