Connection Pool

0.0.3 verified Mon Apr 27 auth: no python maintenance

A minimal thread-safe connection pool for Python, providing a generic pool for any reusable connections (e.g., database sockets, HTTP clients). Version 0.0.3 is the latest release as of early 2025; the project appears to be in maintenance mode with no recent updates.

pip install connection-pool

Common errors

error ModuleNotFoundError: No module named 'connection_pool' ↓

cause Using wrong import path (hyphen instead of underscore). The package slug is 'connection-pool' but import uses underscore.

fix

Install with pip install connection-pool and import as from connection_pool import ConnectionPool.

error connection_pool.ConnectionPool object has no attribute 'get_connection' ↓

cause Attempting to use a method that does not exist. The correct API is `pool.acquire()`

fix

Use pool.acquire() to obtain a connection.

Warnings

gotcha The library does not support connection validation or health checks. If a connection is broken after acquisition, the pool does not detect it. ↓

fix Implement your own validation before returning connections to the pool.

gotcha The library uses a simple list-based queue which may not be suitable for high-concurrency scenarios. Performance may degrade under heavy load. ↓

fix Consider using more robust pools like SQLAlchemy's or redis-py's connection pool for production.

gotcha The `acquire()` method will block indefinitely if the pool is exhausted and no timeout is set. This can cause deadlocks. ↓

fix Always specify a timeout when acquiring connections: `pool.acquire(timeout=5)`.

Imports

Pool

from connection_pool import ConnectionPool

Quickstart

Basic usage of ConnectionPool with context manager.

from connection_pool import ConnectionPool

# Create a pool with a factory function for connections
pool = ConnectionPool(
    max_size=5,
    create=lambda: {'conn': 'example'},
    close=lambda conn: None
)

# Acquire a connection
with pool.acquire() as conn:
    # Use the connection
    print(conn)
    pass

# Connections are returned automatically