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A/B testing & experimentation

User bucketing, experiment metrics, statistical comparison, and rollout guardrails.

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A/B testing & experimentation medium

How to Mock Mutual Exclusion for A/B Experiment Groups in Python

Simulate mutual exclusion for experiment groups using a thread-safe lock, ensuring only one member updates the shared counter at a time.

threading mutual-exclusion ab-testing
Python 
import threading
import time
import random


class CountingGate:
    """A mock mutual exclusion gate using a lock."""
    def __init__(self):
        self.counter = 0
        self.lock = threading.Lock()

    def enter(self, group_id, member_id):
        with self.lock:
            current = self.counter
            t…
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