# Consumer Group

> Source: https://sukruyusufkaya.com/en/glossary/consumer-group
> Updated: 2026-05-13T21:26:47.506Z
> Type: glossary
> Category: veri-muhendisligi-ve-ai-altyapisi
**TLDR:** A group of consumer instances that read from the same stream in a balanced and parallel way.

<p>The consumer group structure is central to scalable consumption in stream systems. Data from the same topic or stream is distributed across multiple consumers to increase throughput. However, partition count, rebalancing behavior, and failure scenarios all affect performance. In high-volume event systems, consumer group design directly influences system efficiency.</p>