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Interesting to read that they are using Unix sockets to send traffic to their backend processes. I know that it's easily done when using HaProxy but I have never read about people using it. I guess the fact that they are not using docker or another container runtime makes sockets rather simple to use.


It's standard way to connect things in UNIX and provides better performance. For example postgresql tcp+ssl is 175% slower than socket https://momjian.us/main/blogs/pgblog/2012.html#June_6_2012


But domain sockets only work between processes on the same machine, why would SSL be used in that case?


I do that every chance I can get.

At a guess, it's probably most loved by people picking old school simple architectures that aren't the sort of thing that goes viral.




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