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pymysql-based database connection pool

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PyMySQLPool is a pymysql-based database connection pool, simple and lightweight.

Table of content


  • 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.


  • Python
    • CPython : >= 3.4
  • MySQL Server -- one of the following:
    • MySQL >= 5.5
    • MariaDB >= 5.5
  • PyMySQL: >= 0.9.2


Package is uploaded on PyPI

You can install with pip

$ pip install pymysql-pooling


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);
from pymysqlpool.pool import Pool

pool = Pool(host=HOST, port=PORT, user=USER, password=PASSWORD, db=DB)

connection = pool.get_conn()
cur = connection.cursor()
cur.execute('SELECT * FROM `pet` WHERE `name`=%s', args=("Puffball", ))


This example will print:

('Puffball', 'Diane', 'hamster', 'f',, 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.


  • Connection Pool
  • Dynamically Create
  • Dynamically Release
  • Monitor Web Interface



PyMySQLPool is released under the MIT License. See LICENSE for more information.


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.

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