Initial QSfera import
This commit is contained in:
+47
@@ -0,0 +1,47 @@
|
||||
# NUID
|
||||
|
||||
[](https://www.apache.org/licenses/LICENSE-2.0)
|
||||
[](http://goreportcard.com/report/nats-io/nuid)
|
||||
[](http://travis-ci.org/nats-io/nuid)
|
||||
[](https://github.com/nats-io/nuid/releases/tag/v1.0.1)
|
||||
[](http://godoc.org/github.com/nats-io/nuid)
|
||||
[](https://coveralls.io/github/nats-io/nuid?branch=master)
|
||||
|
||||
A highly performant unique identifier generator.
|
||||
|
||||
## Installation
|
||||
|
||||
Use the `go` command:
|
||||
|
||||
$ go get github.com/nats-io/nuid
|
||||
|
||||
## Basic Usage
|
||||
```go
|
||||
|
||||
// Utilize the global locked instance
|
||||
nuid := nuid.Next()
|
||||
|
||||
// Create an instance, these are not locked.
|
||||
n := nuid.New()
|
||||
nuid = n.Next()
|
||||
|
||||
// Generate a new crypto/rand seeded prefix.
|
||||
// Generally not needed, happens automatically.
|
||||
n.RandomizePrefix()
|
||||
```
|
||||
|
||||
## Performance
|
||||
NUID needs to be very fast to generate and be truly unique, all while being entropy pool friendly.
|
||||
NUID uses 12 bytes of crypto generated data (entropy draining), and 10 bytes of pseudo-random
|
||||
sequential data that increments with a pseudo-random increment.
|
||||
|
||||
Total length of a NUID string is 22 bytes of base 62 ascii text, so 62^22 or
|
||||
2707803647802660400290261537185326956544 possibilities.
|
||||
|
||||
NUID can generate identifiers as fast as 60ns, or ~16 million per second. There is an associated
|
||||
benchmark you can use to test performance on your own hardware.
|
||||
|
||||
## License
|
||||
|
||||
Unless otherwise noted, the NATS source files are distributed
|
||||
under the Apache Version 2.0 license found in the LICENSE file.
|
||||
Reference in New Issue
Block a user