diff --git a/cache/big_cache.go b/cache/big_cache.go
index f2ba813..4fc7dd3 100644
--- a/cache/big_cache.go
+++ b/cache/big_cache.go
@@ -4,20 +4,42 @@ import (
 	"errors"
 	"time"
 
-	"github.com/allegro/bigcache"
+	"github.com/allegro/bigcache/v3"
+	"github.com/charlienet/go-mixed/logx"
 )
 
 var _ MemCache = &bigCacheClient{}
 
 type BigCacheConfig struct {
+	Shards             int
+	LifeWindow         time.Duration
+	CleanWindow        time.Duration
+	MaxEntriesInWindow int
+	MaxEntrySize       int
+	HardMaxCacheSize   int
+	log                logx.Logger
 }
 
 type bigCacheClient struct {
 	cache *bigcache.BigCache
 }
 
-func NewBigCache(c *BigCacheConfig) (*bigCacheClient, error) {
-	bigCache, err := bigcache.NewBigCache(bigcache.Config{})
+func NewBigCache(c BigCacheConfig) (*bigCacheClient, error) {
+	config := bigcache.DefaultConfig(time.Minute * 10)
+
+	config.LifeWindow = c.LifeWindow
+	config.LifeWindow = c.LifeWindow
+	config.CleanWindow = c.CleanWindow
+	config.MaxEntriesInWindow = c.MaxEntriesInWindow
+	config.MaxEntrySize = c.MaxEntrySize
+	config.HardMaxCacheSize = c.HardMaxCacheSize
+	config.Logger = c.log
+
+	if c.Shards > 0 {
+		config.Shards = c.Shards
+	}
+
+	bigCache, err := bigcache.NewBigCache(config)
 	if err != nil {
 		return nil, err
 	}
@@ -35,8 +57,14 @@ func (c *bigCacheClient) Set(key string, entry []byte, expire time.Duration) err
 	return c.cache.Set(key, entry)
 }
 
-func (c *bigCacheClient) Delete(key string) error {
-	return c.cache.Delete(key)
+func (c *bigCacheClient) Delete(keys ...string) error {
+	for _, k := range keys {
+		if err := c.cache.Delete(k); err != nil {
+			return err
+		}
+	}
+
+	return nil
 }
 
 func (c *bigCacheClient) Exist(key string) {
diff --git a/cache/cache.go b/cache/cache.go
index 7e5c20e..5d26db2 100644
--- a/cache/cache.go
+++ b/cache/cache.go
@@ -1,36 +1,40 @@
 package cache
 
 import (
+	"context"
 	"errors"
 	"time"
 
 	"github.com/charlienet/go-mixed/bytesconv"
+	"github.com/charlienet/go-mixed/logx"
 )
 
-var ErrNotFound = errors.New("not found")
+var ErrNotFound = errors.New("key not found")
 
-type LoadFunc func() (any, error)
+type LoadFunc func(context.Context) (any, error)
 
 type Cache struct {
 	prefix           string           // 键前缀
+	retry            int              // 资源获取时的重试次数
 	mem              MemCache         // 内存缓存
 	distributdCache  DistributdCache  // 分布式缓存
 	publishSubscribe PublishSubscribe // 发布订阅
-	qps              *qps
+	qps              *qps             //
+	logger           logx.Logger      // 日志记录
 }
 
-func NewCache(opts ...option) (*Cache, error) {
-	c := &Cache{
-		qps: NewQps(),
-	}
+func NewCache(opts ...option) *Cache {
 
+	c := acquireDefaultCache()
 	for _, f := range opts {
-		f(c)
+		if err := f(c); err != nil {
+			return c
+		}
 	}
 
 	go c.subscribe()
 
-	return c, nil
+	return c
 }
 
 func (c *Cache) Set(key string, value any, expiration time.Duration) error {
@@ -60,13 +64,16 @@ func (c *Cache) Get(key string, out any) error {
 	return nil
 }
 
-func (c *Cache) GetFn(key string, out any, fn LoadFunc, expiration time.Duration) (bool, error) {
-	ret, err := fn()
+func (c *Cache) GetFn(ctx context.Context, key string, out any, fn LoadFunc, expiration time.Duration) (bool, error) {
+	c.Get(key, out)
+
+	// 多级缓存中未找到时,放置缓存对象
+	ret, err := fn(ctx)
 	if err != nil {
 		return false, err
 	}
 
-	_ = ret
+	c.Set(key, ret, expiration)
 
 	return false, nil
 }
@@ -75,20 +82,22 @@ func (c *Cache) Exist(key string) (bool, error) {
 	return false, nil
 }
 
-func (c *Cache) Delete(key string) error {
+func (c *Cache) Delete(key ...string) error {
 	if c.mem != nil {
-		c.mem.Delete(key)
+		c.mem.Delete(key...)
 	}
 
 	if c.distributdCache != nil {
-		c.distributdCache.Delete(key)
+		c.distributdCache.Delete(key...)
 	}
 
 	return nil
 }
 
-func (c *Cache) getFromMem(key string, out any) error {
+func (c *Cache) subscribe() {
+}
 
+func (c *Cache) getFromMem(key string, out any) error {
 	bytes, err := c.mem.Get(key)
 	if err != nil {
 		return err
@@ -101,13 +110,16 @@ func (c *Cache) getFromMem(key string, out any) error {
 	return nil
 }
 
-func (c *Cache) subscribe() {
+// 从缓存加载数据
+func (c *Cache) getFromCache() {
+
 }
 
-func (c *Cache) genKey(key string) string {
-	if len(c.prefix) == 0 {
-		return key
-	}
+// 从数据源加载数据
+func (c *Cache) getFromSource(ctx context.Context, key string, fn LoadFunc) {
+
+	// 1. 尝试获取资源锁，如成功获取到锁加载数据
+	// 2. 未获取到锁，等待从缓存中获取
+	fn(ctx)
 
-	return c.prefix + "-" + key
 }
diff --git a/cache/cache_builder.go b/cache/cache_builder.go
new file mode 100644
index 0000000..4f18222
--- /dev/null
+++ b/cache/cache_builder.go
@@ -0,0 +1,99 @@
+package cache
+
+import "github.com/charlienet/go-mixed/logx"
+
+const defaultPrefix = "cache"
+
+type option func(*Cache) error
+
+type options struct {
+	Prefix string
+}
+
+func acquireDefaultCache() *Cache {
+	return &Cache{
+		prefix: defaultPrefix,
+		qps:    NewQps(),
+	}
+}
+
+type cacheBuilder struct {
+	prefix           string
+	redisOptions     RedisConfig
+	bigCacheConfig   BigCacheConfig
+	freeSize         int
+	publishSubscribe PublishSubscribe
+	log              logx.Logger
+}
+
+func NewCacheBuilder() *cacheBuilder {
+	return &cacheBuilder{}
+}
+
+func (b *cacheBuilder) WithLogger(log logx.Logger) *cacheBuilder {
+	b.log = log
+	return b
+}
+
+func (b *cacheBuilder) WithPrefix(prefix string) *cacheBuilder {
+	b.prefix = prefix
+	return b
+}
+
+func (b *cacheBuilder) WithRedis(opts RedisConfig) *cacheBuilder {
+	b.redisOptions = opts
+	return b
+}
+
+func (b *cacheBuilder) WithBigCache(opts BigCacheConfig) *cacheBuilder {
+	b.bigCacheConfig = opts
+	return b
+}
+
+func (b *cacheBuilder) WithFreeCache(size int) *cacheBuilder {
+	b.freeSize = size
+	return b
+}
+
+// 使用自定义分布式缓存
+func WithDistributedCache(c DistributdCache) {
+
+}
+
+func (b *cacheBuilder) WithPublishSubscribe(p PublishSubscribe) *cacheBuilder {
+	b.publishSubscribe = p
+	return b
+}
+
+func (b cacheBuilder) Build() (*Cache, error) {
+	var err error
+	cache := acquireDefaultCache()
+	if len(b.prefix) > 0 {
+		cache.prefix = b.prefix
+	}
+
+	b.redisOptions.Prefix = cache.prefix
+
+	redis := NewRedis(b.redisOptions)
+	if err := redis.Ping(); err != nil {
+		return cache, err
+	}
+
+	var mem MemCache
+	if b.freeSize > 0 {
+		mem = NewFreeCache(b.freeSize)
+	} else {
+		if b.log != nil {
+			b.bigCacheConfig.log = b.log
+		}
+
+		mem, err = NewBigCache(b.bigCacheConfig)
+	}
+
+	cache.distributdCache = redis
+	cache.mem = mem
+	cache.publishSubscribe = b.publishSubscribe
+	cache.logger = b.log
+
+	return cache, err
+}
diff --git a/cache/cache_builder_test.go b/cache/cache_builder_test.go
new file mode 100644
index 0000000..e3dca8d
--- /dev/null
+++ b/cache/cache_builder_test.go
@@ -0,0 +1,29 @@
+package cache
+
+import (
+	"testing"
+	"time"
+
+	"github.com/charlienet/go-mixed/logx"
+)
+
+func TestBuilder(t *testing.T) {
+	cache, err := NewCacheBuilder().
+		WithLogger(logx.NewLogrus(logx.WithFormatter(logx.NewNestedFormatter(logx.NestedFormatterOption{
+			Color: true,
+		})))).
+		WithRedis(RedisConfig{
+			Addrs:    []string{"192.168.2.222:6379"},
+			Password: "123456",
+		}).
+		WithBigCache(BigCacheConfig{}).
+		// WithFreeCache(10 * 1024 * 1024).
+		Build()
+
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	u := SimpleUser{FirstName: "Radomir", LastName: "Sohlich"}
+	t.Log(cache.Set(defaultKey, u, time.Minute*10))
+}
diff --git a/cache/cache_test.go b/cache/cache_test.go
index 91d0796..2c2e16c 100644
--- a/cache/cache_test.go
+++ b/cache/cache_test.go
@@ -1,24 +1,40 @@
 package cache
 
 import (
+	"context"
+	"sync"
+	"sync/atomic"
 	"testing"
 	"time"
+
+	"github.com/charlienet/go-mixed/bytesconv"
+	"github.com/charlienet/go-mixed/logx"
+)
+
+var (
+	defaultKey = "u-000"
 )
 
 func TestNewCache(t *testing.T) {
-	r := NewRedis(&RedisConfig{})
-	if err := r.Ping(); err != nil {
-		t.Fatal(err)
-	}
+	c, err := NewCacheBuilder().
+		WithRedis(RedisConfig{
+			Addrs:    []string{"192.168.2.222:6379"},
+			Password: "123456",
+		}).
+		WithPrefix("cache_test").
+		WithLogger(logx.NewLogrus()).
+		Build()
 
-	c, err := NewCache(
-		WithDistributdCache(r),
-		WithPrefix("cache_test"))
 	if err != nil {
 		t.Fatal(err)
 	}
 
 	c.Set("abc", "value", time.Minute*10)
+
+	var s string
+	c.Get("abc", &s)
+
+	t.Log(s)
 }
 
 type SimpleUser struct {
@@ -26,60 +42,108 @@ type SimpleUser struct {
 	LastName  string
 }
 
-func TestMem(t *testing.T) {
-	c, err := NewCache(WithFreeCache(10 * 1024 * 1024))
-	if err != nil {
-		t.Fatal(err)
+func TestMemCache(t *testing.T) {
+	b, _ := NewBigCache(BigCacheConfig{})
+	var mems = []MemCache{
+		NewFreeCache(10 * 1024 * 1024),
+		b,
 	}
-	key := "u-000"
+
 	u := SimpleUser{FirstName: "Radomir", LastName: "Sohlich"}
+	encoded, _ := bytesconv.Encode(u)
+	for _, m := range mems {
+		m.Set(defaultKey, encoded, time.Second)
+		ret, err := m.Get(defaultKey)
+		if err != nil {
+			t.Fatal(err)
+		}
 
-	c.Set(key, u, time.Second)
-
-	var u2 SimpleUser
-	c.Get(key, &u2)
-
-	t.Logf("%+v", u2)
+		var u2 SimpleUser
+		bytesconv.Decode(ret, &u2)
+		t.Log(u2)
+	}
 }
 
 func TestDistributedCache(t *testing.T) {
-	key := "key-001"
-	c := NewRedis(&RedisConfig{Addrs: []string{"192.168.2.222:6379"}, DB: 6, Password: "123456"})
+	c := NewRedis(RedisConfig{Addrs: []string{"192.168.2.222:6379"}, DB: 6, Password: "123456", Prefix: "abcdef"})
 
 	if err := c.Ping(); err != nil {
 		t.Fatal(err)
 	}
+
+	t.Log(c.Exist(defaultKey))
+
 	u := SimpleUser{FirstName: "redis client"}
-	c.Set(key, u, time.Second)
 
 	var u2 SimpleUser
-	if err := c.Get(key, &u2); err != nil {
+	c.Get(defaultKey, &u2)
+
+	c.Set(defaultKey, u, time.Minute*10)
+	t.Log(c.Exist(defaultKey))
+
+	if err := c.Get(defaultKey, &u2); err != nil {
 		t.Fatal("err:", err)
 	}
 	t.Logf("%+v", u2)
+
+	// c.Delete(defaultKey)
 }
 
 func TestGetFn(t *testing.T) {
-	c, err := NewCache(WithBigCache(&BigCacheConfig{}))
-	if err != nil {
-		t.Fatal(err)
-	}
-	key := "u-000"
-
+	c := buildCache()
 	var u2 SimpleUser
-	c.GetFn(key, &u2, func() (out any, err error) {
+
+	c.GetFn(context.Background(), defaultKey, &u2, func(ctx context.Context) (out any, err error) {
 		v := &u2
 		v.FirstName = "abc"
+		v.LastName = "aaaa"
 
 		return nil, nil
-	}, time.Second)
+	}, time.Minute*1)
 
 	t.Logf("%+v", u2)
 }
 
+func TestGetFromSource(t *testing.T) {
+	var count int32
+
+	n := 10
+	c := &Cache{}
+	wg := &sync.WaitGroup{}
+	wg.Add(n)
+	for i := 0; i < n; i++ {
+		go func() {
+			c.getFromSource(context.Background(), defaultKey, func(ctx context.Context) (any, error) {
+				atomic.AddInt32(&count, 1)
+				time.Sleep(time.Second)
+
+				return "abc", nil
+			})
+
+			wg.Done()
+		}()
+	}
+
+	wg.Wait()
+	t.Log("count:", count)
+}
+
 func BenchmarkMemCache(b *testing.B) {
 }
 
 func load() (any, error) {
 	return nil, nil
 }
+
+func buildCache() *Cache {
+	c, err := NewCacheBuilder().
+		WithFreeCache(10 * 1024 * 1024).
+		WithRedis(RedisConfig{Addrs: []string{"192.168.2.222:6379"}, DB: 6, Password: "123456"}).
+		Build()
+
+	if err != nil {
+		panic(err)
+	}
+
+	return c
+}
diff --git a/cache/distributd_cache.go b/cache/distributd_cache.go
index 5d7929a..2b05b8e 100644
--- a/cache/distributd_cache.go
+++ b/cache/distributd_cache.go
@@ -4,7 +4,7 @@ import "time"
 
 type DistributdCache interface {
 	Get(key string, out any) error
-	Set(key string, value any, expiration time.Duration)
-	Delete(key string) error
+	Set(key string, value any, expiration time.Duration) error
+	Delete(key ...string) error
 	Ping() error
 }
diff --git a/cache/free_cache.go b/cache/free_cache.go
index 4e9a4ae..5a0d64c 100644
--- a/cache/free_cache.go
+++ b/cache/free_cache.go
@@ -4,6 +4,7 @@ import (
 	"errors"
 	"time"
 
+	"github.com/charlienet/go-mixed/bytesconv"
 	"github.com/coocood/freecache"
 )
 
@@ -37,10 +38,13 @@ func (c *freeCache) Set(key string, value []byte, d time.Duration) error {
 	return c.cache.Set([]byte(key), value, s)
 }
 
-func (c *freeCache) Delete(key string) error {
-	affected := c.cache.Del([]byte(key))
-	if !affected {
-		return errors.New("不存在")
+func (c *freeCache) Delete(keys ...string) error {
+	for _, k := range keys {
+		affected := c.cache.Del(bytesconv.StringToBytes(k))
+
+		if !affected {
+			return errors.New("不存在")
+		}
 	}
 
 	return nil
diff --git a/cache/mem.go b/cache/mem.go
index 5f8cadf..d06f58d 100644
--- a/cache/mem.go
+++ b/cache/mem.go
@@ -5,5 +5,5 @@ import "time"
 type MemCache interface {
 	Get(key string) ([]byte, error)
 	Set(key string, entry []byte, expire time.Duration) error
-	Delete(key string) error
+	Delete(key ...string) error
 }
diff --git a/cache/options.go b/cache/options.go
deleted file mode 100644
index cf46d3e..0000000
--- a/cache/options.go
+++ /dev/null
@@ -1,31 +0,0 @@
-package cache
-
-type option func(*Cache)
-
-type options struct {
-	Prefix string
-}
-
-func WithPrefix(prefix string) option {
-	return func(o *Cache) { o.prefix = prefix }
-}
-
-func WithDistributdCache(d DistributdCache) option {
-	return func(o *Cache) { o.distributdCache = d }
-}
-
-func WithBigCache(config *BigCacheConfig) option {
-	return func(o *Cache) {
-		c, err := NewBigCache(config)
-		_ = err
-		o.mem = c
-	}
-}
-
-func WithFreeCache(size int) option {
-	return func(o *Cache) { o.mem = NewFreeCache(size) }
-}
-
-func WithPublishSubscribe(p PublishSubscribe) option {
-	return func(o *Cache) {}
-}
diff --git a/cache/readme.md b/cache/readme.md
new file mode 100644
index 0000000..056e5a8
--- /dev/null
+++ b/cache/readme.md
@@ -0,0 +1,13 @@
+# 多级缓存模块
+
+1. 一级缓存可使用freecache或bigcache作为本地缓存，当数据在本地缓存不存在时，会向二级缓存请求数据
+2. 二级缓存使用redis作为缓存模块，当数据在二级缓存不存在时向资源请求数据。
+3. 更新数据时将二级分布式缓存中对应的数据删除，一级缓存使用订阅/发布机制进行删除。
+
+## 功能列表
+
+1. 支持自定义一级或二级缓存和订阅/发布机制。
+2. 缓存击穿；单机资源互斥锁，集群环境中每台机器只有一次请求到资源层，其它请求等待数据同步到缓存后获取数据。
+3. 缓存穿透；从数据源中未找到数据时，在缓存中缓存空值。
+4. 缓存雪崩；为防止缓存雪崩将资源放入缓存时，对过期时间添加一个随机过期时间，防止缓存同时过期。
+5. 自动续期；当访问二级缓存时对使用的资源进行延期。
diff --git a/cache/redis.go b/cache/redis.go
index 1bac3e7..db9896b 100644
--- a/cache/redis.go
+++ b/cache/redis.go
@@ -2,6 +2,7 @@ package cache
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"time"
 
@@ -11,8 +12,10 @@ import (
 	"github.com/go-redis/redis/v8"
 )
 
+const redisEmptyObject = "redis object not exist"
+
 type RedisConfig struct {
-	Perfix string // key perfix
+	Prefix string // key perfix
 	Addrs  []string
 
 	// Database to be selected after connecting to the server.
@@ -33,10 +36,10 @@ type RedisConfig struct {
 type redisClient struct {
 	client     redis.UniversalClient
 	emptyStamp string // 空对象标识，每个实例隔离
-	perfix     string // 缓存键前缀
+	prefix     string // 缓存键前缀
 }
 
-func NewRedis(c *RedisConfig) *redisClient {
+func NewRedis(c RedisConfig) *redisClient {
 	client := redis.NewUniversalClient(&redis.UniversalOptions{
 		Addrs:    c.Addrs,
 		DB:       c.DB,
@@ -46,35 +49,48 @@ func NewRedis(c *RedisConfig) *redisClient {
 
 	return &redisClient{
 		emptyStamp: fmt.Sprintf("redis-empty-%d-%s", time.Now().Unix(), rand.Hex.Generate(6)),
-		perfix:     c.Perfix,
+		prefix:     c.Prefix,
 		client:     client,
 	}
 }
 
 func (c *redisClient) Get(key string, out any) error {
-	cmd := c.client.Get(context.Background(), key)
-	str, err := cmd.Result()
+	val, err := c.client.Get(context.Background(), c.getKey(key)).Result()
+	if errors.Is(err, redis.Nil) {
+		return ErrNotFound
+	}
+
 	if err != nil {
 		return err
 	}
 
-	err = json.Unmarshal(bytesconv.StringToBytes(str), out)
-	return err
+	// redis 保存键为空值时返回键不存在错误
+	if val == redisEmptyObject {
+		return ErrNotFound
+	}
+
+	return json.Unmarshal(bytesconv.StringToBytes(val), out)
 }
 
-func (c *redisClient) Set(key string, value any, expiration time.Duration) {
+func (c *redisClient) Set(key string, value any, expiration time.Duration) error {
 	j, _ := json.Marshal(value)
-	c.client.Set(context.Background(), key, j, expiration)
+	return c.client.Set(context.Background(), c.getKey(key), j, expiration).Err()
 }
 
 func (c *redisClient) Exist(key string) (bool, error) {
-	return false, nil
+	val, err := c.client.Exists(context.Background(), c.getKey(key)).Result()
+	return val > 0, err
 }
 
-func (c *redisClient) Delete(key string) error {
-	cmd := c.client.Del(context.Background(), key)
-	if cmd.Err() != nil {
-		return cmd.Err()
+func (c *redisClient) Delete(key ...string) error {
+	keys := make([]string, 0, len(key))
+	for _, k := range key {
+		keys = append(keys, c.getKey(k))
+	}
+
+	_ , err := c.client.Del(context.Background(), keys...).Result()
+	if err != nil {
+		return err
 	}
 
 	return nil
@@ -84,3 +100,11 @@ func (c *redisClient) Ping() error {
 	_, err := c.client.Ping(context.Background()).Result()
 	return err
 }
+
+func (c *redisClient) getKey(key string) string {
+	if c.prefix != "" {
+		return c.prefix + ":" + key
+	}
+
+	return key
+}
diff --git a/crypto/rsa_test.go b/crypto/rsa_test.go
index 6feeb69..34458e9 100644
--- a/crypto/rsa_test.go
+++ b/crypto/rsa_test.go
@@ -127,3 +127,41 @@ func TestBadPubKey(t *testing.T) {
 
 	t.Log(rsa.Verify(msg, sign))
 }
+
+func TestRsa2048Sign(t *testing.T) {
+	key := `-----BEGIN RSA PRIVATE KEY-----
+MIIEpAIBAAKCAQEAzLWIDZbQUyQh1+SLWxE6pS3lttbHSZo+B5NRB6R5nonuAmyf
+XqQyJfDAvb2DTxXFL1y+VR2uEoQj/rg40PJ54ZnxQpEONEgSR7seIQr4xoe6h8SC
+W0TcSBIejkzPkGPkWjsXczV74yQxz3+23SGSWiojEeWgjvQ6oI7SUC+yPb9UvaAx
+GwMFCc0H5opSHW3ZVPdU6Q6bLK7QZXhY5CstXcxJ+bFQq3MPf+Dv5pB4qSR8PX02
+1pI/gmraEpbwU2Wqe+V07vA9ougJ/ON/xZtvuVT1xW3wazjC/QeBdWOjRhUsk611
+mo0retZ7nv72Tln5zBX8qPlJYNX5FQdv+LmRLwIDAQABAoIBAQC/F+6rkM9j7WTS
+XnxgRJMUQuYfahua76tb8v8/PSBzCJrwFGopNOnDVRz3goOjPdVWwyLB3fTzP/tB
++sK++rsgCE6ZL0OtNmIqJ9iWS+GzolxUBPMTNBLWDGQNvlI8naM7P9JCL/k4Lj95
+TeVsQ7yVAqS+PjdFe2OHIgvd4shmrhttKYelXmjhoLi3SCIzU4Uj1RfBSzUM4Ffp
+4FeuYCCxf2BSnweOa0DNREGlubMxcd+RQAChnDUbgdlpwjFJUlOmFYBCMn7U8ypG
+PP3Z3/JI3glElVR7FQHS2yGvO4K9viHNr8eeDczKM+8VDs6ZT2ljpSXFei5Kv+Dv
+tru4LlDxAoGBAOp8IarOlJnkDY4qoa0aN3ql0Z9yjCl7xy+7RytUjJvVLJbGkUpp
+u6B+PJuVxa+OU4PKNSubU2gIcr+QaIo0tVyjZy2+zgSdddJLLc6q2wv7RqIsXdbk
+PctfBAW+icu+ZSANyuI5bn220tAwQ9UO1F4bi/u/H64s6c5XN+i+9xn7AoGBAN99
+/WmOOnRJSNOTUMHjT5NNi/rh4UwSajB8S5nPsYUVB9Yj8CLbICzY3RWQkz6xbdoZ
+e86IVDrcGa0cPWZyw/ecDCGt6JbfsYpzFmD1iQtrtBU0SfvZV47uAlN5d7CtAGKS
+82rGCTNI+E65iKQY6D4WBygHFU2vX41OHFdq/pNdAoGBAIQf7diRDqqoFftFilQ/
+sYMqbDOsF85IMLR0kmWX/qLQO4+506Rab56/gucoPXvudqCMD+nCW/0CxaWreTxm
+9sp8SGc+XFe9YeZc9jK9ky/tJp+64CV19lvh7iJOetaTMegd3XQbaGbt3Vvx1kb3
+VDKy0u3Hg9Jg/F2IR7id4h6BAoGACs2sUk3txXFFc/TLEpRKZHR7L8V7fpHlUDKx
+9N11V1mM520VTpoJFCHnjgNPGti41rIkqfctGytIknWrAijKEE4ayAYAGEr36hlm
+G4nC9ipeqie868+1y9L1idN1VbUHL7yqx56LE0+TsTqGwGfz0gx+jBDLltXDaLE9
+7XvekoECgYAc0QmX3E7NV/Ya41M1PAHA9/1caGa4nujKFtrKFUsTIhBuHn41F4aJ
+JHIbDvh5OpqwlbdjMDT1JD8V0SqIKBgV0d//E7FySfuA1mW6AcXaf/AZavpG9r45
+rwxHC2OVdHfXo5MH7aI9Wax0CFdu2aZOEHLRFQE2KSXKY4/TcRdFpw==
+-----END RSA PRIVATE KEY-----
+`
+	v1 := []byte(`6217690700372158001X000000100TEST11573462713560839b241a0c54022019-11-11 17:01:211.00IACSPAY1911111701171012907901`)
+
+	r, _ := crypto.NewRsa(crypto.SHA1, crypto.ParsePKCS1PrivateKey([]byte(key)))
+	ret, err := r.Sign(v1)
+	t.Log(err)
+
+	t.Log("ret:", base64.StdEncoding.EncodeToString(ret))
+}
diff --git a/go.mod b/go.mod
index 6f53c25..a940fbb 100644
--- a/go.mod
+++ b/go.mod
@@ -17,22 +17,20 @@ require (
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
 
 require (
-	github.com/allegro/bigcache v1.2.1
+	github.com/allegro/bigcache/v3 v3.0.2
 	github.com/antonfisher/nested-logrus-formatter v1.3.1
 	github.com/coocood/freecache v1.2.1
-	github.com/go-playground/assert/v2 v2.0.1
 	github.com/go-redis/redis/v8 v8.11.5
 	github.com/pkg/errors v0.9.1
 	github.com/sirupsen/logrus v1.8.1
-	github.com/stretchr/testify v1.7.1
-	golang.org/x/crypto v0.0.0-20220411220226-7b82a4e95df4 // indirect
-	golang.org/x/exp v0.0.0-20220414153411-bcd21879b8fd
-	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
-	golang.org/x/sys v0.0.0-20220412211240-33da011f77ad // indirect
+	github.com/stretchr/testify v1.7.2
+	golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e // indirect
+	golang.org/x/exp v0.0.0-20220608143224-64259d1afd70
+	golang.org/x/sys v0.0.0-20220608164250-635b8c9b7f68 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0
 
 )
diff --git a/go.sum b/go.sum
index 47053d0..c69f30c 100644
--- a/go.sum
+++ b/go.sum
@@ -1,8 +1,8 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/allegro/bigcache v1.2.1 h1:hg1sY1raCwic3Vnsvje6TT7/pnZba83LeFck5NrFKSc=
-github.com/allegro/bigcache v1.2.1/go.mod h1:Cb/ax3seSYIx7SuZdm2G2xzfwmv3TPSk2ucNfQESPXM=
+github.com/allegro/bigcache/v3 v3.0.2 h1:AKZCw+5eAaVyNTBmI2fgyPVJhHkdWder3O9IrprcQfI=
+github.com/allegro/bigcache/v3 v3.0.2/go.mod h1:aPyh7jEvrog9zAwx5N7+JUQX5dZTSGpxF1LAR4dr35I=
 github.com/antonfisher/nested-logrus-formatter v1.3.1 h1:NFJIr+pzwv5QLHTPyKz9UMEoHck02Q9L0FP13b/xSbQ=
 github.com/antonfisher/nested-logrus-formatter v1.3.1/go.mod h1:6WTfyWFkBc9+zyBaKIqRrg/KwMqBbodBjgbHjDz7zjA=
 github.com/bits-and-blooms/bitset v1.2.2 h1:J5gbX05GpMdBjCvQ9MteIg2KKDExr7DrgK+Yc15FvIk=
@@ -23,8 +23,6 @@ github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymF
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
-github.com/go-playground/assert/v2 v2.0.1 h1:MsBgLAaY856+nPRTKrp3/OZK38U/wa0CcBYNjji3q3A=
-github.com/go-playground/assert/v2 v2.0.1/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
 github.com/go-redis/redis/v8 v8.11.5 h1:AcZZR7igkdvfVmQTPnu9WE37LRrO/YrBH5zWyjDC0oI=
 github.com/go-redis/redis/v8 v8.11.5/go.mod h1:gREzHqY1hg6oD9ngVRbLStwAWKhA0FEgq8Jd4h5lpwo=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
@@ -43,6 +41,8 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
+github.com/json-iterator/go v1.1.6 h1:MrUvLMLTMxbqFJ9kzlvat/rYZqZnW3u4wkLzWTaFwKs=
+github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
 github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
 github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
@@ -67,18 +67,18 @@ github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
-github.com/stretchr/testify v1.7.1 h1:5TQK59W5E3v0r2duFAb7P95B6hEeOyEnHRa8MjYSMTY=
-github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.7.2 h1:4jaiDzPyXQvSd7D0EjG45355tLlV3VOECpq10pLC+8s=
+github.com/stretchr/testify v1.7.2/go.mod h1:R6va5+xMeoiuVRoj+gSkQ7d3FALtqAAGI1FQKckRals=
 github.com/tjfoc/gmsm v1.4.1 h1:aMe1GlZb+0bLjn+cKTPEvvn9oUEBlJitaZiiBwsbgho=
 github.com/tjfoc/gmsm v1.4.1/go.mod h1:j4INPkHWMrhJb38G+J6W4Tw0AbuN8Thu3PbdVYhVcTE=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20201012173705-84dcc777aaee/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.0.0-20220411220226-7b82a4e95df4 h1:kUhD7nTDoI3fVd9G4ORWrbV5NY0liEs/Jg2pv5f+bBA=
-golang.org/x/crypto v0.0.0-20220411220226-7b82a4e95df4/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e h1:T8NU3HyQ8ClP4SEE+KbFlg6n0NhuTsN4MyznaarGsZM=
+golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/exp v0.0.0-20220414153411-bcd21879b8fd h1:zVFyTKZN/Q7mNRWSs1GOYnHM9NiFSJ54YVRsD0rNWT4=
-golang.org/x/exp v0.0.0-20220414153411-bcd21879b8fd/go.mod h1:lgLbSvA5ygNOMpwM/9anMpWVlVJ7Z+cHWq/eFuinpGE=
+golang.org/x/exp v0.0.0-20220608143224-64259d1afd70 h1:8uGxpY2cLF9H/NSHUiEWUIBZqIcsMzMWIMPCCUkyYgc=
+golang.org/x/exp v0.0.0-20220608143224-64259d1afd70/go.mod h1:yh0Ynu2b5ZUe3MQfp2nM0ecK7wsgouWTDN0FNeJuIys=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
@@ -93,15 +93,13 @@ golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAG
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
-golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20220412211240-33da011f77ad h1:ntjMns5wyP/fN65tdBD4g8J5w8n015+iIIs9rtjXkY0=
-golang.org/x/sys v0.0.0-20220412211240-33da011f77ad/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220608164250-635b8c9b7f68 h1:z8Hj/bl9cOV2grsOpEaQFUaly0JWN3i97mo3jXKJNp0=
+golang.org/x/sys v0.0.0-20220608164250-635b8c9b7f68/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
@@ -131,8 +129,7 @@ gopkg.in/natefinch/lumberjack.v2 v2.0.0 h1:1Lc07Kr7qY4U2YPouBjpCLxpiyxIVoxqXgkXL
 gopkg.in/natefinch/lumberjack.v2 v2.0.0/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
diff --git a/locker/rw_locker.go b/locker/rw_locker.go
index 7370b64..73158df 100644
--- a/locker/rw_locker.go
+++ b/locker/rw_locker.go
@@ -2,8 +2,6 @@ package locker
 
 import "sync"
 
-var _ RWLocker = &sync.RWMutex{}
-
 func NewRWLocker() *sync.RWMutex {
 	return &sync.RWMutex{}
 }
diff --git a/locker/source_locker.go b/locker/source_locker.go
index 82d214a..34bc0a3 100644
--- a/locker/source_locker.go
+++ b/locker/source_locker.go
@@ -1,21 +1,54 @@
 package locker
 
-import "sync"
+import (
+	"fmt"
+)
 
-var locks = make(map[string]sync.Locker)
+// 资源锁
+type SourceLocker struct {
+	m     RWLocker
+	locks map[string]Locker
+}
+
+func NewSourceLocker() *SourceLocker {
+	return &SourceLocker{
+		m:     NewRWLocker(),
+		locks: make(map[string]Locker),
+	}
+}
+
+func (s *SourceLocker) Lock(key string) {
+	s.m.RLock()
+	l, ok := s.locks[key]
+
+	if ok {
+		s.m.RUnlock()
 
-func Lock(name string) {
-	if l, ok := locks[name]; ok {
 		l.Lock()
-	}
+		fmt.Println("加锁")
+	} else {
+		s.m.RUnlock()
 
-	new := &sync.Mutex{}
-	locks[name] = new
-	new.Lock()
+		s.m.Lock()
+		new := NewLocker()
+		s.locks[key] = new
+		s.m.Unlock()
+
+		new.Lock()
+		fmt.Println("初始加锁")
+	}
 }
 
-func Unlock(name string) {
-	if l, ok := locks[name]; ok {
+func (s *SourceLocker) Unlock(key string) {
+	s.m.Lock()
+	if l, ok := s.locks[key]; ok {
 		l.Unlock()
+		// delete(s.locks, key)
+		fmt.Println("解锁")
 	}
+	s.m.Unlock()
+}
+
+func (s *SourceLocker) TryLock(key string) bool {
+	return false
 }
diff --git a/locker/source_locker_test.go b/locker/source_locker_test.go
new file mode 100644
index 0000000..e0674c5
--- /dev/null
+++ b/locker/source_locker_test.go
@@ -0,0 +1,41 @@
+package locker
+
+import (
+	"sync"
+	"testing"
+)
+
+var sourcekey = "u-0001"
+
+func TestSourceLocker(t *testing.T) {
+	l := NewSourceLocker()
+
+	c := 5
+	n := 0
+	wg := new(sync.WaitGroup)
+	wg.Add(c)
+
+	for i := 0; i < c; i++ {
+		go func() {
+			defer wg.Done()
+
+			l.Lock(sourcekey)
+			n++
+			l.Unlock(sourcekey)
+		}()
+	}
+
+	wg.Wait()
+	t.Log("n:", n)
+}
+
+func BenchmarkSourceLocker(b *testing.B) {
+	l := NewSourceLocker()
+
+	b.RunParallel(func(p *testing.PB) {
+		for p.Next() {
+			l.Lock(sourcekey)
+			l.Unlock(sourcekey)
+		}
+	})
+}
diff --git a/locker/spin_locker_test.go b/locker/spin_locker_test.go
new file mode 100644
index 0000000..229d615
--- /dev/null
+++ b/locker/spin_locker_test.go
@@ -0,0 +1,31 @@
+package locker
+
+import (
+	"sync"
+	"testing"
+)
+
+func TestSpinLock(t *testing.T) {
+	l := NewSpinLocker()
+
+	n := 10
+	c := 0
+
+	wg := new(sync.WaitGroup)
+	wg.Add(n)
+	for i := 0; i < n; i++ {
+		go func() {
+			defer wg.Done()
+
+			l.Lock()
+			c++
+			l.Unlock()
+		}()
+	}
+
+	wg.Wait()
+
+	l.Lock()
+	t.Log(c)
+	l.Unlock()
+}
diff --git a/maps/concurrence_test.go b/maps/concurrence_test.go
index 25ad3ab..b0f2f78 100644
--- a/maps/concurrence_test.go
+++ b/maps/concurrence_test.go
@@ -2,7 +2,9 @@ package maps
 
 import (
 	"fmt"
+	"strconv"
 	"sync"
+	"sync/atomic"
 	"testing"
 	"time"
 )
@@ -65,3 +67,57 @@ func BenchmarkMap(b *testing.B) {
 		}
 	})
 }
+
+func BenchmarkLoadStore(b *testing.B) {
+	ms := []Map[string, string]{
+		NewRWMap[string, string](),
+		NewConcurrentMap[string, string](),
+		NewHashMap[string, string]().Synchronize(),
+		NewHashMap[string, string](),
+	}
+
+	for _, m := range ms {
+		var i int64
+		b.Run(fmt.Sprintf("%T", m), func(b *testing.B) {
+			for n := 0; n < b.N; n++ {
+				gid := int(atomic.AddInt64(&i, 1) - 1)
+
+				if gid == 0 {
+					m.Set("0", strconv.Itoa(n))
+				} else {
+					m.Get("0")
+				}
+			}
+		})
+	}
+}
+
+func BenchmarkLoadStoreCollision(b *testing.B) {
+	ms := []Map[string, string]{
+		NewRWMap[string, string](),
+		NewConcurrentMap[string, string](),
+		NewHashMap[string, string]().Synchronize(),
+		// &sync.Map{},
+	}
+
+	// 测试对于同一个 key 的 n-1 并发读和 1 并发写的性能
+	for _, m := range ms {
+		b.Run(fmt.Sprintf("%T", m), func(b *testing.B) {
+			var i int64
+			b.RunParallel(func(pb *testing.PB) {
+				// 记录并发执行的 goroutine id
+				gid := int(atomic.AddInt64(&i, 1) - 1)
+
+				if gid == 0 {
+					for i := 0; pb.Next(); i++ {
+						m.Set("0", strconv.Itoa(i))
+					}
+				} else {
+					for pb.Next() {
+						m.Get("0")
+					}
+				}
+			})
+		})
+	}
+}
diff --git a/pool/pool_test.go b/pool/pool_test.go
index 12b8a63..e32ceac 100644
--- a/pool/pool_test.go
+++ b/pool/pool_test.go
@@ -33,6 +33,21 @@ func TestPoolSize(t *testing.T) {
 	}
 }
 
+func TestBytesPool(t *testing.T) {
+	var n = 0
+	p := pool.NewPoolWithNew(100, func() []byte {
+		t.Log("new")
+		n++
+		return make([]byte, 100, 100)
+	})
+
+	for i := 0; i < 1000; i++ {
+		go p.Put(p.Get())
+	}
+
+	t.Log("new count:", n)
+}
+
 func TestPut(t *testing.T) {
 	p := pool.NewPool[PoolObject](10)
 	for i := 0; i < 15; i++ {
@@ -64,3 +79,7 @@ func BenchmarkPoolNew(b *testing.B) {
 		}
 	})
 }
+
+func TestNewFunc(t *testing.T) {
+
+}
diff --git a/rand/rand_test.go b/rand/rand_test.go
index e82862b..0523658 100644
--- a/rand/rand_test.go
+++ b/rand/rand_test.go
@@ -3,6 +3,7 @@ package rand_test
 import (
 	"bytes"
 	"fmt"
+	"math"
 	"testing"
 
 	"github.com/charlienet/go-mixed/rand"
@@ -51,6 +52,7 @@ func TestRange(t *testing.T) {
 
 func TestFastrand(t *testing.T) {
 	t.Log(int(^uint(0) >> 1))
+	t.Log(math.MaxInt)
 
 	for _, g := range generators {
 		var max32 int32 = 1000
diff --git a/tests/string_test.go b/tests/string_test.go
new file mode 100644
index 0000000..9e85aa0
--- /dev/null
+++ b/tests/string_test.go
@@ -0,0 +1,39 @@
+package tests
+
+import (
+	"bytes"
+	"fmt"
+	"testing"
+)
+
+func BenchmarkStringSplice(b *testing.B) {
+	userID := "aaaaa"
+	orderID := "bbccc"
+
+	b.Run("BenchmarkPlus", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			logStr := "userid :" + userID + "; orderid:" + orderID
+			_ = logStr
+		}
+	})
+
+	b.Run("BenchmarkPrint", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			logStr := fmt.Sprintf("userid: %v; orderid: %v", userID, orderID)
+			_ = logStr
+		}
+	})
+
+	b.Run("BenchmarkBytesBuffer", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			var sb bytes.Buffer
+			sb.WriteString("userid :")
+			sb.WriteString(userID)
+			sb.WriteString("; orderid:")
+			sb.WriteString(orderID)
+
+			logStr := sb.String()
+			_ = logStr
+		}
+	})
+}