Reference library

Production deployment patterns

Graceful shutdown, prod config, rollouts, readiness probes, and ship-with-confidence checks.

3 matches

Auto Rollback on Error Rate Exceeded in Python

Simulate a service that monitors a rolling window of request errors and automatically rolls back when the error rate exceeds a threshold.

error-rate rollback rolling-window

Python

import random
import time


def simulate_requests(total_requests=1000, rollback_threshold=0.2):
    """
    Simulate a service that automatically rolls back when the error rate
    exceeds a threshold within a rolling window.
    """
    window_size = 100
    errors_seen = []
    rolled_back = False

    for req_num i…

16 0 Open

Production deployment patterns medium

Automate Semantic Versioning with Conventional Commits in Python

Automatically bump a semantic version based on conventional commit messages (feat, fix, BREAKING CHANGE) and write the new version to a file.

semantic-versioning conventional-commits automation

Python

import re
from pathlib import Path


def get_next_version(current: str, commit_messages: list[str]) -> str:
    """Return the next semantic version based on conventional commit messages."""
    major, minor, patch = map(int, current.split("."))
    if any(msg.startswith("BREAKING CHANGE") for msg in commit_messages):
…

15 0 Open

Production deployment patterns medium

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.

connection-pool sockets threading

Python

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…

13 0 Open

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