Is there any way to create a short unique code like short GUID?

Question

I want to create a short GUID. Is there any way to create a short unique code like short GUID? I want to create a ticket tracking number.

Answer 1

Really depends on your usage.

For example, if you were generating them at a pace less than 1 per second, you could just increment a 32bit int (1/4 the size of a 128bit GUID). That would last you a little over 68 years at the rate of 1 per second.

If you work out your usage, it should be pretty simple to work out the minimum size you can get away with. It will also depend if you want to be able to generate them anywhere, or if they will be generated by a single server or piece of software.