Kafka is an open-source distributed event and stream-processing platform built to process demanding real-time data feeds. It is inherently scalable, with high throughput and availability.
You can resize existing Kafka clusters at any time to add more CPUs, RAM, and storage.
To resize a Kafka database cluster, click the name of the cluster in the control panel to go to its Overview page, then click the Settings tab.
In the Cluster configuration section, click the Edit button. Select the your configuration from the dropdown menu.
Once you have selected your new configuration, click Save to provision the new configuration. The provisioning takes several minutes but the total time depends on the size of the cluster.
Your cluster’s state changes from Active to Resizing until the process is done. You can expect no downtime and do not need to take action.