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Streaming & messaging

Kafka-style pub/sub, event consumers, async pipelines, and message-driven workflows.

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Streaming & messaging easy

How to Mock Kafka Topic Partitions with a Python dict of lists

Mocks a Kafka topic and its partitions using a defaultdict of lists to simulate message production, consumption, and per-partition counts.

kafka mock partitions
Python 
from collections import defaultdict

class KafkaTopicPartitionMock:
    """A simple mock for Kafka topic-partition assignment using dict of lists."""

    def __init__(self, topic):
        self.topic = topic
        self.partitions = defaultdict(list)  # partition_id -> list of messages

    def produce(self, message…
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