3 ms·

ULID has like 80 bits of random per millisecond. I found some calculator online that showed the probability of collision on 80bits was very, very low even acro

ULID has like 80 bits of random per millisecond. I found some calculator online that showed the probability of collision on 80bits was very, very low even across time much longer than millisecond. I think knowing when an ID was created is harmless - and if it isn't there is a design problem that is larger than ID choice. There is another lib called hashid which can be used if masking that ID algo is important.

lewisl9029 4y ago
> I think knowing when an ID was created is harmless - and if it isn't there is a design problem that is larger than ID choice. I hope you're right, since I've been cautiously operating under that assumption so far. Cautiously, because of warnings, from people better versed in cryptography than I, in discussions like this one: https://news.ycombinator.com/item?id=29805433 https://news.ycombinator.com/item?id=29805433. I still haven't quite been able to internalize when this should vs shouldn't be something I should be concerned about, hence the comment.