I'm new to PostgreSQL and somewhat new to databases in general. Is there an established way of how we should index UUIDs in Postgres? I'm split between using hashing and using a trie, unless there's already something built-in that it uses automatically. Whatever I use is going to be handling huge amounts of data.

The SP-GiST operator family "text_ops" indexes using a trie. Because UUIDs are quite long and very dissimilar, these sound appealing even though I would only ever do full match searches.

There's also a hash option. Hashing is O(1), and I won't need to do any comparisons besides equality of course, but because UUIDs are quite long, I'm afraid that generating hashes from them would waste a lot of time.

Or is this something that depends too much on system and use specifics?