Production deployment patterns
Graceful shutdown, prod config, rollouts, readiness probes, and ship-with-confidence checks.
How to Drain a Connection Pool Before Exit in Python
Gracefully close all pooled sockets using a thread-safe ConnectionPool that drains connections before program exit.
import socket
import threading
import time
import random
class ConnectionPool:
def __init__(self, size=5):
self.pool = []
self.lock = threading.Lock()
self.closed = False
for _ in range(size):
self.pool.append(self.create_connection())
def create_connection(sel…How to Smoke Test a Deployment in Python with unittest.mock
Run a post-deploy smoke test by mocking the deployment status check to verify your health-check logic returns PASS/FAIL.
import unittest
from unittest.mock import Mock, patch
class DeploymentService:
def check_status(self):
return "unknown"
def smoke_test_deploy():
service = DeploymentService()
with patch.object(service, "check_status", return_value="healthy") as mock_check:
status = service.check_status()
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Production deployment patterns — Python code examples
What you will find here
This page collects production deployment patterns snippets — short, copy-ready Python you can paste into our free online IDE and run without installing anything. Each sample includes a plain-English explanation and the full source code.
Samples vs tutorials and challenges
Samples are quick reference — one concept per page. For step-by-step teaching, use our Python tutorials. To test yourself, try quizzes or coding challenges. Clean up style with the Python formatter.