yes, LetsEncrypt really should support ed25519. Sadly, they do not.

Why would anyone use gzip instead of zstd in 2025? zstd is superior in every dimension.

gzip is a legacy algorithm that imo only gets used for compatibility with legacy software that understands nothing but gzip.

That would not be O(1), but O(n) per insert.

I've really come to prefer json5 as a config format: https://json5.org/

It's basically Json with comments, trailing commas, and unquoted object keys (and some other minor things).

Much nicer than real json as a config format, but still simple and declarative, not requiring an interpreter or being turing-complete.