KIP-91 — Provide Intuitive User Timeouts in The Producer

Accepted Kafka 1.1 Producer

Introduces delivery.timeout.ms as the single user-visible bound covering the full lifecycle of a produce record—from send() return to callback fire—replacing the confusing interaction between request.timeout.ms and linger.ms. Eliminates the previous non-intuitive behavior where record expiry was anchored to batch readiness rather than the call to send().

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