What is the default value of fetch.min.bytes?

What is the default value of fetch.min.bytes?

• A. 1
• B. 0
• C. 100
• D. 1024

Answer: (A)

Fetch.min.bytes sets the minimum amount of data the broker will return for a fetch request. With the default of 1, the broker delivers data as soon as any records are available, which minimizes latency for consumers. If you raise this value, the broker waits for enough data to accumulate to meet that threshold (or until fetch.max.wait.ms expires), potentially increasing throughput but also increasing latency for each fetch. So the default value is 1 because it prioritizes low latency by returning data as soon as it’s available. Values like 100 or 1024 would yield larger, less frequent batches, while a higher threshold means longer waits for data to accumulate.

Fetch.min.bytes sets the minimum amount of data the broker will return for a fetch request. With the default of 1, the broker delivers data as soon as any records are available, which minimizes latency for consumers. If you raise this value, the broker waits for enough data to accumulate to meet that threshold (or until fetch.max.wait.ms expires), potentially increasing throughput but also increasing latency for each fetch. So the default value is 1 because it prioritizes low latency by returning data as soon as it’s available. Values like 100 or 1024 would yield larger, less frequent batches, while a higher threshold means longer waits for data to accumulate.