Hi everyone, I have another question. Is there any reason why retention and cleanup policy are defined at cluster level and not topic level? I can t see why it would not be possible from a technical point of view...
2017-03-06 14:38 GMT+01:00 Nicolas Motte <lingusi...@gmail.com>: > Hi everyone, > > I understand one of the reasons why Kafka is performant is by using > zero-copy. > > I often hear that when encryption is enabled, then Kafka has to copy the > data in user space to decode the message, so it has a big impact on > performance. > > If it is true, I don t get why the message has to be decoded by Kafka. I > would assume that whether the message is encrypted or not, Kafka simply > receives it, appends it to the file, and when a consumer wants to read it, > it simply reads at the right offset... > > Also I m wondering if it s the case if we don t use keys (pure queuing > system with key=null). > > Cheers > Nico > >
