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You want to send multiple messages to Kafka and ensure all are delivered before your program exits. Which sequence of calls is correct using confluent-kafka producer in Python?

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Kafka - with Java/Python

You want to send multiple messages to Kafka and ensure all are delivered before your program exits. Which sequence of calls is correct using confluent-kafka producer in Python?

ACall <code>produce()</code> for each message, then call <code>flush()</code> once at the end

BCall <code>flush()</code> after each <code>produce()</code> call

CCall <code>flush()</code> before any <code>produce()</code> calls

DCall <code>produce()</code> once, then call <code>flush()</code> multiple times

Step-by-Step Solution

Solution:

Step 1: Understand message sending behavior
produce() queues messages asynchronously. Calling it multiple times queues multiple messages.
Step 2: Use flush() to wait for delivery
Calling flush() once after all produce() calls waits for all messages to be sent before program exit.
Final Answer:
Call produce() for each message, then call flush() once at the end -> Option A
Quick Check:
Produce many, flush once after all [OK]

Quick Trick: Flush once after all produce calls to wait [OK]

Common Mistakes:

MISTAKES

Flushing after every produce (slow)
Flushing before producing messages
Not flushing at all causing lost messages

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