diff --git a/config.go b/config.go
index 471bdb5..17b29d0 100644
--- a/config.go
+++ b/config.go
@@ -8,6 +8,8 @@ import (
 	"time"
 
 	"github.com/alecthomas/units"
+	"gopkg.d7z.net/gitea-pages/pkg/middleware/cache"
+	"gopkg.d7z.net/gitea-pages/pkg/middleware/config"
 
 	"github.com/pkg/errors"
 	"go.uber.org/zap"
@@ -95,9 +97,9 @@ func (c *Config) NewPageServerOptions() (*pkg.ServerOptions, error) {
 		EnableProxy:         c.Proxy.Enable,
 		DefaultErrorHandler: c.ErrorHandler,
 		StaticDir:           c.StaticDir,
-		Cache:               utils.NewCacheMemory(int(cacheMaxSize), int(cacheMaxSize)),
+		Cache:               cache.NewCacheMemory(int(cacheMaxSize), int(cacheMaxSize)),
 	}
-	cfg, err := utils.NewAutoConfig(c.Cache.Storage)
+	cfg, err := config.NewAutoConfig(c.Cache.Storage)
 	if err != nil {
 		return nil, errors.Wrapf(err, "failed to init config memory")
 	}
diff --git a/pkg/core/alias.go b/pkg/core/alias.go
index e00fff3..601601e 100644
--- a/pkg/core/alias.go
+++ b/pkg/core/alias.go
@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"fmt"
 
-	"gopkg.d7z.net/gitea-pages/pkg/utils"
+	"gopkg.d7z.net/gitea-pages/pkg/middleware/config"
 )
 
 type Alias struct {
@@ -15,10 +15,10 @@ type Alias struct {
 }
 
 type DomainAlias struct {
-	config utils.KVConfig
+	config config.KVConfig
 }
 
-func NewDomainAlias(config utils.KVConfig) *DomainAlias {
+func NewDomainAlias(config config.KVConfig) *DomainAlias {
 	return &DomainAlias{config: config}
 }
 
@@ -55,9 +55,9 @@ func (a *DomainAlias) Bind(ctx context.Context, domains []string, owner, repo, b
 	}
 	aliasMetaRaw, _ := json.Marshal(aliasMeta)
 	domainsRaw, _ := json.Marshal(domains)
-	_ = a.config.Put(ctx, rKey, string(domainsRaw), utils.TtlKeep)
+	_ = a.config.Put(ctx, rKey, string(domainsRaw), config.TtlKeep)
 	for _, domain := range domains {
-		if err := a.config.Put(ctx, "domain/alias/"+domain, string(aliasMetaRaw), utils.TtlKeep); err != nil {
+		if err := a.config.Put(ctx, "domain/alias/"+domain, string(aliasMetaRaw), config.TtlKeep); err != nil {
 			return err
 		}
 	}
diff --git a/pkg/core/backend.go b/pkg/core/backend.go
index 196cde4..82acb08 100644
--- a/pkg/core/backend.go
+++ b/pkg/core/backend.go
@@ -14,6 +14,8 @@ import (
 
 	"github.com/pkg/errors"
 	"go.uber.org/zap"
+	"gopkg.d7z.net/gitea-pages/pkg/middleware/cache"
+	"gopkg.d7z.net/gitea-pages/pkg/middleware/config"
 
 	"gopkg.d7z.net/gitea-pages/pkg/utils"
 )
@@ -35,7 +37,7 @@ type Backend interface {
 
 type CacheBackend struct {
 	backend Backend
-	config  utils.KVConfig
+	config  config.KVConfig
 	ttl     time.Duration
 }
 
@@ -43,7 +45,7 @@ func (c *CacheBackend) Close() error {
 	return c.backend.Close()
 }
 
-func NewCacheBackend(backend Backend, config utils.KVConfig, ttl time.Duration) *CacheBackend {
+func NewCacheBackend(backend Backend, config config.KVConfig, ttl time.Duration) *CacheBackend {
 	return &CacheBackend{backend: backend, config: config, ttl: ttl}
 }
 
@@ -113,12 +115,12 @@ func (c *CacheBackend) Open(ctx context.Context, client *http.Client, owner, rep
 
 type CacheBackendBlobReader struct {
 	client  *http.Client
-	cache   utils.Cache
+	cache   cache.Cache
 	base    Backend
 	maxSize int
 }
 
-func NewCacheBackendBlobReader(client *http.Client, base Backend, cache utils.Cache, maxCacheSize int) *CacheBackendBlobReader {
+func NewCacheBackendBlobReader(client *http.Client, base Backend, cache cache.Cache, maxCacheSize int) *CacheBackendBlobReader {
 	return &CacheBackendBlobReader{client: client, base: base, cache: cache, maxSize: maxCacheSize}
 }
 
@@ -173,7 +175,7 @@ func (c *CacheBackendBlobReader) Open(ctx context.Context, owner, repo, commit,
 	if err = c.cache.Put(key, bytes.NewBuffer(allBytes)); err != nil {
 		zap.L().Warn("缓存归档失败", zap.Error(err), zap.Int("Size", len(allBytes)), zap.Int("MaxSize", c.maxSize))
 	}
-	return &utils.CacheContent{
+	return &cache.CacheContent{
 		ReadSeekCloser: utils.NopCloser{
 			ReadSeeker: bytes.NewReader(allBytes),
 		},
diff --git a/pkg/core/domain.go b/pkg/core/domain.go
index f750441..30cd998 100644
--- a/pkg/core/domain.go
+++ b/pkg/core/domain.go
@@ -6,8 +6,7 @@ import (
 	"strings"
 
 	"github.com/pkg/errors"
-
-	"gopkg.d7z.net/gitea-pages/pkg/utils"
+	"gopkg.d7z.net/gitea-pages/pkg/middleware/config"
 
 	"go.uber.org/zap"
 )
@@ -20,7 +19,7 @@ type PageDomain struct {
 	defaultBranch string
 }
 
-func NewPageDomain(meta *ServerMeta, config utils.KVConfig, baseDomain, defaultBranch string) *PageDomain {
+func NewPageDomain(meta *ServerMeta, config config.KVConfig, baseDomain, defaultBranch string) *PageDomain {
 	return &PageDomain{
 		baseDomain:    baseDomain,
 		defaultBranch: defaultBranch,
diff --git a/pkg/core/meta.go b/pkg/core/meta.go
index 104c766..66cc36b 100644
--- a/pkg/core/meta.go
+++ b/pkg/core/meta.go
@@ -13,6 +13,7 @@ import (
 	"time"
 
 	"go.uber.org/zap"
+	"gopkg.d7z.net/gitea-pages/pkg/middleware/config"
 	"gopkg.in/yaml.v3"
 
 	"github.com/gobwas/glob"
@@ -30,13 +31,13 @@ type ServerMeta struct {
 	Domain string
 
 	client *http.Client
-	cache  utils.KVConfig
+	cache  config.KVConfig
 	ttl    time.Duration
 
 	locker *utils.Locker
 }
 
-func NewServerMeta(client *http.Client, backend Backend, kv utils.KVConfig, domain string, ttl time.Duration) *ServerMeta {
+func NewServerMeta(client *http.Client, backend Backend, kv config.KVConfig, domain string, ttl time.Duration) *ServerMeta {
 	return &ServerMeta{backend, domain, client, kv, ttl, utils.NewLocker()}
 }
 
diff --git a/pkg/middleware/cache/cache.go b/pkg/middleware/cache/cache.go
new file mode 100644
index 0000000..ed63c6f
--- /dev/null
+++ b/pkg/middleware/cache/cache.go
@@ -0,0 +1,48 @@
+package cache
+
+import (
+	"io"
+	"sync"
+	"time"
+
+	"github.com/pkg/errors"
+)
+
+type CacheContent struct {
+	io.ReadSeekCloser
+	Length       int
+	LastModified time.Time
+}
+
+func (c *CacheContent) ReadToString() (string, error) {
+	all, err := io.ReadAll(c)
+	if err != nil {
+		return "", err
+	}
+	return string(all), nil
+}
+
+type Cache interface {
+	Put(key string, reader io.Reader) error
+	// Get return CacheContent or nil when put nil io.reader
+	Get(key string) (*CacheContent, error)
+	Delete(pattern string) error
+	io.Closer
+}
+
+var ErrCacheOutOfMemory = errors.New("内容无法被缓存，超过最大限定值")
+
+// TODO: 优化锁结构
+// 复杂场景请使用其他缓存服务
+
+type CacheMemory struct {
+	l          sync.RWMutex
+	data       map[string]*[]byte
+	lastModify map[string]time.Time
+	sizeGlobal int
+	sizeItem   int
+
+	current int
+	cache   []byte
+	ordered []string
+}
diff --git a/pkg/utils/cache.go b/pkg/middleware/cache/cache_memory.go
similarity index 73%
rename from pkg/utils/cache.go
rename to pkg/middleware/cache/cache_memory.go
index f74e88d..adf7bca 100644
--- a/pkg/utils/cache.go
+++ b/pkg/middleware/cache/cache_memory.go
@@ -1,4 +1,4 @@
-package utils
+package cache
 
 import (
 	"bytes"
@@ -8,48 +8,9 @@ import (
 	"sync"
 	"time"
 
-	"github.com/pkg/errors"
+	"gopkg.d7z.net/gitea-pages/pkg/utils"
 )
 
-type CacheContent struct {
-	io.ReadSeekCloser
-	Length       int
-	LastModified time.Time
-}
-
-func (c *CacheContent) ReadToString() (string, error) {
-	all, err := io.ReadAll(c)
-	if err != nil {
-		return "", err
-	}
-	return string(all), nil
-}
-
-type Cache interface {
-	Put(key string, reader io.Reader) error
-	// Get return CacheContent or nil when put nil io.reader
-	Get(key string) (*CacheContent, error)
-	Delete(pattern string) error
-	io.Closer
-}
-
-var ErrCacheOutOfMemory = errors.New("内容无法被缓存，超过最大限定值")
-
-// TODO: 优化锁结构
-// 复杂场景请使用其他缓存服务
-
-type CacheMemory struct {
-	l          sync.RWMutex
-	data       map[string]*[]byte
-	lastModify map[string]time.Time
-	sizeGlobal int
-	sizeItem   int
-
-	current int
-	cache   []byte
-	ordered []string
-}
-
 func NewCacheMemory(maxUsage, maxGlobalUsage int) *CacheMemory {
 	return &CacheMemory{
 		data:       make(map[string]*[]byte),
@@ -139,7 +100,7 @@ func (c *CacheMemory) Get(key string) (*CacheContent, error) {
 		}
 
 		return &CacheContent{
-			ReadSeekCloser: NopCloser{
+			ReadSeekCloser: utils.NopCloser{
 				bytes.NewReader(*i),
 			},
 			Length:       len(*i),
@@ -176,9 +137,3 @@ func (c *CacheMemory) Close() error {
 	c.current = 0
 	return nil
 }
-
-type NopCloser struct {
-	io.ReadSeeker
-}
-
-func (NopCloser) Close() error { return nil }
diff --git a/pkg/utils/cache_test.go b/pkg/middleware/cache/cache_test.go
similarity index 99%
rename from pkg/utils/cache_test.go
rename to pkg/middleware/cache/cache_test.go
index ba0c558..a3e5be2 100644
--- a/pkg/utils/cache_test.go
+++ b/pkg/middleware/cache/cache_test.go
@@ -1,4 +1,4 @@
-package utils
+package cache
 
 import (
 	"fmt"
diff --git a/pkg/utils/config.go b/pkg/middleware/config/config.go
similarity index 98%
rename from pkg/utils/config.go
rename to pkg/middleware/config/config.go
index 782219a..9b8c852 100644
--- a/pkg/utils/config.go
+++ b/pkg/middleware/config/config.go
@@ -1,4 +1,4 @@
-package utils
+package config
 
 import (
 	"context"
diff --git a/pkg/utils/config_memory.go b/pkg/middleware/config/config_memory.go
similarity index 99%
rename from pkg/utils/config_memory.go
rename to pkg/middleware/config/config_memory.go
index 7a6fae3..db4e749 100644
--- a/pkg/utils/config_memory.go
+++ b/pkg/middleware/config/config_memory.go
@@ -1,4 +1,4 @@
-package utils
+package config
 
 import (
 	"context"
diff --git a/pkg/utils/config_redis.go b/pkg/middleware/config/config_redis.go
similarity index 98%
rename from pkg/utils/config_redis.go
rename to pkg/middleware/config/config_redis.go
index 453c653..09d8497 100644
--- a/pkg/utils/config_redis.go
+++ b/pkg/middleware/config/config_redis.go
@@ -1,4 +1,4 @@
-package utils
+package config
 
 import (
 	"context"
diff --git a/pkg/server.go b/pkg/server.go
index 5e8aad5..84c4aa4 100644
--- a/pkg/server.go
+++ b/pkg/server.go
@@ -17,6 +17,8 @@ import (
 	"time"
 
 	"github.com/google/uuid"
+	"gopkg.d7z.net/gitea-pages/pkg/middleware/cache"
+	"gopkg.d7z.net/gitea-pages/pkg/middleware/config"
 
 	"github.com/pkg/errors"
 	"go.uber.org/zap"
@@ -34,8 +36,8 @@ type ServerOptions struct {
 	Domain        string
 	DefaultBranch string
 
-	KVConfig utils.KVConfig
-	Cache    utils.Cache
+	KVConfig config.KVConfig
+	Cache    cache.Cache
 
 	MaxCacheSize int
 
@@ -52,12 +54,12 @@ type ServerOptions struct {
 }
 
 func DefaultOptions(domain string) ServerOptions {
-	configMemory, _ := utils.NewAutoConfig("")
+	configMemory, _ := config.NewAutoConfig("")
 	return ServerOptions{
 		Domain:        domain,
 		DefaultBranch: "gh-pages",
 		KVConfig:      configMemory,
-		Cache:         utils.NewCacheMemory(1024*1024*10, int(memory.FreeMemory()/3*2)),
+		Cache:         cache.NewCacheMemory(1024*1024*10, int(memory.FreeMemory()/3*2)),
 		MaxCacheSize:  1024 * 1024 * 10,
 		HttpClient:    http.DefaultClient,
 		MetaTTL:       time.Minute,
@@ -235,7 +237,7 @@ func (s *Server) Serve(writer http.ResponseWriter, request *http.Request) error
 		render = nil
 	}
 	defer result.Close()
-	if reader, ok := result.(*utils.CacheContent); ok {
+	if reader, ok := result.(*cache.CacheContent); ok {
 		writer.Header().Add("X-Cache", "HIT")
 		writer.Header().Set("Content-Type", mime.TypeByExtension(filepath.Ext(fileName)))
 		writer.Header().Add("Cache-Control", "public, max-age=86400")
diff --git a/pkg/utils/closer.go b/pkg/utils/closer.go
new file mode 100644
index 0000000..31c33fe
--- /dev/null
+++ b/pkg/utils/closer.go
@@ -0,0 +1,9 @@
+package utils
+
+import "io"
+
+type NopCloser struct {
+	io.ReadSeeker
+}
+
+func (NopCloser) Close() error { return nil }