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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 Implement a Tumbling Window Counter in Python

Count events that fall within a fixed-size sliding time window using a deque and pruning logic.

streaming window aggregation
Python 
from collections import deque
import time


class TumblingWindowCounter:
    def __init__(self, window_size_seconds):
        self.window_size = window_size_seconds
        self.window = deque()

    def add_event(self, timestamp):
        self.window.append(timestamp)

    def count(self, current_time):
        while…
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