I’m intrigued by the support for CBOR log output: I haven’t seen CBOR support built into any other widely-used infrastructure software before. Is HAProxy unusual in this regard, or am I just unaware of CBOR support elsewhere?
I honestly don't know, all I know is that we've had demands from users at very high loads because the logs are more compact and their parsing is more efficient. And once you have JSON output encoding, it's not much work to produce another encoding. Maybe other ones will follow by the way, we'll see.