Consumers

Kafka Architecture: Consumers - 2025 Edition

🚀 What’s New in This 2025 Update

Major Updates and Changes

• KIP-848 Protocol - Revolutionary consumer rebalancing without global pauses
• Elimination of Rebalance Downtime - Consumers continue processing during rebalances
• Queue Semantics - Native point-to-point messaging (early access)
• KRaft-Based Coordination - Simplified group management without ZooKeeper
• Metadata Rebootstrap - Automatic recovery from metadata failures
• Enhanced Scalability - Support for larger consumer groups

Deprecated Features

• ❌ ZooKeeper-based coordination - Completely removed
• ❌ Legacy rebalance protocols - Replaced by KIP-848
• ❌ Pre-2.1 client protocols - No longer supported
• ❌ Old consumer group management tools - Updated for KRaft

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Kafka Architecture: Consumers

Kafka Consumer Architecture - Consumer Groups and subscriptions

This article covers some lower level details of Kafka consumer architecture. It is a continuation of the Kafka Architecture, Kafka Topic Architecture, and Kafka Producer Architecture articles.

This article covers Kafka Consumer Architecture with a discussion consumer groups and how record processing is shared among a consumer group as well as failover for Kafka consumers.

Cloudurable provides Kafka training, Kafka consulting, Kafka support and helps setting up Kafka clusters in AWS.

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