enum keyed message

[itayB]

Just wonder if the key_pointer capability is librdkafka extension or kafka officially supported.

I'm using librdkafka in my C++ for consume&produce keyed messages - where my keys are enum (for efficiency purpose).
Recently, I've added node.js producer (using kafka-node) and I didn't see option to send there keyed message which is not string.
for more info: http://stackoverflow.com/questions/36979586/kafka-node-send-enum-key-message-instead-of-string-key

[edenhill]

The Kafka protocol specifies the message key as arbitrary opaque binary bytes, thus it can contain any kind of data and there is no defined format for it, that is up to the application to define.

[itayB]

OK. Great, thanks for the quick answer!