tech calculator
Kafka Partitioning & Consumer Throughput Planner
Determine minimum partition count, consumer group scaling sizes, and storage footprints based on message throughput.
Inputs
Incoming Message Ingest
Consumer Execution
Replication Factor
Results
Minimum Partitions Required
250
Consumer Capacity (Per Thread)
100 msgs/s
Formula
Kafka Partitioning formula
Partitions = max( Ingress_MBps / Partition_Limit_MBps, Msg_Rate / Consumer_Thread_Rate )Ensures topic partitions offer enough write lanes and read slots to sustain replication and consumption without lag.
Step by step
How the calculation works
- 1Enter the topic incoming production rate (messages per second).
- 2Specify the average message size (KB) and consumer processing time per message (ms).
- 3Select the topic replication factor (typically 3 for production high availability).
- 4Adjust the broker network write throughput limit per partition (defaults to 10 MB/s).
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