observability-error-handling-an-assertion-failure-in-cache-py-e-g-assert-mm-ite-55d4ab66

THEN Add explicit exception handling and logging in the input thread loop to catch assertion errors and other failures. Ensure that unexpected thread termination is reported and that the system can either recover or gracefully shut down to avoid hanging.

try:
    assert mm_item is not None, f"Expected cached item for {mm_hash}"
except AssertionError as e:
    logger.error("Cache lookup failed: %s", e)
    # Optionally restart thread or signal shutdown