Python MySQL连接池
PyMySQLPool
PyMySQLPool is a pymysql-based database connection pool, simple and lightweight.
Table of content
Package is uploaded on PyPI
You can install with pip
$ pip install pymysql-pooling
Example
Make use of a simple table (Example in MySQL doc)
mysql> CREATE TABLE pet (name VARCHAR(20), owner VARCHAR(20), -> species VARCHAR(20), sex CHAR(1), birth DATE, death DATE);mysql> INSERT INTO pet -> VALUES ("Puffball", "Diane", "hamster", "f", "1999-03-30", NULL);
frompymysqlpool.poolimportPoolpool=Pool(host=HOST,port=PORT,user=USER,password=PASSWORD,db=DB)pool.init()connection=pool.get_conn()cur=connection.cursor()cur.execute('SELECT * FROM `pet` WHERE `name`=%s',args=("Puffball",))print(cur.fetchone())pool.release(connection)
This example will print:
('Puffball', 'Diane', 'hamster', 'f', datetime.date(1999, 3, 30), None)
Support autocommit mode, as following:
pool=Pool(host=HOST,port=PORT,user=USER,password=PASSWORD,db=DB,autocommit=True)
That's all.
Features
Maintain a minimum number of connection pools by default.
If a number of unuse connections less than zero, dynamically add connections to pool until the current number of inuse connections equal maximum of the pool.
Release the idle connections in regular until a number of unuse connections equal minimum of the pool.
Support auto-commit mode.
Support for ping check to get healthy connections.
Requirements
Python
CPython : >= 3.4
MySQL Server -- one of the following:
MySQL >= 5.5
MariaDB >= 5.5
PyMySQL: >= 0.9.2
Installation
Package is uploaded on PyPI
You can install with pip
$ pip install pymysql-pooling
Example
Make use of a simple table (Example in MySQL doc)
mysql> CREATE TABLE pet (name VARCHAR(20), owner VARCHAR(20), -> species VARCHAR(20), sex CHAR(1), birth DATE, death DATE);mysql> INSERT INTO pet -> VALUES ("Puffball", "Diane", "hamster", "f", "1999-03-30", NULL);
frompymysqlpool.poolimportPoolpool=Pool(host=HOST,port=PORT,user=USER,password=PASSWORD,db=DB)pool.init()connection=pool.get_conn()cur=connection.cursor()cur.execute('SELECT * FROM `pet` WHERE `name`=%s',args=("Puffball",))print(cur.fetchone())pool.release(connection)
This example will print:
('Puffball', 'Diane', 'hamster', 'f', datetime.date(1999, 3, 30), None)
Support autocommit mode, as following:
pool=Pool(host=HOST,port=PORT,user=USER,password=PASSWORD,db=DB,autocommit=True)
That's all.
Roadmap
Connection Pool
Dynamically Create
Dynamically Release
Monitor Web Interface
Resources
License
PyMySQLPool is released under the MIT License. See LICENSE for more information.
Contributing
Thank you for your interest in the contribution of PyMySQLPool, your help and contribution is very valuable.
You can submit an issue and pull requests, please submit an issue before submitting pull requests.
