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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 deduplicate messages by ID in Python

Track seen message IDs in a set to skip duplicate messages and store unique content in a dict, with exact output showing which messages were added or skipped.

deduplication set messaging
Python 
import time

class MessageStore:
    def __init__(self):
        self.seen_ids = set()
        self.messages = {}
    
    def add(self, message_id, content, timestamp=None):
        timestamp = timestamp or time.time()
        if message_id in self.seen_ids:
            return False
        self.seen_ids.add(message_…
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