Various previous discussions:

It's time to replace TCP in the datacenter position paper https://news.ycombinator.com/item?id=33401480 https://news.ycombinator.com/item?id=42168997

Review of Homa protocol https://news.ycombinator.com/item?id=28204808

Review of Linux implementation of Homa https://news.ycombinator.com/item?id=28440542

TCP vs. RPC part 1 https://news.ycombinator.com/item?id=34871670 part 2 https://news.ycombinator.com/item?id=34871710 part 3 https://news.ycombinator.com/item?id=35228716