Principle:Fede1024 Rust rdkafka Async Message Production
| Knowledge Sources | |
|---|---|
| Domains | Messaging, Async_Programming |
| Last Updated | 2026-02-07 19:00 GMT |
Overview
A mechanism for asynchronously producing messages to Kafka topics with Future-based delivery confirmation.
Description
Async Message Production enables non-blocking message sending where the caller receives a Future that resolves when the broker acknowledges (or rejects) the message. This decouples the act of enqueuing a message from waiting for its delivery confirmation, allowing applications to pipeline multiple sends or interleave production with other async work.
The pattern involves constructing a record (specifying topic, optional key, payload, headers, partition, and timestamp), submitting it to the producer, and awaiting the delivery result. If the producer's internal queue is full, the operation retries with a configurable timeout before failing.
Usage
Use this principle when you need to send messages to Kafka topics in async Rust applications. The FutureProducer is appropriate for most use cases where you want automatic queue-full retry and await-based delivery confirmation. For fire-and-forget without retry, see Non_Blocking_Message_Production.
Theoretical Basis
Asynchronous message production follows the Producer-Consumer pattern with non-blocking enqueue:
Pseudo-code logic:
// Abstract algorithm
record = new_record(topic, key, payload)
delivery_future = producer.send(record, queue_timeout)
// ... do other async work ...
result = delivery_future.await // partition, offset, timestamp or error
The producer maintains an internal buffer. Messages are batched and sent to brokers in the background. A oneshot channel bridges the C callback (delivery report) to the Rust Future, completing it when the broker responds.