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Home Page: https://guaik-org.github.io/go-snowflake/
License: Apache License 2.0
go-snowflake
Home Page: https://guaik-org.github.io/go-snowflake/
License: Apache License 2.0
1bit | 41bit | 5bit | 5bit | 12bit |
---|---|---|---|---|
符号位(保留字段) | 时间戳(当前时间-纪元时间) | 数据中心id | 机器id | 自增序列 |
我的理解,分布式下,各机器间可以保证生成的id唯一.
但是好像并没有保证递增.比如以下场景:
同一时间戳时刻内,有两个两个数据中心(0x01
和0x02
)被调用;0x02
的先被调用,0x01
后被调用,如果生成的id用在同一个业务系统里的话,递增性质是不是就没有了?
同理可以类推到同一数据中心不同机器id上.
ps: snowflake好像没说保证递增 😢
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