Apache Kafka - Real-time Stream Processing (Master Class) - State Store Fault Tolerance

The video tutorial discusses the volatility and fault tolerance of in-memory and persistent state stores in Kafka Streams. It highlights the need for state relocation in scenarios like machine failure and scaling. Kafka Streams automatically migrates local states using a state store change log, which is backed up to a Kafka topic. The tutorial also covers configuration options for the change log and advises against disabling it due to the loss of fault tolerance and rebalancing capabilities.

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