PostgreSQL UNIX domain sockets vs TCP sockets

Question

I wonder if the UNIX domain socket connections with postgresql are faster then tcp connections from localhost in high concurrency rate and if it does, by how much?

Answer 1

afaik, unix domain socket (UDS) work like system pipes and it send ONLY data, not send checksum and other additional info, not use three-way handshake as TCP sockets...

ps: maybe UDS will be more faster