UniqueIdGenerator (XiPKI :: ca-server 6.5.1 API)

java.lang.Object
- org.xipki.ca.server.UniqueIdGenerator

```
public class UniqueIdGenerator
extends Object
```
Unique Identifier Generator.
An id consists of
1. highest bit is set to 0 to assure positive long.
2. epoch in ms: 46 bits for 1312 years after the epoch
3. offset: 10 bits
4. shard_id: 7 bits
Idea is borrowed from http://instagram-engineering.tumblr.com/post/10853187575/sharding-ids-at-instagram
Since:

2.0.0

Author:

Lijun Liao (xipki)

- Constructor Summary
  
  Constructors
  Constructor Description
  
  UniqueIdGenerator(long epoch, int shardId)
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  long nextId()
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

UniqueIdGenerator

public UniqueIdGenerator(long epoch,
                         int shardId)

Method Detail
- nextId
```
public long nextId()
```