tsuid
Time Series Unique ID
Generates 8-byte UUID that consists of:
- 41 bits for time in milliseconds (we can use it until 2084/09/06 lunch time comes)
- 13 bits for additional information - Can be used it to store the logical shard ID
- 10 bits that represent an auto-incrementing sequence.
Installation
$ npm install --save tsuid
Examples
const tsuid = require('tsuid');
tsuid(); // Default: Base64 - "D6zWpFyMJGc"
tsuid("hex"); // Hex String - "facd6acec2ff868"
tsuid("decimal"); // Decimal String - "1129513692534654057"Documentation
tsuid(options)
Generates and returns UUID.
options(object || string): Generating options. (or return type)
| Option | Description | Range | Default |
|---|---|---|---|
| type | Return type of generated ID. See below for more details. | - | 'base64' |
| additional | Additional Unique Information (ex: Logical Shard ID) | 0 ~ 8191 | (Random) |
| counter | Auto-incrementing sequence - to prevent conflicting | 0 ~ 1023 | (Random) |
Return types
| Name | Description | Type |
|---|---|---|
| base64 | Base64 Hash (Note that this is not pure Base64. We uses URL-Safe Base64URL) | String |
| decimal | Decimal String | String |
| number | (Same as above) | - |
| hex | Hex String | String |
| hash | (Same as above) | - |
| long | Long object | Long |