What are Kafka messages and how do they work?
Kafka messages are the fundamental units of communication in Apache Kafka. They are records that consist of a key, a value, and metadata such as timestamps.
Can you explain the structure of a Kafka message?
Sure! A Kafka message typically includes a key (optional), a value (the actual data), and headers (optional metadata). The key is used for partitioning.
How are messages stored in Kafka?
Messages in Kafka are stored in topics, which are divided into partitions. Each partition is an ordered, immutable sequence of messages.
What happens if a consumer fails to read a message?
If a consumer fails to read a message, Kafka retains the message for a configurable retention period, allowing the consumer to read it later.
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