seq-index

Generate sequential ID values. The generated value is a 18-byte hex string. The value consists of current timestamp, an incrementing counter and the instance id.

Install

Install from npm

npm install seq-index

Usage

Create SeqIndex instance

var SeqIndex = require('seq-index');
var indexer = new SeqIndex();

get()

Generate a sequential ID using get()

var id = indexer.get();
// 15654036c1709f68f2

short()

Generate a sequential ID without instance suffix using short()

var shortId = indexer.short();
// 15654036c1709f

getByTime()

Use to convert a timestamp into a short ID for comparison

var shortId = indexer.getByTime(1470300906242, 0);
// 15654c36302000
var id = shortId + indexer.suffix;
// 15654c3630200068f2

License

Dual license MIT or EUPL-1.1+

seq-index is part of the Zone Mail Suite (ZMS). Suite of programs and modules for an efficient, fast and modern email server.