import pymysql
# from DBUtils.PooledDB import PooledDB
from dbutils.pooled_db import PooledDB
POOL = PooledDB(
creator=pymysql, # 使用链接数据库的模块
maxconnections=500, # 连接池允许的最大连接数,0和None表示不限制连接数
mincached=5, # 初始化时,链接池中至少创建的链接,0表示不创建
blocking=True, # 连接池中如果没有可用连接后,是否阻塞等待。True,等待;False,不等待然后报错
ping=0, # ping MySQL服务端,检查是否服务可用。# 如:0 = None = never, 1 = default = whenever it is requested, 2 = when a cursor is created, 4 = when a query is executed, 7 = always
host='home.vimll.com',
port=xxxxx,
user='python',
password='xxxxxx',
database='test',
charset='utf8'
)
# 去连接池中获取一个连接
conn = POOL.connection()
cursor = conn.cursor()
cursor.execute('select * from `order`')
result = cursor.fetchall()
cursor.close()
# 将连接放会到连接池
conn.close()
print(result)