A Kafka producer is configured with batch.size=16384 and linger.ms=100, but throughput is still low. What is a likely misconfiguration?

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Kafka - Performance Tuning

A Kafka producer is configured with batch.size=16384 and linger.ms=100, but throughput is still low. What is a likely misconfiguration?

Abuffer.memory is too small, limiting batch buffering

Backs is set to 1, causing too many retries

Ccompression.type is set to snappy, which slows down producer

Dmax.in.flight.requests.per.connection is set to 10, causing blocking

Step-by-Step Solution

Solution:

Step 1: Understand buffer.memory role
buffer.memory limits total memory for buffering messages before sending; too small value restricts batch building.
Step 2: Evaluate other options
acks=1 is normal, snappy compression is fast, and max.in.flight.requests.per.connection=10 usually improves throughput.
Final Answer:
buffer.memory is too small, limiting batch buffering -> Option A
Quick Check:
buffer.memory limits batch buffering [OK]

Quick Trick: buffer.memory must be large enough for batches [OK]

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