1.reids的連線

Redis使用connection pool來管理對一個redis server 的所有連線，避免每次建立，釋放連線的開銷，預設，每個Redis例項都會維護一個自己的連線池。可以直接建立一個連線池，然後作為引數Redis，這樣就可以實現多個Redis例項共享一個連線池。

import redis

try:
    #host is the redis host,the redis server and client are required to open, and the redis default port is 6379
    pool = redis.ConnectionPool(host='10.0.64.113', password = 'xxxxx', port=6379, db=3)
    print("connected success.")
except:
    print("could not connect to redis.")
r = redis.Redis(connection_pool=pool)
 

2.redis的簡單使用

這裡只介紹最基本的用法：將資料推送至redis的方法set，以及從redis取出資料的get。由於python3在redis中取出的資料是b'pythone'，b代指二進位制型別，所以還需要對redis進行相應的資料處理。

import redis
import re
try:
    #host is the redis host,the redis server and client are required to open, and the redis default port is 6379
    pool = redis.ConnectionPool(host='10.0.64.113', password = 'xxxxx', port=6379, db=3)
    print("connected success.")
except:
    print("could not connect to redis.")
r = redis.Redis(connection_pool=pool)

list = '300033,600066'
r.set('stock_codes', list)

list = str(r.get('stock_codes'))
list = re.findall(r"'(.+?)'", list)
list = "".join(list)  #atypical list -> str
list = list.replace(' ','')  #remove all spaces in str
list = list.split(",")  #str -> normal list