NoritamaFlake

• NoritamaFlake is a library that generates decentralized and K-ordered id, affected by SnowFlake and ObjectId(Mongo-id)
• Implemented in pure Rust

Key features

• Globally unique
• K-ordered
• Decentralized
  • local ip is cluster safe
  • multi process
• Configuration free
• Compact representation
  • URL-safe

[TODO] Specification

[timestamp:40bit][sequence:16bit][machine-id:32bit][process-id:8bit]

hex sample: 0677c8ecd600007f0000014a

[TODO] Limitation

• Expiration date is 34 years from epoch

Usage

[WIP] Library

• Issue a new id(use default Epoch)

//! ```cargo
//! [dependencies]
//! noritama = { git = "https://github.com/watawuwu/noritama" }
//! ```

use noritama::flake::*;
use noritama::flaker::*;

// create client
let flaker: Flaker = Flaker::new().unwrap();

// create id
let flake : Flake  = flaker.id().unwrap();
let id    : String = flake.hex();

• Specify the epoch

//! ```cargo
//! [dependencies]
//! noritama = { git = "https://github.com/watawuwu/noritama" }
//! time     = "*"
//! ```

use noritama::flake::*;
use noritama::flaker::*;
use time::*;

// create client
let epoch : Tm     = time::now;
let flaker: Flaker = Flaker::new_with_epoch_timestamp(epoch).unwrap();

// create id
let flake : Flake  = flaker.id().unwrap();
let id    : String = flake.hex();

[WIP] Command line

• Help

$ noritama -h
Noritama produces k-sorted ids. 0.1
watawuwu <watawuwu@gmail.com>
Noritama produces k-sorted ids.

USAGE:
    noritama [OPTIONS]

FLAGS:
    -h, --help       Prints help information
    -V, --version    Prints version information

OPTIONS:
    -d, --decode <decode>              decoded hexed id
    -s, --start-epoch <start-epoch>    epoch used for internal timestamp

• Issue a new id

$ noritama
0677c8ecd600007f0000014a

• Decode id

$ noritama -d 0677c8ecd600007f0000014a
hex: 0677c8ecd600007f0000014a([6, 119, 200, 236, 214, 0, 0, 127, 0, 0, 1, 74]), unix_ts: 1485693060310, internal_ts: 27779460310, seq: 0, mid: 2130706433, pid: 74, start_epo: 1457913600000

[TODO] Comparison

Name	Bit	Representation	Configuration	Sortable	Feild
UUID	128bit	36chars(16base)	free	no	timestamp(60bit): =>3653 years clock sequence(14bit): =>random + inc node(40bit): =>MAC address
Cassandra UUID(v1?)	128bit	36chars(16base)	free	no	timestamp(60bit): =>3653 years clock sequence(14bit): =>random + inc node(40bit): =>IP address
ObjectId (mongo-id)	96bit	24chars[16base]	free	yes	timestamp(32bit): =>second machine-id(24bit): process-id(16bit) counter(24bit)
Snowflake	64bit	20chars(10base)	machine/DC	yes	timestamp(41bit) =>69 year machine-id(5bit): =>central process-id(5bit) counter(12bit)
Flake(by Erlang)	128bit	18chars(62base)	no	yes	timestamp(64bit) worker-id(48bit): =>MAC Address sequence(16bit)
NoritamaFlake	96bit	24chars(16base)	no	yes	timestamp(40bit): =>34 year sequence(16bit): =>inc machine-id(32bit): =>ip address(ip4) process-id(8bit)