SCRU128: Sortable, Clock and Random number-based Unique identifier

SCRU128 ID is yet another attempt to supersede [UUID] in the use cases that need decentralized, globally unique time-ordered identifiers. SCRU128 is inspired by [ULID] and [KSUID] and has the following features:

• 128-bit unsigned integer type
• Sortable by generation time (as integer and as text)
• 26-digit case-insensitive portable textual representation
• 44-bit biased millisecond timestamp that ensures remaining life of 550 years
• Up to 268 million time-ordered but unpredictable unique IDs per millisecond
• 84-bit layered randomness for collision resistance

```rust use scru128::{scru128, scru128_string};

// generate a new identifier object let x = scru128(); println!("{}", x); // e.g. "00S6GVKR1MH58KE72EJD87SDOO" println!("{}", x.as_u128()); // as a 128-bit unsigned integer

// generate a textual representation directly println!("{}", scru128_string()); // e.g. "00S6GVKR3F7R79I72EJF0J4RGC" ```

See [SCRU128 Specification] for details.

Optional features

• log - Enables logging via the log crate.
• serde - Enables serialization/deserialization via serde.

License

Licensed under the Apache License, Version 2.0.

See also

• docs.rs/scru128