There is a path to replace TCP in the datacenter

[J65nko]

From https://www.theregister.com/2022/07/...cp_datacenter/ :

One of the most entrenched standards of the last forty years, the Transmission Control Protocol (TCP), might be seeing the end of the line, at least for applications in some of the world's largest datacenters.

[snip]

Four decades ago, TCP, with its focus on networks with maybe one thousand geographically distributed nodes, often hundreds of miles apart, was truly bleeding edge. It could do the then-critical job of streaming big chunks of data over long distances and even today remains the default basis for almost every web-based technology.

The datacenter of today is, of course, wildly different. Now, we're dealing with hundreds of machines in close proximity, communicating at short time intervals. TCP was designed for a world of millisecond packet delivery from one end of the network to another, but in a datacenter this job is done in a microsecond.