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Bruce Marriner 2016-06-01 15:51:05 -05:00
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@ -2,9 +2,11 @@ flake
====
[![GoDoc](https://godoc.org/github.com/bwmarrin/flake?status.svg)](https://godoc.org/github.com/bwmarrin/flake) [![Go report](http://goreportcard.com/badge/bwmarrin/flake)](http://goreportcard.com/report/bwmarrin/flake) [![Build Status](https://travis-ci.org/bwmarrin/flake.svg?branch=master)](https://travis-ci.org/bwmarrin/flake) [![Discord Gophers](https://img.shields.io/badge/Discord%20Gophers-general-blue.svg)](https://discord.gg/0f1SbxBZjYoCtNPP)
flake is a [Go](https://golang.org/) package that provides a very simple twitter
snowflake ID generator along with several functions to convert an ID into
different formats.
flake is a [Go](https://golang.org/) package that provides
* A very simple twitter snowflake Generator
* Methods to parse existing snowflake IDs
* Methods to convert a snowflake ID into several other data types.
* JSON Marshal/Unmarshal functions to easily use flake IDs within a JSON API.
## Getting Started
@ -20,9 +22,13 @@ go get github.com/bwmarrin/flake
### Usage
Import the package into your project then construct a new flake Node using a
unique node number from 0 to 1023. With the node object call the Generate()
method to generate and return a unique snowflake ID. Also MarshalJSON and
UnmarshalJSON methods are provided to easily use these ID's with a JSON API.
unique node number from 0 to 1023. With the node object call the Generate()
method to generate and return a unique snowflake ID.
Keep in mind that each node you create must have a unique node number, even
across multiple servers. If you do not keep node numbers unique the generator
cannot guarantee unique IDs across all nodes.
**Example Program:**
@ -69,20 +75,20 @@ func main() {
### Performance
The flake generator should be sufficiently fast enough of most systems to
generate the maximum or near of 4096 unique ID's per millisecond that the
snowflake ID supports. That is, around 243-244 nanoseconds per operation.
The flake generator should be sufficiently fast enough on most systems to
generate 4096 unique ID's per millisecond. This is the maximum that the
snowflake ID format supports. That is, around 243-244 nanoseconds per operation.
Since the flake generator is single threaded the primary limitation will be
the maximum speed of a single processor on your system.
To benchmark the generator on your system run the following command inside the
package directory.
flake package directory.
```sh
go test -bench=.
```
Also, if your curious, check out this commit that shows benchmarks that compare
a few different ways of implementing a generator.
If your curious, check out this commit that shows benchmarks that compare a few
different ways of implementing a snowflake generator in Go.
* https://github.com/bwmarrin/flake/tree/9befef8908df13f4102ed21f42b083dd862b5036