# Snowflake
Snowflake is a crate that provides a simple implementation of unique-id generation based on [Twitter's snowflake](https://blog.twitter.com/engineering/en_us/a/2010/announcing-snowflake) logic.
```
+--------------------------------------------------------------------------+
| 1 Bit Unused | 41 Bit Timestamp |  10 Bit NodeID  |   12 Bit Sequence ID |
+--------------------------------------------------------------------------+
```
## Logic
- There are two components - `Generator` and `Config`.
- `Config` has a default implementation which provides 2 ^ 21 (2097152) unique ids per millisecond (1024 per node, across 2048 nodes) till year 2149 (~139 years from epoch). These values can be customised to support higher throughput or longer period of valid generation of unique IDs. Default config uses following details -
  - timestampBits - 42
  - nodeIdBits - 11