Kafka Streams Cost Calculator

Analyze the costs of running Kafka Streams applications and discover potential optimizations

Instance Configuration

Select your instance type and enter your deployment details
InstancevCPUsMemoryAWS TypeCost per hour
large28m5.large0.1
xlarge416m5.xlarge0.19
2xlarge832m5.2xlarge0.38
4xlarge1664m5.4xlarge0.77
Number of Instances
Number of Standby Replicas

Application Details

Enter your Kafka Streams application throughput and storage details
Average Throughput (KB/s)
Peak Throughput (KB/s)
Changelog Size (GB)
Number of Partitions
Monthly Restores

Pricing Variables

Cloud provider pricing information and other variables
Storage Cost (GB/mo)
?
Cost per Partition/hour
?
Standby Compute %
?
Rocks Memory %
?
Rocks CPU %
?
Kafka In/Egress (/GB)
?
Kafka Storage (GB/hour)
?

Total Monthly Cost

Include Kafka Costs
?
$452.52
The total monthly cost of your deployment (excluding Kafka costs)

Active Processing

$39.30
The active processing cost is the cost of the instances running at the average throughput, adjusted for RocksDB compute costs.

We estimate the amount of resources required for active processing by dividing the average throughput by the peak throughput.

Overprovisioning

$78.60
The overprovisioning cost is the cost of the provisioned resources that are not used during active processing, adjusted for RocksDB compute costs.

We estimate the amount of overprovisioning by dividing the average throughput by the peak throughput.

Standbys

$63.51
The standby cost includes both the standby compute cost and the standby egress cost, which is the amount of data that it reads from the changelog topic to keep up to date.

The changelog topic throughput is estimated as the average throughput over the month.

Storage

$64.08
The storage cost is calculated as the GP3 cost per GB multiplied by the total storage in GB. The amount of disk space required is estimated to be the same as the changelog size.

RocksDB

$138.70
The RocksDB compute cost is based on the instance cost, CPU percentage, and memory percentage allocated to RocksDB.

Restore

$68.33
The restore cost is calculated using the Kafka egress cost, changelog size, and number of monthly restores.

Kafka Network

$128.12
The cost for Kafka network egress and ingress of topics, not including reads from the changelog topic (which is accounted for in the standby cost).

Kafka Storage

$29.20
The Kafka storage cost is based on the changelog size and the Kafka storage cost per GB per month. (Assuming no storage cost for the input and output topics due to lower retention.)

Kafka Partitions

$52.56
The Kafka partitions cost is based on the number of partitions, assuming equal for the input, output and changelog topics.

Have questions about our calculations, want to challenge our assumptions or just want to stop by and say hi? We are available on Discord and would love to chat.