Reference library

Reliability & rate limiting

Retries, exponential backoff, circuit breakers, token buckets, and idempotent handlers.

3 matches

How to Implement Graceful Degradation with Feature Disabling in Python

A pattern that disables enhanced features and falls back to basic functionality when a dependency fails, with mock-based testing.

graceful-degradation feature-flags resilience

Python

import random
from unittest.mock import patch


class EnhancedFeature:
    """A feature that can gracefully degrade when a dependency is unavailable."""

    def __init__(self):
        self.feature_enabled = True

    def get_enhanced_data(self):
        """Simulate an enhanced feature that depends on external data."…

12 0 Open

Reliability & rate limiting medium

Implement a Circuit Breaker Pattern in Python

This code implements a simple circuit breaker that opens after a threshold of consecutive failures, causing subsequent calls to fail fast without invoking the underlying function.

circuit-breaker reliability resilience

Python

class CircuitBreaker:
    def __init__(self, failure_threshold=3):
        self.failure_threshold = failure_threshold
        self.failure_count = 0
        self.open = False

    def call(self, func, *args, **kwargs):
        if self.open:
            raise RuntimeError("Circuit is open - failing fast")
        try:
…

15 0 Open

Reliability & rate limiting medium

Retry with Exponential Backoff and Jitter in Python

A decorator-style retry wrapper that retries a flaky function with exponential backoff plus random jitter, then raises after the last attempt fails.

retry backoff jitter

Python

import random
import time

def retry_with_backoff(func, max_retries=3, base_delay=0.5, max_jitter=0.1):
    for attempt in range(max_retries + 1):
        try:
            return func()
        except Exception as e:
            if attempt == max_retries:
                raise
            delay = base_delay * (2 ** at…

14 0 Open

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