You don't have to be a rich go developer to build a high end nostr relay. You can host your nostr relay in a cheap, shared host with a ordinary mysql/sqlite database.
Now it is possible with Phatru, a new library to build customized nostr relays in PHP, architecture is inspired by Khatru (https://github.com/fiatjaf/khatru).
Go (no puns intended) check it out at https://github.com/dhalsim/phatru and give some comments.
nostr:nprofile1qydhwumn8ghj7un9d3shjtnhv4ehgetjde38gcewvdhk6tcprfmhxue69uhhq7tjv9kkjepwve5kzar2v9nzucm0d5hsqgpm7rrrljungc6q0tuh5hj7ue863q73qlheu4vywtzwhx42a7j9n5qnvvze