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How to Implement Hedged Requests in Python

This code demonstrates a hedged request pattern using threading, which sends duplicate calls and returns the first result that arrives within a timeout.

hedged-requests threading timeout

Python

import time
from unittest.mock import Mock

def hedged_request(call, timeout=0.05):
    """Execute two duplicate calls, return first result within timeout."""
    result_container = {}

    def run_and_store():
        result_container['result'] = call()
        result_container['done'] = True

    # Simulate slow cal…

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