WorkerNodeEntityDefaultUidGenerator63 bits for timestampBits, workerIdBits, sequenceBitsRingBufferRingBuffer and BufferedUidProvider, default use scheduleRingBuffer, BufferedUidProvider, and whether use schedule paddingUidGenerator extends
from DefaultUidGenerator, based on a lock free RingBuffer
The spring properties you can specified as below:(BitsAllocator.getMaxSequence() + 1) <<
CachedUidGenerator.boostPower, Default as
paddingFactor: Represents a percent value of (0 - 100).UidGenerator
The unique id has 64bits (long), default allocated as blow:RejectedPutBufferHandler, we just do loggingWorkerIdAssigner,
the worker id will be discarded after assigned to the UidGenerator
基于DB自增的worker id 分配器的实现
SnowFlake中,deltaSeconds依赖时间戳,可以通过系统获取;sequence可以通过自增来控制;这俩字段都是项目可以自给自足的,而WorkerId则必须还有一个策略来提供。RejectedTakeBufferHandler, throws RuntimeException after loggingAtomicLong to prevent the FalseSharing problem
The CPU cache line commonly be 64 bytes, here is a sample of cache line after padding:AtomicLongRejectedTakeBufferHandler will be appliedValuedEnum defines an enumeration which is bounded to a value, you
may implements this interface when you defines such kind of enumerationDefaultUidGeneratorCopyright © 2023. All rights reserved.