TL;DR. golang.org/x/net/idna.Lookup.ToASCII runs UTS-46 NFKC mapping 0-9. A pre-IDNA net.ParseIP check rejects the NO_PROXY lists, TLS-SNI routers, and cookie-domain validators that TrimRight + ParseAddr golang.org/x/net/http/httpproxy, the canonical safe pattern, and two I ran into this one while writing a Go HTTP client for a private project. I idna.Lookup.ToASCII canonicalising the host The sha
Barman Replacing pgbackrest: I Migrated My Postgres Backups in Production and Here's What I Found The weekend I migrated from Vercel to Railway — the same one I mentioned when I talked about cold starts — I spent nearly twelve hours reading Postgres logs I'd never had to read that seriously before. It wasn't a tutorial. It was real production, real data, and the underlying question was always th