As a rule of thumb, I would recommend to always use
hash. The hash size used is 8 bytes, so anything smaller than ~8 chars should be ok to use as
hash - there wouldn’t be much performance difference). For anything significantly larger than 8 chars,
hash has much better performance.
As for the tour, - you’re right - there’s no need to have
exact there, since the term index allows
eq. I’ll get that changed. Thanks!