com.twitter.snowflake.support

类 SecondsIdSequenceFactory

java.lang.Object

com.twitter.snowflake.support.ElasticIdSequenceFactory

com.twitter.snowflake.support.SecondsIdSequenceFactory

所有已实现的接口:

IdSequenceFactory

public class SecondsIdSequenceFactory
extends ElasticIdSequenceFactory

The unique id has 64bits (long), default allocated as blow:

sign: The highest bit is 0 delta seconds: The next 28 bits, represents delta seconds since a customer epoch(2017-01-01 00:00:00.000). Supports about 8.7 years until to 2025-07-04 21:24:15.000 worker id: The next 22 bits, represents the worker's id which assigns based on database, max id is about 420W sequence: The next 13 bits, represents a sequence within the same second, max for 8192/s

+------+----------------------+----------------+-----------+
 | sign |     delta seconds    | worker node id | sequence  |
 +------+----------------------+----------------+-----------+
   1bit          28bits              22bits         13bits
 

You can also specified the bits by setter method.

作者:

svili