1.3.2

• add MergedIdSegment to reduce the number of IdSegment creations.
• add PrefetchWorkerExecutorService to improve thread utilization of PrefetchWorker.
• optimize performance, use CacheClock to replace System#currentTimeMillis(too slow!)  implementation .
• enhance: Numerical overflow check
• optimize the calculation of safety distance

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• 增强：新增 MergedIdSegment 合并 IdSegment 避免创建过多 IdSegment 对象。
• 增强：新增 亲和性预取线程池 PrefetchWorkerExecutorService(PrefetchWorker 1:n PrefetchJob)，提升 PrefetchWorker 利用率，防止因申明过多 SegmentChainId 导致的创建过多线程的问题(PrefetchWorker 1:1 PrefetchJob)。
• 增强：使用 CacheClock 替换 System.currentTimeMillis提升获取当前时钟性能。
  • System.currentTimeMillis: 太慢了，TPS只有7191W+/s，低于 SegmentChainId 能达到的峰值12743W+/s，当开启IdSegment的ttl功能时会影响SegmentChainId峰值性能。
  • CacheClock: TPS 41765W+/s ，精度1秒，应用需要容忍潜在的1秒精度延迟可能性，在 TTL 检查的场景中完全适用。
• 增强：数值计算溢出检查。
• 增强：优化安全间隙（safeGap）计算逻辑

1.3.1

• add cosid-spring-redis support spring-data-redis
• fix IdSegmentChain performs two prefetch operations when it is first started
• fix the issue of PrefetchWorker log information output wrong

1.2.8

• add support IdSegment time to live(default IdSegment#TIME_TO_LIVE_FOREVER)

1.2.5

• PrefetchWorker supports dynamic expansion and contraction based on hungerThreshold
• add cosid-jdbc for support JdbcIdSegmentDistributor(database segment storage)
• change  SegmentId default SegmentIdProperties.Mode to CHAIN (recommend)
• change example -> rest-api

1.2.1

• optimize SegmentChainId just try set next not ensure success,prevent the problem of ID gap.
• optimize PrefetchWorker use more friendly thread names .
• change SegmentChainId.DEFAULT_PREFETCH_PERIOD to 1s
• optimize add SegmentChainId.forward log

1.1.8

• add IdSegmentDistributor.Mock for test
• optimize unit-test
• optimize jmh-test
• add support to enable SegmentChainId through configuration (spring-boot-starter-cosid)
• add RedisIdBenchmark VS RedisChainIdBenchmark TPS to README
• add LifecycleSegmentChainId for shutdown prefetchWorker
• Update performance report

1.1.4

• abstract IdSegment interface
• enhance DefaultSegmentId to prevent back-end storage IdSegment loss/rollback
• enhance IdSegmentDistributor to support batch acquisition of IdSegment.
• optimize the performance of SegmentChainId (lock-free), the ultimate performance after optimization is close to AtomicLong

1.1.2

• add experimental SegmentId mode enhancement API (SegmentChainId), support IdSegment prefetching.
  

1.1.0

• upgrade RedisIdGenerator to SegmentId mode
• add IdSegmentDistributor api for enhance the scalability of SegmentId mode
• inject the shared ID generator (key:share) into the IdGeneratorProvider
• update gradle 7.0 -> 7.1

1.0.4

• support to enable RedisIdGenerator and SnowflakeId at the same time through configuration (spring-boot-starter-cosid)