This has been the first time I could attend the Apache Kafka meetup in London. Previous meetings had me in Barcelona or flying. First realisation: it is a surprisingly crowded meetup! Clearly, everyone is using Kafka, even if it is not clear from the outside. Oh, and the food was pretty good, too. Thanks to the sponsor (which I have sadly forgotten).
I really enjoyed this one. The speaker was Jay Kreps, CEO and co-founder of Confluent (and author of I Heart Logs), so, basically, a Kafka top committer himself.