Term Kind Topic What it is
Consumer Group concept Event Streaming A set of consumers that cooperatively read one stream, with each partition assigned to exactly one member, so the group collectively processes every message once.
Log Compaction concept Event Streaming A retention policy that keeps only the most recent value for each key rather than deleting by age, so the log becomes a durable snapshot of current state.
Offset Management concept Event Streaming How a consumer records its position in a stream, and the decision that determines whether processing is at-least-once or at-most-once.