Reference library

Reliability & rate limiting

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

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Reliability & rate limiting medium

Mock Distributed Rate Limiter with Dict in Python

Simulates a distributed token-bucket rate limiter with a thread-safe dict, useful for testing before moving to Redis.

rate-limiting token-bucket threading
Python 
import time
import threading
from collections import defaultdict


class DistributedRateLimiter:
    """
    A mock distributed rate limiter using a dict with thread-safe access.
    Implements a token bucket algorithm per user.
    """

    def __init__(self, rate_per_second=5, burst_capacity=10):
        self.rate_p…
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