shortuuid.rb VS uulid.go

At the risk of sounding stupid, I have no idea how bit-shifting and bitwise operators work, though I've worked in the field for over a decade and am now a Staff Engineer or whatever. There, I said it.

It's just something I haven't gotten around to reading yet. I suspect some code would be made clearer by it, but even when doing something similar I wound up using the math textbook was to do it even though I suspect the bit operators would be much faster.

https://github.com/sudhirj/shortuuid.rb/blob/master/lib/shor...

https://github.com/sudhirj/shortuuid.go/blob/master/shortuui...

For those interested in time based UUIDs, I've written libraries in Ruby and Go to move quickly between them:

https://github.com/sudhirj/uulid.go

There’s a spec called ULID that’s pretty much this with default base32 encoding

https://github.com/ulid/spec

I’ve also worked on a UUID-ULID bridge for Go

https://github.com/sudhirj/uulid.go

And seeing as this is just 128 bits it’s quite easy to move seamlessly between formats and representations.

I’ve found this concept especially useful in nosql stores like DynamoDB, where using a ULID primary key makes objects time sortable automatically. It’s also quite easy to query for items by zeroing out the random component and setting only the time stamp bytes.