NSQ has been (IMO) far far easier to operate than Kafka has been. With Kafka you need a Zookeeper cluster in addition to your Kafka brokers. Not to mention developing against NSQ is pretty simple whereas Kafka you need to think about partitions and offsets.
If you're worried about data loss, Kakfa can be what you're looking for (but takes a lot to learn how to operate it correctly).
If you're worried about data loss, Kakfa can be what you're looking for (but takes a lot to learn how to operate it correctly).