Databases are hard to swap out when you realize you need a different one.
That's true when you're talking about a generalized rdbms, but if this is an isolated set of tables for embeddings or something and you don't entangle it with everything else, it can be fine. See also, using Postgres as a KV store.
That's true when you're talking about a generalized rdbms, but if this is an isolated set of tables for embeddings or something and you don't entangle it with everything else, it can be fine. See also, using Postgres as a KV store.