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Yoshiyuki Mineo
2019-10-07 16:40:37 +09:00
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@@ -7,12 +7,24 @@ Sonyflake
[![Go Report Card](https://goreportcard.com/badge/github.com/sony/sonyflake)](https://goreportcard.com/report/github.com/sony/sonyflake)
Sonyflake is a distributed unique ID generator inspired by [Twitter's Snowflake](https://blog.twitter.com/2010/announcing-snowflake).
Sonyflake focuses on lifetime and performance on many host/core environment.
So it has a different bit assignment from Snowflake.
A Sonyflake ID is composed of
39 bits for time in units of 10 msec
8 bits for a sequence number
16 bits for a machine id
As a result, Sonyflake has the following advantages and disadvantages:
- The lifetime (174 years) is longer than that of Snowflake (69 years)
- It can work in more distributed machines (2^16) than Snowflake (2^10)
- It can generate 2^8 IDs per 10 msec at most in a single machine/thread (slower than Snowflake)
However, if you want more generation rate in a single host,
you can easily run multiple Sonyflake ID generators concurrently using goroutines.
Installation
------------