Hi All, First of all apologies if this has been previously discussed I have just joined the mail list (I cannot find a JIRA or KIP related nor via good old google search)
In our company we are looking to replace some of our more traditional message flows with Kafka. One thing we have found lacking though compared with most messaging systems is the ability to set header/metadata separate from our payload. We did think about the key, but as this is used for compaction we cannot have changing values here which metadata/header values will obviously be. e.g. these headers/metadata are useful for audit data or platform data that is not business payload related e.g. storing the clientId that generated the message, correlation id of a request/response, cluster id where the message was generate (case for MirrorMakers), message uuid etc this list is endless. We would like to propose extending the Record from ProducerRecord/ConsumerRecord<K, V> to ProducerRecord/ConsumerRecord<K,V,M> where M is metadata/header again being like the key and value a simple byte[] so that it is completely upto the end users how to serialize / deserialize it. What our people’s thoughts? Any other ideas how to add headers/metadata. How can I progress this? Cheers Mike The information contained in this email is strictly confidential and for the use of the addressee only, unless otherwise indicated. If you are not the intended recipient, please do not read, copy, use or disclose to others this message or any attachment. Please also notify the sender by replying to this email or by telephone (+44(020 7896 0011) and then delete the email and any copies of it. Opinions, conclusion (etc) that do not relate to the official business of this company shall be understood as neither given nor endorsed by it. IG is a trading name of IG Markets Limited (a company registered in England and Wales, company number 04008957) and IG Index Limited (a company registered in England and Wales, company number 01190902). Registered address at Cannon Bridge House, 25 Dowgate Hill, London EC4R 2YA. Both IG Markets Limited (register number 195355) and IG Index Limited (register number 114059) are authorised and regulated by the Financial Conduct Authority.
