Topic Settings

You can view and modify the settings of the current topic. Each topic setting has a default value, which can be overridden per topic.

By turning on the Description On/Off toggle at the top of the page, you can view the detailed descriptions for each topic setting. Use these descriptions as reference to modify your topic settings.

Basic Settings

These are the basic settings configuring a topic. To change the Topic Name, you will need to delete and recreate the topic.

Frequently Used Settings

We have compiled the commonly used configurations for creating a topic.

Estimating Topic Size. A tool is provided to easily calculate the estimated size of the topic after its settings are changed. This allows you to check in advance the impact of the altered topic settings. 

Advanced Mode

Replication

In the Replication Section, you can view and modify the replication settings of a topic. Replication settings are crucial for preventing data loss and ensuring data stability.

Manage Disk

Manage Disk Section includes settings for managing the retention and deletion methods of log data in Kafka. Manage Disk settings are important for optimizing Kafka's storage usage, and efficiently processing old data.

Clean-up Policy: compact Option

In Manage Disk Section > Clean-up policy settings, the additional settings applied when selecting the 'compact' option, control the detailed behavior of the log segment compaction process. Message Compaction removes duplicate key messages from the messages containing key-value pair data, and retains only the latest message for each key, thereby using disk space more efficiently. This is particularly useful for applications that store status information (such as user sessions, event progress, etc.) and contributes to more efficient data retention and improved query performance.

Message

Message Section includes detailed settings related to message processing.

Flush

Flush Section determines how frequently messages will be written to disk.

What is a Flush?
A flush refers to the process of writing messages to the disk. Kafka first writes messages to memory, and then after a certain amount of time or a certain number of messages have accumulated, it writes the messages to the disk.

Segment

Segment Section deals with settings closely related to Kafka's data storage methods. Kafka stores data in file units called log segments, which make up the partitions of a topic. By configuring segment settings, you can adjust Kafka's storage efficiency, data access speed, and overall system performance. This section includes key settings such as segment creation, rolling, deletion, and indexing.

Others