使用Python如何操作Redis呢？下面用實例來說明用Python讀寫Redis數據庫。

比如，我們插入一條數據，如下：

import redis

class Database:

def __init__(self):

self.host = 'localhost'

self.port = 6379

def write(self,website,city,year,month,day,deal_number):

try:

key = '_'.join([website,city,str(year),str(month),str(day)])

val = deal_number

r = redis.StrictRedis(host=self.host,port=self.port)

r.set(key,val)

except Exception, exception:

print exception

def read(self,website,city,year,month,day):

try:

key = '_'.join([website,city,str(year),str(month),str(day)])

r = redis.StrictRedis(host=self.host,port=self.port)

value = r.get(key)

print value

return value

except Exception, exception:

print exception

if __name__ == '__main__':

db = Database()

db.write('meituan','beijing',2013,9,1,8000)

db.read('meituan','beijing',2013,9,1)

上面操作是先寫入一條數據，然后再讀取，如果寫入或者讀取數據太多，那么我們最好用批處理，這樣效率會更高。

import redis

import datetime

class Database:

def __init__(self):

self.host = 'localhost'

self.port = 6379

self.write_pool = {}

def add_write(self,website,city,year,month,day,deal_number):

key = '_'.join([website,city,str(year),str(month),str(day)])

val = deal_number

self.write_pool[key] = val

def batch_write(self):

try:

r = redis.StrictRedis(host=self.host,port=self.port)

r.mset(self.write_pool)

except Exception, exception:

print exception

def add_data():

beg = datetime.datetime.now()

db = Database()

for i in range(1,10000):

db.add_write('meituan','beijing',2013,i,1,i)

db.batch_write()

end = datetime.datetime.now()

print end-beg

if __name__ == '__main__':

add_data()

總結

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