Also the article doesn&#x27;t say WHY they didn&#x27;t use Kafka to persist the events. Kafka it&#x27;s designed to do that.<p>Once persisted the consumers can just read kafka data and send them to hadoop, with less latency. Or you can plug storm o spark in as you said and do the analisys there real time. Or both.<p>I&#x27;m just intrigued why.