diff --git a/idGenerator/assets/双缓存号段分配.webp b/idGenerator/assets/双缓存号段分配.webp
new file mode 100644
index 0000000..d04b30c
Binary files /dev/null and b/idGenerator/assets/双缓存号段分配.webp differ
diff --git a/idGenerator/buffer.go b/idGenerator/buffer.go
new file mode 100644
index 0000000..0ef78ba
--- /dev/null
+++ b/idGenerator/buffer.go
@@ -0,0 +1,72 @@
+package idgenerator
+
+import (
+	"sync"
+	"time"
+
+	"github.com/charlienet/go-mixed/idGenerator/store"
+)
+
+type obtainFunc func() (*store.Segment, error)
+
+type doubleBuffer struct {
+	current  *store.Segment // 当前
+	backup   *store.Segment // 备用
+	obtain   obtainFunc     // 数据段获取函数
+	inFill   bool           // 备用缓冲填充中
+	isReadly bool           // 备用缓冲区填充完成
+	mu       sync.Mutex
+}
+
+func newDoubleBuffer(obtainFunc obtainFunc) *doubleBuffer {
+	b := &doubleBuffer{obtain: obtainFunc}
+	b.current, _ = b.obtain()
+
+	return b
+}
+
+func (b *doubleBuffer) allot() (int64, bool) {
+	if !b.inFill && b.current.IsEnding() {
+		go b.full() // 填充备用缓冲
+	}
+
+	// 缓冲区耗尽时切换
+	if b.current.IsEmpty() {
+		// 检查备用缓冲是否已经填充完成，已完成时切换，否则等待
+		for !b.isReadly {
+			time.Sleep(time.Microsecond * 100)
+		}
+
+		b.switchBuf()
+	}
+
+	return b.current.Allot(), b.current.Reback()
+}
+
+func (b *doubleBuffer) full() {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	if !b.inFill {
+		var err error
+		b.inFill = true
+
+		b.backup, err = b.obtain()
+		if err != nil {
+			println("填充失败:", err.Error())
+			panic(err)
+		}
+		b.isReadly = true
+	}
+}
+
+func (b *doubleBuffer) switchBuf() {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	if b.isReadly {
+		b.current, b.backup = b.backup, b.current
+		b.inFill = false
+		b.isReadly = false
+	}
+}
diff --git a/idGenerator/buffer_test.go b/idGenerator/buffer_test.go
new file mode 100644
index 0000000..a672550
--- /dev/null
+++ b/idGenerator/buffer_test.go
@@ -0,0 +1,25 @@
+package idgenerator
+
+import (
+	"testing"
+
+	"github.com/charlienet/go-mixed/idGenerator/store"
+	"github.com/charlienet/go-mixed/redis"
+	"github.com/charlienet/go-mixed/tests"
+)
+
+func TestBufferAlloc(t *testing.T) {
+
+	tests.RunOnRedis(t, func(rdb redis.Client) {
+		f := func() (*store.Segment, error) {
+			return store.NewRedisStore("sss", rdb).Assign(3, 99, 10)
+		}
+
+		b := newDoubleBuffer(f)
+
+		for i := 0; i < 80; i++ {
+			t.Log(b.allot())
+		}
+
+	}, redis.ReidsOption{Addr: "192.168.123.50:6379", Password: "123456"})
+}
diff --git a/idGenerator/formater.go b/idGenerator/formater.go
new file mode 100644
index 0000000..c0b330e
--- /dev/null
+++ b/idGenerator/formater.go
@@ -0,0 +1,132 @@
+package idgenerator
+
+import (
+	"errors"
+	"math"
+	"strconv"
+	"time"
+)
+
+const (
+	YYYYMMDDHHmmss = "20060102150405"
+	YYYYMMDDHHmm   = "200601021504"
+	YYYYMMDDHH     = "2006010215"
+	YYYYMMDD       = "20060102"
+)
+
+type Layout int
+
+const (
+	Binary Layout = iota
+	Decimal
+)
+
+type formater interface {
+	MaxinalMachineCode() int64
+	MaximalSequence() int64
+	Format(machine, serial int64, reback bool) Id
+}
+
+type Id int64
+
+func (i Id) String() string {
+	if i == 0 {
+		return ""
+	}
+
+	return strconv.FormatInt(int64(i), 10)
+}
+
+func (i Id) Int64() int64 {
+	return int64(i)
+}
+
+// 标识生成器
+type generator struct {
+	maximalSequence    int64        // 序列段的最大值
+	maxinalMachineCode int64        // 机器码的最大值
+	sequenceLength     int64        // 序列段长度
+	machineCodeLength  int64        // 机器码长度
+	lastTimestamp      int64        // 最后回绕时间
+	getTimestampFunc   func() int64 // 获取时间段的方法
+}
+
+func (g generator) MaxinalMachineCode() int64 {
+	return g.maxinalMachineCode
+}
+
+func (g generator) MaximalSequence() int64 {
+	return g.maximalSequence
+}
+
+func (g *generator) getTimestamp(reback bool) int64 {
+	newTimestamp := g.getTimestampFunc()
+
+	for reback && g.lastTimestamp == newTimestamp {
+		time.Sleep(time.Microsecond * 10)
+		newTimestamp = g.getTimestampFunc()
+	}
+
+	g.lastTimestamp = newTimestamp
+	return newTimestamp
+}
+
+type binaryFormater struct {
+	generator
+}
+
+func newBinaryFormatter(start int64, sequenceLength, machineCodeLength int64) (*binaryFormater, error) {
+	return &binaryFormater{
+		generator: generator{
+			maximalSequence:    int64(-1 ^ (-1 << sequenceLength)),
+			maxinalMachineCode: int64(-1 ^ (-1 << machineCodeLength)),
+			sequenceLength:     sequenceLength,
+			machineCodeLength:  machineCodeLength,
+			getTimestampFunc:   func() int64 { return time.Now().Unix() - start },
+		},
+	}, nil
+}
+
+func (f *binaryFormater) Format(machine, serial int64, reback bool) Id {
+	timestamp := f.getTimestamp(reback)
+	return Id(timestamp<<(f.sequenceLength+f.machineCodeLength) | machine<<f.sequenceLength | serial)
+}
+
+type decimalFormater struct {
+	generator
+	supportReback bool
+}
+
+const (
+	decimalMaxLength = 19
+)
+
+func newDecimalFormater(format string, serialLength, machineLength int) (*decimalFormater, error) {
+	if len(format)+serialLength+machineLength > decimalMaxLength {
+		return nil, errors.New("the data length is out of limit")
+	}
+
+	serialShift := int64(math.Pow10(serialLength))
+	machineShift := int64(math.Pow10(machineLength))
+
+	return &decimalFormater{
+		generator: generator{
+			sequenceLength:     serialShift,
+			maximalSequence:    serialShift - 1,
+			machineCodeLength:  machineShift,
+			maxinalMachineCode: machineShift - 1,
+			getTimestampFunc: func() int64 {
+				now := time.Now()
+				v := now.Format(format)
+				r, _ := strconv.ParseInt(v, 10, 64)
+				return r
+			},
+		},
+		supportReback: len(format) == 14,
+	}, nil
+}
+
+func (f *decimalFormater) Format(machine, serial int64, reback bool) Id {
+	timestamp := f.getTimestamp(reback)
+	return Id(timestamp*f.sequenceLength*f.machineCodeLength + machine*f.sequenceLength + serial)
+}
diff --git a/idGenerator/formater_test.go b/idGenerator/formater_test.go
new file mode 100644
index 0000000..764e4b4
--- /dev/null
+++ b/idGenerator/formater_test.go
@@ -0,0 +1,34 @@
+package idgenerator
+
+import (
+	"testing"
+)
+
+func TestBinary(t *testing.T) {
+	f, _ := newBinaryFormatter(DefaultStartTimeStamp, 16, 12)
+	t.Log(f.maxinalMachineCode, f.maximalSequence)
+}
+
+func TestDecimal(t *testing.T) {
+	f, _ := newDecimalFormater(YYYYMMDDHHmmss, 4, 1)
+	t.Log(f.maxinalMachineCode, f.maxinalMachineCode)
+	t.Log(f.Format(22333, 9, false))
+}
+
+func TestDecimalMonth111(t *testing.T) {
+	f, _ := newDecimalFormater(YYYYMMDD, 4, 1)
+	t.Log(f.maxinalMachineCode, f.maxinalMachineCode)
+
+	t.Log(f.Format(233, 9, false))
+}
+
+func TestBinaryTimestamp(t *testing.T) {
+	f, _ := newBinaryFormatter(DefaultStartTimeStamp, 10, 4)
+	for i := 0; i < 100; i++ {
+		if i%7 == 0 {
+			t.Log(f.Format(int64(i), 0xF, true))
+		} else {
+			t.Log(f.Format(int64(i), 0xF, false))
+		}
+	}
+}
diff --git a/idGenerator/generator.go b/idGenerator/generator.go
new file mode 100644
index 0000000..ac9a8ee
--- /dev/null
+++ b/idGenerator/generator.go
@@ -0,0 +1,124 @@
+package idgenerator
+
+import (
+	"time"
+
+	"github.com/charlienet/go-mixed/idGenerator/store"
+	"github.com/charlienet/go-mixed/mathx"
+	"github.com/charlienet/go-mixed/redis"
+)
+
+const (
+	defaultDoubleBufferStep int64 = 50
+)
+
+var DefaultStartTimeStamp = time.Date(2023, 1, 1, 0, 0, 0, 0, time.Local).Unix()
+
+type opt func(*idGenerator) error
+
+type Option struct {
+	TimeFormat    string
+	SerialLength  int
+	MachineLength int
+}
+
+type idGenerator struct {
+	store    storage       // 外部存储
+	formater formater      // 格式化器
+	buffer   *doubleBuffer // 序列缓冲
+}
+
+func WithMem(machineCode int64) opt {
+	return WithStore(store.NewMemStore(machineCode))
+}
+
+func WithRedis(key string, rdb redis.Client) opt {
+	return WithStore(store.NewRedisStore(key, rdb))
+}
+
+func WithStore(s storage) opt {
+	return func(ig *idGenerator) error {
+		ig.store = s
+		return nil
+	}
+}
+
+func WithDecimalFormater(format string, serialLength, machineLength int) opt {
+	return func(ig *idGenerator) error {
+		f, err := newDecimalFormater(format, serialLength, machineLength)
+		if err != nil {
+			return err
+		}
+
+		ig.formater = f
+		return nil
+	}
+}
+
+func WithBinaryFormatter(start int64, serialLength, machineLength int64) opt {
+	return func(ig *idGenerator) error {
+		f, err := newBinaryFormatter(start, serialLength, machineLength)
+		if err != nil {
+			return err
+		}
+
+		ig.formater = f
+		return nil
+	}
+}
+
+func New(opts ...opt) (*idGenerator, error) {
+	g := &idGenerator{}
+
+	for _, o := range opts {
+		err := o(g)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	if g.store == nil {
+		g.store = store.NewMemStore(0)
+	}
+
+	_, err := g.store.UpdateMachineCode(g.formater.MaxinalMachineCode()) // 初始化机器码
+	if err != nil {
+		return nil, err
+	}
+
+	g.buffer = newDoubleBuffer(g.obtain) // 初始化序列缓冲
+
+	return g, nil
+}
+
+func (g *idGenerator) WithRedis(key string, rdb redis.Client) *idGenerator {
+	return g.WithStore(store.NewRedisStore(key, rdb))
+}
+
+func (g *idGenerator) WithStore(s storage) *idGenerator {
+	g.store = s
+	return g
+}
+
+func (g *idGenerator) Next() Id {
+	serial, reback := g.buffer.allot()
+	id := g.formater.Format(g.store.MachineCode(), serial, reback)
+
+	return id
+}
+
+func (g *idGenerator) Close() {
+	if g.store != nil {
+		g.store.Close()
+	}
+}
+
+func (g *idGenerator) obtain() (*store.Segment, error) {
+	step := mathx.Min(defaultDoubleBufferStep, g.formater.MaximalSequence())
+	s, err := g.store.Assign(0, g.formater.MaximalSequence(), step)
+	if err != nil {
+		println("分配失败", err.Error())
+	}
+
+	return s, err
+}
diff --git a/idGenerator/genterator_test.go b/idGenerator/genterator_test.go
new file mode 100644
index 0000000..1080559
--- /dev/null
+++ b/idGenerator/genterator_test.go
@@ -0,0 +1,151 @@
+package idgenerator_test
+
+import (
+	"sync"
+	"testing"
+
+	idgenerator "github.com/charlienet/go-mixed/idGenerator"
+	"github.com/charlienet/go-mixed/redis"
+	"github.com/charlienet/go-mixed/sets"
+	"github.com/charlienet/go-mixed/tests"
+)
+
+var redisOption = redis.ReidsOption{Addr: "192.168.123.50:6379", Password: "123456"}
+
+func TestGenerator(t *testing.T) {
+	tests.RunOnRedis(t, func(rdb redis.Client) {
+		generator, err := idgenerator.New(
+			idgenerator.WithDecimalFormater(idgenerator.YYYYMMDDHHmmss, 1, 1),
+			idgenerator.WithRedis("idgen_test", rdb))
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		for i := 0; i < 20; i++ {
+			t.Log(generator.Next())
+		}
+	})
+}
+
+func TestDecimalGenerator(t *testing.T) {
+	tests.RunOnRedis(t, func(rdb redis.Client) {
+		generator, err := idgenerator.New(
+			idgenerator.WithDecimalFormater(idgenerator.YYYYMMDDHHmmss, 3, 1),
+			idgenerator.WithRedis("idgen_test", rdb))
+		if err != nil {
+			t.Fatal(err)
+		}
+		for i := 0; i < 200; i++ {
+			t.Log(generator.Next())
+		}
+
+	}, redis.ReidsOption{Addr: "192.168.123.50:6379", Password: "123456"})
+}
+
+func TestDecimalMonth(t *testing.T) {
+	tests.RunOnRedis(t, func(rdb redis.Client) {
+		generator, err := idgenerator.New(
+			idgenerator.WithDecimalFormater(idgenerator.YYYYMMDD, 2, 1),
+			idgenerator.WithRedis("idgen_test", rdb))
+		if err != nil {
+			t.Fatal(err)
+		}
+		for i := 0; i < 105; i++ {
+			t.Log(generator.Next())
+		}
+
+	}, redis.ReidsOption{Addr: "192.168.123.50:6379", Password: "123456"})
+}
+
+func TestParallelCreate(t *testing.T) {
+	tests.RunOnRedis(t, func(rdb redis.Client) {
+		var wg sync.WaitGroup
+
+		wg.Add(2)
+		go func() {
+			defer wg.Done()
+
+			g1, err := idgenerator.New(
+				idgenerator.WithDecimalFormater(idgenerator.YYYYMMDDHHmmss, 3, 1),
+				idgenerator.WithRedis("idgen_testcccc", rdb))
+			if err != nil {
+				panic(err)
+			}
+
+			_ = g1.Next().Int64()
+		}()
+
+		go func() {
+			defer wg.Done()
+
+			g2, err := idgenerator.New(
+				idgenerator.WithDecimalFormater(idgenerator.YYYYMMDDHHmmss, 3, 1),
+				idgenerator.WithRedis("idgen_testcccc", rdb))
+			if err != nil {
+				panic(err)
+			}
+
+			_ = g2.Next().Int64()
+		}()
+
+		wg.Wait()
+
+	}, redisOption)
+}
+
+func TestParallel(t *testing.T) {
+	set := sets.NewHashSet[int64]().Sync()
+	opt := redis.ReidsOption{Addr: "192.168.123.50:6379", Password: "123456"}
+
+	_ = set
+	f := func() {
+		tests.RunOnRedis(t, func(rdb redis.Client) {
+			generator, err := idgenerator.New(
+				idgenerator.WithDecimalFormater(idgenerator.YYYYMMDDHHmmss, 3, 1),
+				idgenerator.WithRedis("idgen_testcccc", rdb))
+			if err != nil {
+				t.Fatal(err)
+			}
+			defer generator.Close()
+
+			generator.Next()
+			for i := 0; i < 50000; i++ {
+				id := generator.Next().Int64()
+				if set.Contains(id) {
+					panic("生成重复")
+				}
+				set.Add(id)
+			}
+
+		}, opt)
+	}
+
+	var wg sync.WaitGroup
+	for i := 0; i < 6; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			f()
+		}()
+	}
+
+	wg.Wait()
+}
+
+func BenchmarkGenerator(b *testing.B) {
+	tests.RunOnRedis(b, func(rdb redis.Client) {
+		b.Run("bbb", func(b *testing.B) {
+			generator, err := idgenerator.New(
+				idgenerator.WithDecimalFormater(idgenerator.YYYYMMDDHHmmss, 3, 1),
+				idgenerator.WithRedis("idgen_test", rdb))
+			if err != nil {
+				b.Fatal(err)
+			}
+
+			for i := 0; i < 999; i++ {
+				generator.Next()
+			}
+
+		})
+	}, redis.ReidsOption{Addr: "192.168.123.50:6379", Password: "123456"})
+}
diff --git a/idGenerator/id_generator.go b/idGenerator/id_generator.go
deleted file mode 100644
index ce7f741..0000000
--- a/idGenerator/id_generator.go
+++ /dev/null
@@ -1,118 +0,0 @@
-package idgenerator
-
-import (
-	"fmt"
-	"math"
-	"time"
-
-	_ "unsafe"
-)
-
-// 时间段开始时间 2022-01-01
-const startTimeStamp = 1640966400
-
-const (
-	MachineIdBits  = uint(8)                              //机器id所占的位数
-	SequenceBits   = uint(12)                             //序列所占的位数
-	MachineIdMax   = int64(-1 ^ (-1 << MachineIdBits))    //支持的最大机器id数量
-	SequenceMask   = uint64(-1 ^ (-1 << SequenceBits))    //
-	MachineIdShift = uint64(SequenceBits)                 //机器id左移位数
-	TimestampShift = uint64(SequenceBits + MachineIdBits) //时间戳左移位数
-)
-
-type TimePrecision int
-
-const (
-	Second TimePrecision = iota // 秒
-	Minute                      // 分
-	Day                         // 日
-)
-
-type Config struct {
-	Machine   int
-	TimeScope TimePrecision
-}
-
-type Generator struct {
-	machine   uint64
-	timeScope TimePrecision // 时间段精度
-	timestamp uint64        // 上次生成时间
-	sequence  uint64        // 上次使用序列
-}
-
-type Id struct {
-	machine   uint64 // 机器标识
-	Scope     int    // 时间精度
-	Timestamp uint64 // 生成时间
-	Sequence  uint64 // 标识序列
-}
-
-func New(cfg Config) *Generator {
-	return &Generator{
-		machine:   uint64(cfg.Machine),
-		timeScope: cfg.TimeScope,
-	}
-}
-
-func (g *Generator) Next() Id {
-
-	now := currentTimestamp()
-
-	if g.timestamp == now && g.sequence == 0 {
-		fmt.Println(time.Now().Format("2006-01-02 15:04:05.000"), "下一个时间点")
-		for now <= g.timestamp {
-			// runtime.Gosched()
-			now = currentTimestamp()
-		}
-	}
-
-	g.timestamp = now                            // 标识生成时间
-	g.sequence = (g.sequence + 1) & SequenceMask // 生成下一序列，超过最大值时返回零
-
-	return Id{
-		machine:   g.machine,
-		Timestamp: g.timestamp,
-		Sequence:  g.sequence,
-	}
-}
-
-func (i Id) Id() uint64 {
-	return i.Timestamp<<TimestampShift | i.machine<<MachineIdShift | i.Sequence
-}
-
-func (i Id) genCheck() uint64 {
-	return math.MaxUint64
-}
-
-func (i Id) String() string {
-	return fmt.Sprintf("Time:%d scope: %d Machine: %d Ser:%06d id:%d", i.Timestamp, i.Scope, i.machine, i.Sequence, i.Id())
-}
-
-func (g *Generator) NextId() uint64 {
-	return g.Next().Id()
-}
-
-func (g *Generator) Batch(num int) []uint64 {
-	ret := make([]uint64, num)
-
-	for i := 0; i < num; i++ {
-		ret[i] = g.NextId()
-	}
-
-	return ret
-}
-
-func Decode(id uint64) Id {
-	return Id{}
-}
-
-func Verify(id uint64) bool {
-	return false
-}
-
-func currentTimestamp() uint64 {
-	return uint64(time.Now().Unix() - startTimeStamp)
-}
-
-//go:linkname runtimeNano runtime.nanotime
-func runtimeNano() int64
diff --git a/idGenerator/id_generator_test.go b/idGenerator/id_generator_test.go
deleted file mode 100644
index 6c99154..0000000
--- a/idGenerator/id_generator_test.go
+++ /dev/null
@@ -1,32 +0,0 @@
-package idgenerator_test
-
-import (
-	"testing"
-
-	idgenerator "github.com/charlienet/go-mixed/idGenerator"
-)
-
-func TestNextId(t *testing.T) {
-	generator := idgenerator.New(idgenerator.Config{})
-
-	for i := 0; i < 10; i++ {
-		t.Log(generator.Next().Id())
-	}
-}
-
-func TestBatch(t *testing.T) {
-	generator := idgenerator.New(idgenerator.Config{})
-
-	b := generator.Batch(20)
-	for _, i := range b {
-		t.Log(i)
-	}
-}
-
-func TestNext(t *testing.T) {
-	generator := idgenerator.New(idgenerator.Config{})
-
-	for i := 0; i < 10; i++ {
-		t.Log(generator.Next())
-	}
-}
diff --git a/idGenerator/readme.md b/idGenerator/readme.md
new file mode 100644
index 0000000..d770d55
--- /dev/null
+++ b/idGenerator/readme.md
@@ -0,0 +1,114 @@
+id生成服务
+
+标识生成服务，可用于分布式环境的标识生成服务，本服务可以多实例部署。
+
+要求
+1. 全局唯一: 必须保证生成的 ID 是全局性唯一的；
+2. 趋势递增: 生成的 ID 需要按照某种规则有序，便于数据库的写入和排序操作；
+3. 单调递增: 后生成的标识大于前面生成的标识
+3. 可用性: 需要保证高并发下的可用性。
+4. 自主性: 分布式环境下不依赖中心认证即可自行生成 ID；
+5. 安全性: 不暴露系统和业务的信息。在一些业务场景下，需要 ID 无规则或者不规则;
+
+
+标识组成
+1. 时间信息，从当前时间中根据模板获取数据段。
+
+
+号段模式
+
+![号段模式](assets/双缓存号段分配.webp)
+
+
+批量获取标识，业务应用使用后临近剩余数量时生成新的号段，使用双标识缓冲区方式保存。在活动缓冲区使用量达到限定值时在备缓冲区放置新的号段。
+
+号段分配器
+
+数据结构
+1. 最大序列
+2. 步长
+3. 版本号
+
+分配步骤
+1. 服务端按照KEY存储当前分配的最大值
+2. 获取是
+
+序列回绕，当序列递增到最大值时恢复为起始值重新开始。在使用中按照业务场景同一时间段中不能耗尽序列值。当序列发生回绕时分配器返回已回绕（backward）。
+
+
+
+
+操作接口
+1. 客户端注册标识，客户端使用应用名、规则(前缀、步长、阈值、初始值)进行注册。注册成功后返回标识
+
+
+标识生成规则，时间段、数字序列
+
+1. 前缀: 使用模板方式生成，生成参数包括当前时间，时间戳。
+2. 位数: 表示数据序列包含的位数，如4位表示序列
+3. 初始值：序列初始值，序列到达最大值时返回到初始值。
+
+标识生成统一包含时间信息，由于在分布式环境中各应用节点时间可能并不同步，可能造成应用节点生成重复。
+
+1. 应用端获取片段时记录当前时间(T1)
+2. 请求服务端分配片段
+3. 服务端记录报文到达时间(T2)
+4. 服务端处理完成后记录离开时间(T3)
+5. 应用端接收到响应时，记录时间(T4)
+
+时间周期延时
+
+
+1. Delay = ( T4 - T1 ) - ( T3 - T2 )
+2. Offset = (( T2- T1 ) + ( T3 – T4 )) / 2
+
+应用端使用延时和偏移计算当前时间
+
+标识服务服务器多活
+
+
+
+微信序列号生成方案
+
+微信序列号跟用户 uin 绑定，具有以下性质：递增的 64 位整形；使用每个用户独立的 64 位 sequence 的体系，而不是用一个全局的 64 位（或更高位） sequence ，很大原因是全局唯一的 sequence 会有非常严重的申请互斥问题，不容易去实现一个高性能高可靠的架构。其实现方式包含如下两个关键点：
+
+1）步进式持久化：增加一个缓存中间层，内存中缓存最近一个分配出现的 sequence：cur_seq，以及分配上限：max_seq；分配 sequence 时，将 cur_seq++，与分配上限 max_seq 比较，如果 cur_seq > max_seq，将分配上限提升一个步长 max_seq += step，并持久化 max_seq；重启时，读出持久化的 max_seq，赋值给 cur_seq。此种处理方式可以降低持久化的硬盘 IO 次数，可以系统的整体吞吐量。
+
+2）分号段共享存储：引入号段 section 的概念，uin 相邻的一段用户属于一个号段，共享一个 max_seq。该处理方式可以大幅减少 max_seq 数据的大小，同时可以进一步地降低 IO 次数。
+
+
+二进制模式
+按照二进制模式处理序列号生成，各数据段按照各自的位长度组装
+
+十进制模式
+
+
+缺陷
+
+当发生序列回绕时，不同的时间序列有不同的处理。如时间序列精度为日，那么在发生回绕时认为此时的回绕不能发生。如果应用在当日内被重启，并且发生了回绕，当前机制无法检测此问题。
+序列记录可以依赖于外部存储，如Redis，DB等。当外部存储失效时序列可能会发生冲突。此时当时间段没有前进时可能发生重复。一般认为DB为不失效存储。
+
+
+需要烦精确的选择时间段和序列的相对关系，一般情况下
+
+
+
+
+ID分配器工作流程
+
+初始化
+1. 创建生成器
+2. 创建外部存储
+3. 指定生成器生成规则，机器码长度，序列长度，序列化格式。
+4. 创建双缓存，使用外部存储分配数据段。
+
+
+标识分配
+1. 向序列缓冲器获取下一序列
+2. 向时间段分配器获取下一时间戳（传入是否回旋）
+4. 由标识组装器获取
+
+格式化器
+
+    十进制格式化，时间段格式串
+    二进制格式化，起始时间，时间精度
\ No newline at end of file
diff --git a/idGenerator/store.go b/idGenerator/store.go
new file mode 100644
index 0000000..93152d3
--- /dev/null
+++ b/idGenerator/store.go
@@ -0,0 +1,11 @@
+package idgenerator
+
+import "github.com/charlienet/go-mixed/idGenerator/store"
+
+// 序列存储分配器
+type storage interface {
+	MachineCode() int64                                  // 当前机器码
+	UpdateMachineCode(max int64) (int64, error)          // 更新机器标识
+	Assign(min, max, step int64) (*store.Segment, error) // 分配号段
+	Close()
+}
diff --git a/idGenerator/store/mem_store.go b/idGenerator/store/mem_store.go
new file mode 100644
index 0000000..a36c691
--- /dev/null
+++ b/idGenerator/store/mem_store.go
@@ -0,0 +1,60 @@
+package store
+
+import (
+	"sync"
+
+	"github.com/charlienet/go-mixed/mathx"
+)
+
+type memStore struct {
+	mu      sync.Mutex
+	machine int64
+	current int64
+}
+
+func NewMemStore(machineCode int64) *memStore {
+	return &memStore{machine: machineCode}
+}
+
+func (s *memStore) UpdateMachineCode(max int64) (int64, error) {
+	return s.machine, nil
+}
+func (s *memStore) MachineCode() int64 {
+	return s.machine
+}
+
+func (s *memStore) Assign(min, max, step int64) (*Segment, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	step = mathx.Min(step, max)
+	start := mathx.Max(s.current, min)
+	end := start + step
+
+	reback := false
+	if start >= max {
+		start = min
+		end = step
+		s.current = end
+
+		reback = true
+	}
+
+	if end > max {
+		end = max
+		s.current = end
+	}
+
+	s.current = end
+
+	return &Segment{
+		start:   start,
+		current: start,
+		end:     end,
+		reback:  reback,
+	}, nil
+}
+
+func (s *memStore) Close() {
+
+}
diff --git a/idGenerator/store/mem_store_test.go b/idGenerator/store/mem_store_test.go
new file mode 100644
index 0000000..6e38beb
--- /dev/null
+++ b/idGenerator/store/mem_store_test.go
@@ -0,0 +1,21 @@
+package store_test
+
+import (
+	"testing"
+
+	"github.com/charlienet/go-mixed/idGenerator/store"
+)
+
+func TestMemSmall(t *testing.T) {
+	s := store.NewMemStore(2)
+	for i := 0; i < 10; i++ {
+		t.Log(s.Assign(1, 9, 20))
+	}
+}
+
+func TestMemBig(t *testing.T) {
+	s := store.NewMemStore(2)
+	for i := 0; i < 10; i++ {
+		t.Log(s.Assign(0, 99, 18))
+	}
+}
diff --git a/idGenerator/store/mysql_store.go b/idGenerator/store/mysql_store.go
new file mode 100644
index 0000000..3ed177b
--- /dev/null
+++ b/idGenerator/store/mysql_store.go
@@ -0,0 +1,2 @@
+package store
+
diff --git a/idGenerator/store/redis_store.go b/idGenerator/store/redis_store.go
new file mode 100644
index 0000000..79ae021
--- /dev/null
+++ b/idGenerator/store/redis_store.go
@@ -0,0 +1,194 @@
+package store
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"sync"
+	"time"
+
+	"github.com/charlienet/go-mixed/rand"
+	"github.com/charlienet/go-mixed/redis"
+)
+
+const (
+	allocatedKey = "allocated"
+	sequenceKey  = "sequence"
+	delaySecond  = 10
+)
+
+const (
+	// 机器码分配及保活，检查机器码键值是否匹配，如匹配成功对键进行延时。如不匹配需要重新申请机器码
+	// 请求参数  机器码，机器识别码，机器码最大值
+	machineLua = `
+	local newKey = KEYS[1]..":"..ARGV[1]
+	if redis.call("GET", newKey) == ARGV[2] then
+		redis.call("EXPIRE", newKey, 10)
+		return tonumber(ARGV[1])
+	else
+		for i = 0, ARGV[3], 1 do
+			newKey = KEYS[1]..":"..tostring(i)
+
+			if redis.call("EXISTS", newKey) == 0 then
+				redis.call("SET", newKey, ARGV[2], "EX", 10)
+				return i
+			end
+		end
+		return -1
+	end`
+
+	// 序列分配min, max, step
+	segmentLua = `
+local key = KEYS[1]
+local min = tonumber(ARGV[1])
+local max = tonumber(ARGV[2])
+local step = tonumber(ARGV[3])
+
+if step > max then
+	step = max
+end
+
+if redis.call("EXISTS", key) == 0 then
+	redis.call("SET", key, step)
+	return {min, step, 0}
+end
+
+local begin = tonumber(redis.call("GET", key))
+local increase = redis.call("INCRBY", key, step)
+local reback = 0
+
+if begin >= max then
+	begin = min
+	increase = step
+
+	redis.call("SET", key, step)
+	reback = 1
+end
+
+if increase > max then
+	increase = max
+	redis.call("SET", key, increase)
+end
+
+return {begin, increase, reback}
+`
+)
+
+type redisStore struct {
+	rdb         redis.Client
+	machinekey  string        // 机器码键
+	sequenceKey string        // 序列键
+	value       string        // 随机键值
+	machineCode int64         // 机器码
+	close       chan struct{} // 关闭保活协程
+	isRunning   bool          // 是否已经关闭
+	mu          sync.Mutex
+}
+
+func NewRedisStore(key string, rdb redis.Client) *redisStore {
+	return &redisStore{
+		rdb:         rdb,
+		machinekey:  rdb.JoinKeys(key, allocatedKey),
+		sequenceKey: rdb.JoinKeys(key, sequenceKey),
+		value:       rand.Hex.Generate(24),
+		close:       make(chan struct{}),
+	}
+}
+
+// 分配机器标识，分配值为-1时表示分配失败
+func (s *redisStore) UpdateMachineCode(max int64) (int64, error) {
+	err := s.updateMachine(max)
+	if err != nil {
+		return -1, err
+	}
+
+	// 关闭原协程，开启新的保活协程
+
+	// if s.isRunning {
+	// 	s.close <- struct{}{}
+	// }
+
+	// if !s.isRunning {
+	// s.close <- struct{}{}
+	go s.keepAlive(max)
+	// }
+
+	return s.machineCode, nil
+}
+
+func (s *redisStore) MachineCode() int64 {
+	return s.machineCode
+}
+
+func (s *redisStore) Assign(min, max, step int64) (*Segment, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
+	defer cancel()
+
+	// 序列段分配
+	key := s.rdb.JoinKeys(s.sequenceKey, fmt.Sprintf("%v", s.machineCode))
+	r, err := s.rdb.Eval(ctx, segmentLua, []string{key}, min, max, step).Result()
+	if err != nil {
+		return &Segment{}, err
+	}
+
+	start, end, reback := split(r)
+	return &Segment{start: start, end: end, current: start, reback: reback}, err
+}
+
+func split(r any) (start, end int64, reback bool) {
+	if result, ok := r.([]any); ok {
+		start = result[0].(int64)
+		end = result[1].(int64)
+		reback = result[2].(int64) == 1
+	}
+
+	return
+}
+
+func (s *redisStore) updateMachine(max int64) error {
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
+	defer cancel()
+
+	r, err := s.rdb.Eval(ctx, machineLua, []string{s.machinekey}, s.machineCode, s.value, max).Result()
+	if err != nil {
+		return err
+	}
+
+	if r == nil {
+		return errors.New("failed to obtain machine code")
+	}
+
+	s.machineCode = r.(int64)
+	if s.machineCode == -1 {
+		return errors.New("machine code allocation failed")
+	}
+
+	return nil
+}
+
+func (s *redisStore) Close() {
+	s.close <- struct{}{}
+	s.isRunning = false
+}
+
+func (s *redisStore) keepAlive(max int64) {
+	t := time.NewTicker(time.Second * (delaySecond / 3))
+	defer t.Stop()
+
+	for {
+		select {
+		case <-t.C:
+			// println("当前机器码:", s.machineCode)
+			err := s.updateMachine(max)
+			if err != nil {
+				fmt.Println("err:", err.Error())
+			}
+		case <-s.close:
+			println("保活停止")
+			return
+		}
+	}
+}
diff --git a/idGenerator/store/redis_store_test.go b/idGenerator/store/redis_store_test.go
new file mode 100644
index 0000000..965ee4c
--- /dev/null
+++ b/idGenerator/store/redis_store_test.go
@@ -0,0 +1,106 @@
+package store_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/charlienet/go-mixed/idGenerator/store"
+	"github.com/charlienet/go-mixed/redis"
+	"github.com/charlienet/go-mixed/tests"
+)
+
+func TestSmallSerail(t *testing.T) {
+	tests.RunOnRedis(t, func(rdb redis.Client) {
+		s := store.NewRedisStore("sss", rdb)
+		for i := 0; i < 5; i++ {
+			t.Log(s.Assign(0, 9, 20))
+		}
+	}, redis.ReidsOption{Addr: "192.168.123.50:6379", Password: "123456"})
+}
+
+func TestSmallAssign(t *testing.T) {
+	tests.RunOnRedis(t, func(rdb redis.Client) {
+
+		s := store.NewRedisStore("sss", rdb)
+
+		for i := 0; i < 10; i++ {
+			t.Log(s.Assign(0, 9, 30))
+		}
+
+	}, redis.ReidsOption{Addr: "192.168.123.50:6379", Password: "123456"})
+}
+
+func TestBigAssign(t *testing.T) {
+	tests.RunOnRedis(t, func(rdb redis.Client) {
+
+		s := store.NewRedisStore("sss", rdb)
+
+		for i := 0; i < 102; i++ {
+			t.Log(s.Assign(0, 99, 10))
+		}
+
+	}, redis.ReidsOption{Addr: "192.168.123.50:6379", Password: "123456"})
+}
+
+func TestRedisAssign(t *testing.T) {
+	tests.RunOnRedis(t, func(rdb redis.Client) {
+
+		s := store.NewRedisStore("sss", rdb)
+
+		for i := 0; i < 10; i++ {
+			t.Log(s.Assign(21, 99, 30))
+		}
+
+	}, redis.ReidsOption{Addr: "192.168.123.50:6379", Password: "123456"})
+}
+
+func TestFullRedisAssign(t *testing.T) {
+	tests.RunOnRedis(t, func(rdb redis.Client) {
+
+		s := store.NewRedisStore("sss", rdb)
+
+		for i := 0; i < 10; i++ {
+			t.Log(s.Assign(0, 999, 99))
+		}
+
+	}, redis.ReidsOption{Addr: "192.168.123.50:6379", Password: "123456"})
+}
+
+func TestUpdateMachineCode(t *testing.T) {
+	tests.RunOnRedis(t, func(rdb redis.Client) {
+
+		for i := 0; i < 20; i++ {
+			s := store.NewRedisStore("id", rdb)
+			code, err := s.UpdateMachineCode(99)
+			t.Log("获取到机器标识:", code, err)
+
+			if err != nil {
+				return
+			}
+
+			time.Sleep(time.Millisecond * 100)
+
+			// s.Close()
+		}
+
+		time.Sleep(time.Second * 10)
+
+	}, redis.ReidsOption{Addr: "192.168.123.50:6379", Password: "123456", Prefix: "cacc"})
+
+}
+
+func TestUpdate(t *testing.T) {
+	tests.RunOnRedis(t, func(rdb redis.Client) {
+		s := store.NewRedisStore("id", rdb)
+		s.UpdateMachineCode(99)
+		t.Log(s.MachineCode())
+
+		s.UpdateMachineCode(99)
+		t.Log(s.MachineCode())
+
+		s2 := store.NewRedisStore("id", rdb)
+		s2.UpdateMachineCode(99)
+		t.Log(s2.MachineCode())
+
+	}, redis.ReidsOption{Addr: "192.168.123.50:6379", Password: "123456", Prefix: "cacc"})
+}
diff --git a/idGenerator/store/segment.go b/idGenerator/store/segment.go
new file mode 100644
index 0000000..2307182
--- /dev/null
+++ b/idGenerator/store/segment.go
@@ -0,0 +1,33 @@
+package store
+
+import "fmt"
+
+// 号段
+type Segment struct {
+	start   int64
+	end     int64
+	current int64
+	reback  bool
+}
+
+func (s *Segment) Allot() int64 {
+	s.current++
+	return s.current
+}
+
+func (s *Segment) IsEnding() bool {
+	return (s.current - s.start) > (s.end - s.current)
+}
+
+func (s *Segment) IsEmpty() bool {
+	return s.current == s.end
+}
+
+func (s *Segment) Reback() bool {
+	// println("回旋确认:", s.reback, s.current == (s.start+1))
+	return s.reback && s.current == (s.start+1)
+}
+
+func (s *Segment) String() string {
+	return fmt.Sprintf("start:%d-%d(%v)", s.start, s.end, s.reback)
+}