Expand description
Sortable (timestamp-first) unique identifier
§Why?
Random identifiers can be bad for performance when inserting into balanced b-tree indexes.
§Variants
| variant | timestamp bits | random bits |
|---|---|---|
u32, i32 | 16 (hours since unix epoch) | 16 |
u64, i64 | 40 (seconds since unix epoch) | 24 |
u128, i128 | 64 (milliseconds since unix epoch) | 64 |
§Usage
use suid::Suid;
println!("{}", u32::suid());
println!("{}", i32::suid());
println!("{}", u64::suid());
println!("{}", i64::suid());
println!("{}", u128::suid());
println!("{}", i128::suid());