KIP-1150 in Apache Kafka is a big deal (Diskless Topics)

TL;DR KIP-1150 introduces Diskless Kafka topics that write directly to S3 instead of replicating between brokers. It literally reduces costs by 97% (from $1.8M to $20K annually for a 1GiB/s cluster) and brings operational benefits for diskless topics like: no disk management headaches, instant broker scaling, and simplified load balancing.