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@@ -11,7 +11,7 @@ namespace Yitter.OrgSystem.TestA
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class Program
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{
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// 测试参数(默认配置下,最佳性能是10W/s)
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static int genIdCount = 50000; // 计算ID数量(如果要验证50W效率,请将TopOverCostCount设置为20000或适当增加SeqBitLength)
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static int genIdCount = 2;//50000; // 计算ID数量(如果要验证50W效率,请将TopOverCostCount设置为20000或适当增加SeqBitLength)
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static short method = 1; // 1-漂移算法,2-传统算法
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@@ -35,9 +35,12 @@ namespace Yitter.OrgSystem.TestA
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WorkerIdBitLength = 6,
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SeqBitLength = 6,
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DataCenterIdBitLength = 10,
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TopOverCostCount = 2000,
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//MinSeqNumber = 1,
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//TimestampType = 1,
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// MinSeqNumber = 1,
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// MaxSeqNumber = 200,
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// BaseTime = DateTime.Now.AddYears(-10),
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@@ -128,6 +131,7 @@ namespace Yitter.OrgSystem.TestA
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MinSeqNumber = options.MinSeqNumber,
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MaxSeqNumber = options.MaxSeqNumber,
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Method = options.Method,
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//TimestampType = 1,
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};
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Console.WriteLine("Gen:" + i);
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@@ -64,6 +64,22 @@ namespace Yitter.IdGenerator
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public virtual int TopOverCostCount { get; set; } = 2000;
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/// <summary>
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/// 数据中心ID(默认0)
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/// </summary>
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public virtual uint DataCenterId { get; set; } = 0;
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/// <summary>
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/// 数据中心ID长度(默认0)
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/// </summary>
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public virtual byte DataCenterIdBitLength { get; set; } = 0;
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/// <summary>
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/// 时间戳类型(0-毫秒,1-秒),默认0
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/// </summary>
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public virtual byte TimestampType { get; set; } = 0;
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public IdGeneratorOptions()
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{
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@@ -51,9 +51,9 @@ namespace Yitter.IdGenerator
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/// <summary>
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/// 最大漂移次数(含)
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/// </summary>
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protected readonly int TopOverCostCount = 0;
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protected int TopOverCostCount = 0;
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protected readonly byte _TimestampShift = 0;
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protected byte _TimestampShift = 0;
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protected static object _SyncLock = new object();
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protected ushort _CurrentSeqNumber;
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@@ -215,7 +215,7 @@ namespace Yitter.IdGenerator
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_TurnBackIndex));
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}
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private long NextOverCostId()
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protected virtual long NextOverCostId()
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{
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long currentTimeTick = GetCurrentTimeTick();
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@@ -262,7 +262,7 @@ namespace Yitter.IdGenerator
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return CalcId(_LastTimeTick);
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}
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private long NextNormalId()
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protected virtual long NextNormalId()
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{
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long currentTimeTick = GetCurrentTimeTick();
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@@ -319,7 +319,7 @@ namespace Yitter.IdGenerator
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return CalcId(_LastTimeTick);
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}
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private long CalcId(in long useTimeTick)
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protected virtual long CalcId(in long useTimeTick)
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{
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var result = ((useTimeTick << _TimestampShift) +
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((long)WorkerId << SeqBitLength) +
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@@ -329,7 +329,7 @@ namespace Yitter.IdGenerator
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return result;
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}
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private long CalcTurnBackId(in long useTimeTick)
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protected virtual long CalcTurnBackId(in long useTimeTick)
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{
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var result = ((useTimeTick << _TimestampShift) +
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((long)WorkerId << SeqBitLength) + _TurnBackIndex);
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83
C#.NET/source/Yitter.IdGenerator/Core/SnowWorkerM3.cs
Normal file
83
C#.NET/source/Yitter.IdGenerator/Core/SnowWorkerM3.cs
Normal file
@@ -0,0 +1,83 @@
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/*
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* 版权属于:yitter(yitter@126.com)
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* 开源地址:https://github.com/yitter/idgenerator
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* 版权协议:MIT
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* 版权说明:只要保留本版权,你可以免费使用、修改、分发本代码。
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* 免责条款:任何因为本代码产生的系统、法律、政治、宗教问题,均与版权所有者无关。
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*
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*/
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using System;
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using System.Threading;
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using System.Threading.Tasks;
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namespace Yitter.IdGenerator
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{
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/// <summary>
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/// 雪花漂移算法(支持数据中心ID和秒级时间戳)
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/// </summary>
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internal class SnowWorkerM3 : SnowWorkerM1
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{
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/// <summary>
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/// 数据中心ID(默认0)
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/// </summary>
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protected readonly uint DataCenterId = 0;
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/// <summary>
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/// 数据中心ID长度(默认0)
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/// </summary>
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protected readonly byte DataCenterIdBitLength = 0;
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/// <summary>
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/// 时间戳类型(0-毫秒,1-秒),默认0
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/// </summary>
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protected readonly byte TimestampType = 0;
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public SnowWorkerM3(IdGeneratorOptions options) : base(options)
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{
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// 秒级时间戳类型
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TimestampType = options.TimestampType;
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// DataCenter相关
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DataCenterId = options.DataCenterId;
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DataCenterIdBitLength = options.DataCenterIdBitLength;
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if (TimestampType == 1)
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{
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TopOverCostCount = 0;
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}
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_TimestampShift = (byte)(DataCenterIdBitLength + WorkerIdBitLength + SeqBitLength);
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}
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protected override long CalcId(in long useTimeTick)
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{
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var result = ((useTimeTick << _TimestampShift) +
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((long)DataCenterId << DataCenterIdBitLength) +
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((long)WorkerId << SeqBitLength) +
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(long)_CurrentSeqNumber);
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_CurrentSeqNumber++;
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return result;
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}
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protected override long CalcTurnBackId(in long useTimeTick)
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{
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var result = ((useTimeTick << _TimestampShift) +
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((long)DataCenterId << DataCenterIdBitLength) +
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((long)WorkerId << SeqBitLength) +
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_TurnBackIndex);
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_TurnBackTimeTick--;
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return result;
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}
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protected override long GetCurrentTimeTick()
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{
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return TimestampType == 0 ?
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(long)(DateTime.UtcNow - BaseTime).TotalMilliseconds :
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(long)(DateTime.UtcNow - BaseTime).TotalSeconds;
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}
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}
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}
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@@ -46,12 +46,12 @@ namespace Yitter.IdGenerator
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{
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throw new ApplicationException("WorkerIdBitLength error.(range:[1, 21])");
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}
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if (options.SeqBitLength + options.WorkerIdBitLength > 22)
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if (options.DataCenterIdBitLength + options.WorkerIdBitLength + options.SeqBitLength > 22)
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{
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throw new ApplicationException("error:WorkerIdBitLength + SeqBitLength <= 22");
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throw new ApplicationException("error:DataCenterIdBitLength + WorkerIdBitLength + SeqBitLength <= 22");
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}
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// 3.WorkerId
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// 3.WorkerId & DataCenterId
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var maxWorkerIdNumber = (1 << options.WorkerIdBitLength) - 1;
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if (maxWorkerIdNumber == 0)
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{
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@@ -62,6 +62,12 @@ namespace Yitter.IdGenerator
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throw new ApplicationException("WorkerId error. (range:[0, " + maxWorkerIdNumber + "]");
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}
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var maxDataCenterIdNumber = (1 << options.DataCenterIdBitLength) - 1;
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if (options.DataCenterId < 0 || options.DataCenterId > maxDataCenterIdNumber)
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{
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throw new ApplicationException("DataCenterId error. (range:[0, " + maxDataCenterIdNumber + "]");
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}
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// 4.SeqBitLength
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if (options.SeqBitLength < 2 || options.SeqBitLength > 21)
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{
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@@ -87,18 +93,22 @@ namespace Yitter.IdGenerator
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switch (options.Method)
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{
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case 1:
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_SnowWorker = new SnowWorkerM1(options);
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break;
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case 2:
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_SnowWorker = new SnowWorkerM2(options);
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break;
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default:
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_SnowWorker = new SnowWorkerM1(options);
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if (options.DataCenterIdBitLength == 0 && options.TimestampType == 0)
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{
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_SnowWorker = new SnowWorkerM1(options);
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}
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else
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{
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_SnowWorker = new SnowWorkerM3(options);
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}
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break;
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}
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if (options.Method == 1)
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if (options.Method != 2)
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{
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Thread.Sleep(500);
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}
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10
README.md
10
README.md
@@ -146,7 +146,7 @@ QQ群:646049993
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❄ ***WorkerIdBitLength***,机器码位长,决定 WorkerId 的最大值,**默认值6**,取值范围 [1, 19],实际上有些语言采用 无符号 ushort (uint16) 类型接收该参数,所以最大值是16,如果是采用 有符号 short (int16),则最大值为15。
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❄ **WorkerId**,机器码,**最重要参数**,无默认值,必须 **全局唯一**,必须 **程序设定**,缺省条件(WorkerIdBitLength取默认值)时最大值63,理论最大值 2^WorkerIdBitLength-1(不同实现语言可能会限定在 65535 或 32767,原理同 WorkerIdBitLength 规则)。不同机器或不同应用实例 **不能相同**,你可通过应用程序配置该值,也可通过调用外部服务获取值。针对自动注册WorkerId需求,本算法提供默认实现:通过 redis 自动注册 WorkerId 的动态库,详见“Tools\AutoRegisterWorkerId”。
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❄ **WorkerId**,机器码,**最重要参数**,无默认值,必须 **全局唯一**(或相同 DataCenterId 内唯一),必须 **程序设定**,缺省条件(WorkerIdBitLength取默认值)时最大值63,理论最大值 2^WorkerIdBitLength-1(不同实现语言可能会限定在 65535 或 32767,原理同 WorkerIdBitLength 规则)。不同机器或不同应用实例 **不能相同**,你可通过应用程序配置该值,也可通过调用外部服务获取值。针对自动注册WorkerId需求,本算法提供默认实现:通过 redis 自动注册 WorkerId 的动态库,详见“Tools\AutoRegisterWorkerId”。
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**特别提示**:如果一台服务器部署多个独立服务,需要为每个服务指定不同的 WorkerId。
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@@ -158,6 +158,14 @@ QQ群:646049993
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❄ ***BaseTime***,基础时间(也称:基点时间、原点时间、纪元时间),有默认值(2020年),是毫秒时间戳(是整数,.NET是DatetTime类型),作用是:用生成ID时的系统时间与基础时间的差值(毫秒数)作为生成ID的时间戳。基础时间一般无需设置,如果觉得默认值太老,你可以重新设置,不过要注意,这个值以后最好不变。
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第二版增加参数(非必须):
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❄ ***DataCenterId***,数据中心ID(默认0),请确保全局唯一。
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❄ ***DataCenterIdBitLength***,数据中心ID长度(默认0)。
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❄ ***TimestampType***,时间戳类型(0-毫秒,1-秒),默认0。
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#### 常规集成
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