diff --git a/internal/core/assets.go b/internal/core/assets.go
deleted file mode 100644
index a0e4eea6..00000000
--- a/internal/core/assets.go
+++ /dev/null
@@ -1,5 +0,0 @@
-package core
-
-type AttachmentCheckService interface {
-	Check(uri string) error
-}
diff --git a/internal/core/authority.go b/internal/core/authority.go
index b27db923..0b60d05c 100644
--- a/internal/core/authority.go
+++ b/internal/core/authority.go
@@ -42,6 +42,7 @@ type Action struct {
 	UserId int64
 }
 
+// AuthorizationManageService 授权管理服务
 type AuthorizationManageService interface {
 	IsAllow(user *model.User, action *Action) bool
 	GetFriendFilter(userId int64) FriendFilter
diff --git a/internal/core/cache.go b/internal/core/cache.go
index 7ea40217..ecbc8e35 100644
--- a/internal/core/cache.go
+++ b/internal/core/cache.go
@@ -32,7 +32,6 @@ func (a IndexActionT) String() string {
 
 // CacheIndexService cache index service interface
 type CacheIndexService interface {
-	VersionInfo
 	IndexPostsService
 
 	SendAction(active IndexActionT)
diff --git a/internal/core/comments.go b/internal/core/comments.go
new file mode 100644
index 00000000..9be29ed3
--- /dev/null
+++ b/internal/core/comments.go
@@ -0,0 +1,24 @@
+package core
+
+import (
+	"github.com/rocboss/paopao-ce/internal/model"
+)
+
+// CommentService 评论检索服务
+type CommentService interface {
+	GetComments(conditions *model.ConditionsT, offset, limit int) ([]*model.Comment, error)
+	GetCommentByID(id int64) (*model.Comment, error)
+	GetCommentCount(conditions *model.ConditionsT) (int64, error)
+	GetCommentReplyByID(id int64) (*model.CommentReply, error)
+	GetCommentContentsByIDs(ids []int64) ([]*model.CommentContent, error)
+	GetCommentRepliesByID(ids []int64) ([]*model.CommentReplyFormated, error)
+}
+
+// CommentManageService 评论管理服务
+type CommentManageService interface {
+	DeleteComment(comment *model.Comment) error
+	CreateComment(comment *model.Comment) (*model.Comment, error)
+	CreateCommentReply(reply *model.CommentReply) (*model.CommentReply, error)
+	DeleteCommentReply(reply *model.CommentReply) error
+	CreateCommentContent(content *model.CommentContent) (*model.CommentContent, error)
+}
diff --git a/internal/core/core.go b/internal/core/core.go
index 934a77e2..0c86d5ed 100644
--- a/internal/core/core.go
+++ b/internal/core/core.go
@@ -1,77 +1,34 @@
 package core
 
-import (
-	"github.com/rocboss/paopao-ce/internal/model"
-)
-
-// DataService data service interface that process data related logic on database
+// DataService 数据服务集成
 type DataService interface {
+	// 钱包服务
 	WalletService
-	IndexPostsService
 
-	GetComments(conditions *model.ConditionsT, offset, limit int) ([]*model.Comment, error)
-	GetCommentByID(id int64) (*model.Comment, error)
-	DeleteComment(comment *model.Comment) error
-	GetCommentCount(conditions *model.ConditionsT) (int64, error)
-	CreateComment(comment *model.Comment) (*model.Comment, error)
-	CreateCommentReply(reply *model.CommentReply) (*model.CommentReply, error)
-	GetCommentReplyByID(id int64) (*model.CommentReply, error)
-	DeleteCommentReply(reply *model.CommentReply) error
-	GetCommentContentsByIDs(ids []int64) ([]*model.CommentContent, error)
-	GetCommentRepliesByID(ids []int64) ([]*model.CommentReplyFormated, error)
-	CreateCommentContent(content *model.CommentContent) (*model.CommentContent, error)
+	// 消息服务
+	MessageService
+
+	// 话题服务
+	TopicService
+
+	// 广场泡泡服务
+	IndexPostsService
 
-	CreateMessage(msg *model.Message) (*model.Message, error)
-	GetUnreadCount(userID int64) (int64, error)
-	GetMessageByID(id int64) (*model.Message, error)
-	ReadMessage(message *model.Message) error
-	GetMessages(conditions *model.ConditionsT, offset, limit int) ([]*model.MessageFormated, error)
-	GetMessageCount(conditions *model.ConditionsT) (int64, error)
+	// 推文服务
+	TweetService
+	TweetManageService
+	TweetHelpService
 
-	CreateAttachment(attachment *model.Attachment) (*model.Attachment, error)
-	CreatePost(post *model.Post) (*model.Post, error)
-	DeletePost(post *model.Post) error
-	LockPost(post *model.Post) error
-	StickPost(post *model.Post) error
-	VisiblePost(post *model.Post, visibility model.PostVisibleT) error
-	GetPostByID(id int64) (*model.Post, error)
-	GetPosts(conditions *model.ConditionsT, offset, limit int) ([]*model.Post, error)
-	MergePosts(posts []*model.Post) ([]*model.PostFormated, error)
-	RevampPosts(posts []*model.PostFormated) ([]*model.PostFormated, error)
-	GetPostCount(conditions *model.ConditionsT) (int64, error)
-	UpdatePost(post *model.Post) error
-	GetUserPostStar(postID, userID int64) (*model.PostStar, error)
-	GetUserPostStars(userID int64, offset, limit int) ([]*model.PostStar, error)
-	GetUserPostStarCount(userID int64) (int64, error)
-	CreatePostStar(postID, userID int64) (*model.PostStar, error)
-	DeletePostStar(p *model.PostStar) error
-	GetUserPostCollection(postID, userID int64) (*model.PostCollection, error)
-	GetUserPostCollections(userID int64, offset, limit int) ([]*model.PostCollection, error)
-	GetUserPostCollectionCount(userID int64) (int64, error)
-	GetUserWalletBills(userID int64, offset, limit int) ([]*model.WalletStatement, error)
-	GetUserWalletBillCount(userID int64) (int64, error)
-	CreatePostCollection(postID, userID int64) (*model.PostCollection, error)
-	DeletePostCollection(p *model.PostCollection) error
-	GetPostAttatchmentBill(postID, userID int64) (*model.PostAttachmentBill, error)
-	CreatePostContent(content *model.PostContent) (*model.PostContent, error)
-	GetPostContentsByIDs(ids []int64) ([]*model.PostContent, error)
-	GetPostContentByID(id int64) (*model.PostContent, error)
+	// 附件检测服务
+	AttachmentCheckService
 
-	CreateTag(tag *model.Tag) (*model.Tag, error)
-	DeleteTag(tag *model.Tag) error
-	GetTags(conditions *model.ConditionsT, offset, limit int) ([]*model.Tag, error)
+	// 评论服务
+	CommentService
+	CommentManageService
 
-	GetUserByID(id int64) (*model.User, error)
-	GetUserByUsername(username string) (*model.User, error)
-	GetUserByPhone(phone string) (*model.User, error)
-	GetUsersByIDs(ids []int64) ([]*model.User, error)
-	GetUsersByKeyword(keyword string) ([]*model.User, error)
-	GetTagsByKeyword(keyword string) ([]*model.Tag, error)
-	CreateUser(user *model.User) (*model.User, error)
-	UpdateUser(user *model.User) error
-	GetLatestPhoneCaptcha(phone string) (*model.Captcha, error)
-	UsePhoneCaptcha(captcha *model.Captcha) error
-	SendPhoneCaptcha(phone string) error
+	// 用户服务
+	UserManageService
 
-	IsFriend(userID int64, friendID int64) bool
+	// 安全服务
+	SecurityService
 }
diff --git a/internal/core/index.go b/internal/core/index.go
deleted file mode 100644
index be83abec..00000000
--- a/internal/core/index.go
+++ /dev/null
@@ -1,9 +0,0 @@
-package core
-
-import (
-	"github.com/rocboss/paopao-ce/internal/model"
-)
-
-type IndexPostsService interface {
-	IndexPosts(user *model.User, offset int, limit int) ([]*model.PostFormated, error)
-}
diff --git a/internal/core/messages.go b/internal/core/messages.go
new file mode 100644
index 00000000..aa08a1f8
--- /dev/null
+++ b/internal/core/messages.go
@@ -0,0 +1,15 @@
+package core
+
+import (
+	"github.com/rocboss/paopao-ce/internal/model"
+)
+
+// MessageService 消息服务
+type MessageService interface {
+	CreateMessage(msg *model.Message) (*model.Message, error)
+	GetUnreadCount(userID int64) (int64, error)
+	GetMessageByID(id int64) (*model.Message, error)
+	ReadMessage(message *model.Message) error
+	GetMessages(conditions *model.ConditionsT, offset, limit int) ([]*model.MessageFormated, error)
+	GetMessageCount(conditions *model.ConditionsT) (int64, error)
+}
diff --git a/internal/core/search.go b/internal/core/search.go
index 7e8b1db5..ce738d2f 100644
--- a/internal/core/search.go
+++ b/internal/core/search.go
@@ -26,8 +26,6 @@ type DocItems []map[string]interface{}
 
 // TweetSearchService tweet search service interface
 type TweetSearchService interface {
-	VersionInfo
-
 	IndexName() string
 	AddDocuments(documents DocItems, primaryKey ...string) (bool, error)
 	DeleteDocuments(identifiers []string) error
diff --git a/internal/core/security.go b/internal/core/security.go
new file mode 100644
index 00000000..63a7ac21
--- /dev/null
+++ b/internal/core/security.go
@@ -0,0 +1,17 @@
+package core
+
+import (
+	"github.com/rocboss/paopao-ce/internal/model"
+)
+
+// SecurityService 安全相关服务
+type SecurityService interface {
+	GetLatestPhoneCaptcha(phone string) (*model.Captcha, error)
+	UsePhoneCaptcha(captcha *model.Captcha) error
+	SendPhoneCaptcha(phone string) error
+}
+
+// 附件检测服务
+type AttachmentCheckService interface {
+	CheckAttachment(uri string) error
+}
diff --git a/internal/core/storage.go b/internal/core/storage.go
index 1be1d690..f1aa7ce7 100644
--- a/internal/core/storage.go
+++ b/internal/core/storage.go
@@ -6,8 +6,6 @@ import (
 
 // ObjectStorageService storage service interface that implement base AliOSS、MINIO or other
 type ObjectStorageService interface {
-	VersionInfo
-
 	PutObject(objectKey string, reader io.Reader, objectSize int64, contentType string) (string, error)
 	SignURL(objectKey string, expiredInSec int64) (string, error)
 	ObjectURL(objetKey string) string
diff --git a/internal/core/topics.go b/internal/core/topics.go
new file mode 100644
index 00000000..a894f9b2
--- /dev/null
+++ b/internal/core/topics.go
@@ -0,0 +1,13 @@
+package core
+
+import (
+	"github.com/rocboss/paopao-ce/internal/model"
+)
+
+// TopicService 话题服务
+type TopicService interface {
+	CreateTag(tag *model.Tag) (*model.Tag, error)
+	DeleteTag(tag *model.Tag) error
+	GetTags(conditions *model.ConditionsT, offset, limit int) ([]*model.Tag, error)
+	GetTagsByKeyword(keyword string) ([]*model.Tag, error)
+}
diff --git a/internal/core/tweets.go b/internal/core/tweets.go
new file mode 100644
index 00000000..5c61ba2d
--- /dev/null
+++ b/internal/core/tweets.go
@@ -0,0 +1,48 @@
+package core
+
+import (
+	"github.com/rocboss/paopao-ce/internal/model"
+)
+
+// TweetService 推文检索服务
+type TweetService interface {
+	GetPostByID(id int64) (*model.Post, error)
+	GetPosts(conditions *model.ConditionsT, offset, limit int) ([]*model.Post, error)
+	GetPostCount(conditions *model.ConditionsT) (int64, error)
+	GetUserPostStar(postID, userID int64) (*model.PostStar, error)
+	GetUserPostStars(userID int64, offset, limit int) ([]*model.PostStar, error)
+	GetUserPostStarCount(userID int64) (int64, error)
+	GetUserPostCollection(postID, userID int64) (*model.PostCollection, error)
+	GetUserPostCollections(userID int64, offset, limit int) ([]*model.PostCollection, error)
+	GetUserPostCollectionCount(userID int64) (int64, error)
+	GetPostAttatchmentBill(postID, userID int64) (*model.PostAttachmentBill, error)
+	GetPostContentsByIDs(ids []int64) ([]*model.PostContent, error)
+	GetPostContentByID(id int64) (*model.PostContent, error)
+}
+
+// TweetManageService 推文管理服务，包括创建/删除/更新推文
+type TweetManageService interface {
+	CreateAttachment(attachment *model.Attachment) (*model.Attachment, error)
+	CreatePost(post *model.Post) (*model.Post, error)
+	DeletePost(post *model.Post) error
+	LockPost(post *model.Post) error
+	StickPost(post *model.Post) error
+	VisiblePost(post *model.Post, visibility model.PostVisibleT) error
+	UpdatePost(post *model.Post) error
+	CreatePostStar(postID, userID int64) (*model.PostStar, error)
+	DeletePostStar(p *model.PostStar) error
+	CreatePostCollection(postID, userID int64) (*model.PostCollection, error)
+	DeletePostCollection(p *model.PostCollection) error
+	CreatePostContent(content *model.PostContent) (*model.PostContent, error)
+}
+
+// TweetHelpService 推文辅助服务
+type TweetHelpService interface {
+	RevampPosts(posts []*model.PostFormated) ([]*model.PostFormated, error)
+	MergePosts(posts []*model.Post) ([]*model.PostFormated, error)
+}
+
+// IndexPostsService 广场首页推文列表服务
+type IndexPostsService interface {
+	IndexPosts(user *model.User, offset int, limit int) ([]*model.PostFormated, error)
+}
diff --git a/internal/core/user.go b/internal/core/user.go
new file mode 100644
index 00000000..36ceabfc
--- /dev/null
+++ b/internal/core/user.go
@@ -0,0 +1,17 @@
+package core
+
+import (
+	"github.com/rocboss/paopao-ce/internal/model"
+)
+
+// UserManageService 用户管理服务
+type UserManageService interface {
+	GetUserByID(id int64) (*model.User, error)
+	GetUserByUsername(username string) (*model.User, error)
+	GetUserByPhone(phone string) (*model.User, error)
+	GetUsersByIDs(ids []int64) ([]*model.User, error)
+	GetUsersByKeyword(keyword string) ([]*model.User, error)
+	CreateUser(user *model.User) (*model.User, error)
+	UpdateUser(user *model.User) error
+	IsFriend(userID int64, friendID int64) bool
+}
diff --git a/internal/core/version.go b/internal/core/version.go
deleted file mode 100644
index fd8bab2d..00000000
--- a/internal/core/version.go
+++ /dev/null
@@ -1,10 +0,0 @@
-package core
-
-import (
-	"github.com/Masterminds/semver/v3"
-)
-
-type VersionInfo interface {
-	Name() string
-	Version() *semver.Version
-}
diff --git a/internal/core/wallet.go b/internal/core/wallet.go
index e6cea7c9..5b3a3391 100644
--- a/internal/core/wallet.go
+++ b/internal/core/wallet.go
@@ -6,6 +6,8 @@ import (
 
 // WalletService wallet service interface
 type WalletService interface {
+	GetUserWalletBills(userID int64, offset, limit int) ([]*model.WalletStatement, error)
+	GetUserWalletBillCount(userID int64) (int64, error)
 	GetRechargeByID(id int64) (*model.WalletRecharge, error)
 	CreateRecharge(userId, amount int64) (*model.WalletRecharge, error)
 	HandleRechargeSuccess(recharge *model.WalletRecharge, tradeNo string) error
diff --git a/internal/dao/attachment.go b/internal/dao/attachment.go
index 3bb1c82c..9e56f6f6 100644
--- a/internal/dao/attachment.go
+++ b/internal/dao/attachment.go
@@ -11,7 +11,7 @@ func (d *dataServant) CreateAttachment(attachment *model.Attachment) (*model.Att
 	return attachment.Create(d.engine)
 }
 
-func (s *attachmentCheckServant) Check(uri string) error {
+func (s *attachmentCheckServant) CheckAttachment(uri string) error {
 	if strings.Index(uri, s.domain) != 0 {
 		return fmt.Errorf("附件非本站资源")
 	}
diff --git a/internal/dao/cache_index_big.go b/internal/dao/cache_index_big.go
index e39cfab1..c6a21e99 100644
--- a/internal/dao/cache_index_big.go
+++ b/internal/dao/cache_index_big.go
@@ -14,7 +14,7 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-func newBigCacheIndexServant(getIndexPosts indexPostsFunc) *bigCacheIndexServant {
+func newBigCacheIndexServant(getIndexPosts indexPostsFunc) (*bigCacheIndexServant, versionInfo) {
 	s := conf.BigCacheIndexSetting
 
 	config := bigcache.DefaultConfig(s.ExpireInSecond)
@@ -46,7 +46,7 @@ func newBigCacheIndexServant(getIndexPosts indexPostsFunc) *bigCacheIndexServant
 	// 启动索引更新器
 	go cacheIndex.startIndexPosts()
 
-	return cacheIndex
+	return cacheIndex, cacheIndex
 }
 
 func (s *bigCacheIndexServant) IndexPosts(user *model.User, offset int, limit int) ([]*model.PostFormated, error) {
@@ -153,10 +153,10 @@ func (s *bigCacheIndexServant) startIndexPosts() {
 	}
 }
 
-func (s *bigCacheIndexServant) Name() string {
+func (s *bigCacheIndexServant) name() string {
 	return "BigCacheIndex"
 }
 
-func (s *bigCacheIndexServant) Version() *semver.Version {
+func (s *bigCacheIndexServant) version() *semver.Version {
 	return semver.MustParse("v0.1.0")
 }
diff --git a/internal/dao/cache_index_none.go b/internal/dao/cache_index_none.go
index d0431c6e..db44fbe0 100644
--- a/internal/dao/cache_index_none.go
+++ b/internal/dao/cache_index_none.go
@@ -6,10 +6,11 @@ import (
 	"github.com/rocboss/paopao-ce/internal/model"
 )
 
-func newNoneCacheIndexServant(getIndexPosts indexPostsFunc) *noneCacheIndexServant {
-	return &noneCacheIndexServant{
+func newNoneCacheIndexServant(getIndexPosts indexPostsFunc) (*noneCacheIndexServant, versionInfo) {
+	obj := &noneCacheIndexServant{
 		getIndexPosts: getIndexPosts,
 	}
+	return obj, obj
 }
 
 func (s *noneCacheIndexServant) IndexPosts(user *model.User, offset int, limit int) ([]*model.PostFormated, error) {
@@ -20,10 +21,10 @@ func (s *noneCacheIndexServant) SendAction(act core.IndexActionT) {
 	// empty
 }
 
-func (s *noneCacheIndexServant) Name() string {
+func (s *noneCacheIndexServant) name() string {
 	return "NoneCacheIndex"
 }
 
-func (s *noneCacheIndexServant) Version() *semver.Version {
+func (s *noneCacheIndexServant) version() *semver.Version {
 	return semver.MustParse("v0.1.0")
 }
diff --git a/internal/dao/cache_index_simple.go b/internal/dao/cache_index_simple.go
index 1d82a37e..47ad6f78 100644
--- a/internal/dao/cache_index_simple.go
+++ b/internal/dao/cache_index_simple.go
@@ -1,7 +1,6 @@
 package dao
 
 import (
-	"errors"
 	"time"
 
 	"github.com/Masterminds/semver/v3"
@@ -11,11 +10,7 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-var (
-	errNotExist = errors.New("index posts cache not exist")
-)
-
-func newSimpleCacheIndexServant(getIndexPosts indexPostsFunc) *simpleCacheIndexServant {
+func newSimpleCacheIndexServant(getIndexPosts indexPostsFunc) (*simpleCacheIndexServant, versionInfo) {
 	s := conf.SimpleCacheIndexSetting
 	cacheIndex := &simpleCacheIndexServant{
 		getIndexPosts:   getIndexPosts,
@@ -46,7 +41,7 @@ func newSimpleCacheIndexServant(getIndexPosts indexPostsFunc) *simpleCacheIndexS
 	cacheIndex.atomicIndex.Store(cacheIndex.indexPosts)
 	go cacheIndex.startIndexPosts()
 
-	return cacheIndex
+	return cacheIndex, cacheIndex
 }
 
 func (s *simpleCacheIndexServant) IndexPosts(user *model.User, offset int, limit int) ([]*model.PostFormated, error) {
@@ -114,10 +109,10 @@ func (s *simpleCacheIndexServant) startIndexPosts() {
 	}
 }
 
-func (s *simpleCacheIndexServant) Name() string {
+func (s *simpleCacheIndexServant) name() string {
 	return "SimpleCacheIndex"
 }
 
-func (s *simpleCacheIndexServant) Version() *semver.Version {
+func (s *simpleCacheIndexServant) version() *semver.Version {
 	return semver.MustParse("v0.1.0")
 }
diff --git a/internal/dao/dao.go b/internal/dao/dao.go
index 00a0fcff..e7ce2317 100644
--- a/internal/dao/dao.go
+++ b/internal/dao/dao.go
@@ -9,12 +9,12 @@ import (
 
 var (
 	_ core.DataService                = (*dataServant)(nil)
-	_ core.AttachmentCheckService     = (*attachmentCheckServant)(nil)
 	_ core.AuthorizationManageService = (*simpleAuthorizationManageService)(nil)
 )
 
 type dataServant struct {
 	core.CacheIndexService
+	core.AttachmentCheckService
 
 	ams    core.AuthorizationManageService
 	engine *gorm.DB
@@ -30,29 +30,32 @@ type attachmentCheckServant struct {
 
 func NewDataService() core.DataService {
 	ds := &dataServant{
+		ams:                    newAuthorizationManageService(),
+		AttachmentCheckService: NewAttachmentCheckService(),
+
 		engine: conf.DBEngine,
-		ams:    NewAuthorizationManageService(),
 	}
 
 	// initialize CacheIndex if needed
+	var v versionInfo
 	if conf.CfgIf("SimpleCacheIndex") {
-		ds.CacheIndexService = newSimpleCacheIndexServant(ds.simpleCacheIndexGetPosts)
+		ds.CacheIndexService, v = newSimpleCacheIndexServant(ds.simpleCacheIndexGetPosts)
 	} else if conf.CfgIf("BigCacheIndex") {
-		ds.CacheIndexService = newBigCacheIndexServant(ds.getIndexPosts)
+		ds.CacheIndexService, v = newBigCacheIndexServant(ds.getIndexPosts)
 	} else {
-		ds.CacheIndexService = newNoneCacheIndexServant(ds.getIndexPosts)
+		ds.CacheIndexService, v = newNoneCacheIndexServant(ds.getIndexPosts)
 	}
-	logrus.Infof("use %s as cache index service by version: %s", ds.CacheIndexService.Name(), ds.CacheIndexService.Version())
+	logrus.Infof("use %s as cache index service by version: %s", v.name(), v.version())
 
 	return ds
 }
 
-func NewAuthorizationManageService() core.AuthorizationManageService {
-	return newSimpleAuthorizationManageService()
-}
-
 func NewAttachmentCheckService() core.AttachmentCheckService {
 	return &attachmentCheckServant{
 		domain: getOssDomain(),
 	}
 }
+
+func newAuthorizationManageService() core.AuthorizationManageService {
+	return newSimpleAuthorizationManageService()
+}
diff --git a/internal/dao/oss.go b/internal/dao/oss.go
index a85bb8d9..62294e1e 100644
--- a/internal/dao/oss.go
+++ b/internal/dao/oss.go
@@ -34,22 +34,23 @@ type minioServant struct {
 type s3Servant = minioServant
 
 func NewObjectStorageService() (oss core.ObjectStorageService) {
+	var v versionInfo
 	if conf.CfgIf("AliOSS") {
-		oss = newAliossServent()
+		oss, v = newAliossServent()
 	} else if conf.CfgIf("MinIO") {
-		oss = newMinioServeant()
+		oss, v = newMinioServeant()
 	} else if conf.CfgIf("S3") {
-		oss = newS3Servent()
-		logrus.Infof("use S3 as object storage by version %s", oss.Version())
+		oss, v = newS3Servent()
+		logrus.Infof("use S3 as object storage by version %s", v.version())
 		return
 	} else if conf.CfgIf("LocalOSS") {
-		oss = newLocalossServent()
+		oss, v = newLocalossServent()
 	} else {
 		// default use AliOSS as object storage service
-		oss = newAliossServent()
-		logrus.Infof("use default AliOSS as object storage by version %s", oss.Version())
+		oss, v = newAliossServent()
+		logrus.Infof("use default AliOSS as object storage by version %s", v.version())
 		return
 	}
-	logrus.Infof("use %s as object storage by version %s", oss.Name(), oss.Version())
+	logrus.Infof("use %s as object storage by version %s", v.name(), v.version())
 	return
 }
diff --git a/internal/dao/oss_alioss.go b/internal/dao/oss_alioss.go
index 641d4a54..71c8aa1d 100644
--- a/internal/dao/oss_alioss.go
+++ b/internal/dao/oss_alioss.go
@@ -11,7 +11,7 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-func newAliossServent() *aliossServant {
+func newAliossServent() (*aliossServant, versionInfo) {
 	client, err := oss.New(conf.AliOSSSetting.Endpoint, conf.AliOSSSetting.AccessKeyID, conf.AliOSSSetting.AccessKeySecret)
 	if err != nil {
 		logrus.Fatalf("alioss.New err: %v", err)
@@ -22,17 +22,18 @@ func newAliossServent() *aliossServant {
 		logrus.Fatalf("client.Bucket err: %v", err)
 	}
 
-	return &aliossServant{
+	obj := &aliossServant{
 		bucket: bucket,
 		domain: getOssDomain(),
 	}
+	return obj, obj
 }
 
-func (s *aliossServant) Name() string {
+func (s *aliossServant) name() string {
 	return "AliOSS"
 }
 
-func (s *aliossServant) Version() *semver.Version {
+func (s *aliossServant) version() *semver.Version {
 	return semver.MustParse("v0.1.0")
 }
 
diff --git a/internal/dao/oss_local.go b/internal/dao/oss_local.go
index 46983260..a7fa5dfa 100644
--- a/internal/dao/oss_local.go
+++ b/internal/dao/oss_local.go
@@ -14,23 +14,24 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-func newLocalossServent() *localossServant {
+func newLocalossServent() (*localossServant, versionInfo) {
 	savePath, err := filepath.Abs(conf.LocalOSSSetting.SavePath)
 	if err != nil {
 		logrus.Fatalf("get localOSS save path err: %v", err)
 	}
 
-	return &localossServant{
+	obj := &localossServant{
 		savePath: savePath + "/" + conf.LocalOSSSetting.Bucket + "/",
 		domain:   getOssDomain(),
 	}
+	return obj, obj
 }
 
-func (s *localossServant) Name() string {
+func (s *localossServant) name() string {
 	return "LocalOSS"
 }
 
-func (s *localossServant) Version() *semver.Version {
+func (s *localossServant) version() *semver.Version {
 	return semver.MustParse("v0.1.0")
 }
 
diff --git a/internal/dao/oss_minio.go b/internal/dao/oss_minio.go
index 470f03b1..c10ee1a7 100644
--- a/internal/dao/oss_minio.go
+++ b/internal/dao/oss_minio.go
@@ -14,7 +14,7 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-func newMinioServeant() *minioServant {
+func newMinioServeant() (*minioServant, versionInfo) {
 	// Initialize minio client object.
 	client, err := minio.New(conf.MinIOSetting.Endpoint, &minio.Options{
 		Creds:  credentials.NewStaticV4(conf.MinIOSetting.AccessKey, conf.MinIOSetting.SecretKey, ""),
@@ -23,18 +23,20 @@ func newMinioServeant() *minioServant {
 	if err != nil {
 		logrus.Fatalf("minio.New err: %v", err)
 	}
-	return &minioServant{
+
+	obj := &minioServant{
 		client: client,
 		bucket: conf.MinIOSetting.Bucket,
 		domain: getOssDomain(),
 	}
+	return obj, obj
 }
 
-func (s *minioServant) Name() string {
+func (s *minioServant) name() string {
 	return "MinIO"
 }
 
-func (s *minioServant) Version() *semver.Version {
+func (s *minioServant) version() *semver.Version {
 	return semver.MustParse("v0.1.0")
 }
 
diff --git a/internal/dao/oss_s3.go b/internal/dao/oss_s3.go
index ee8c1284..a0672e5b 100644
--- a/internal/dao/oss_s3.go
+++ b/internal/dao/oss_s3.go
@@ -7,7 +7,7 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-func newS3Servent() *s3Servant {
+func newS3Servent() (*s3Servant, versionInfo) {
 	// Initialize s3 client object use minio-go.
 	client, err := minio.New(conf.S3Setting.Endpoint, &minio.Options{
 		Creds:  credentials.NewStaticV4(conf.S3Setting.AccessKey, conf.S3Setting.SecretKey, ""),
@@ -16,9 +16,11 @@ func newS3Servent() *s3Servant {
 	if err != nil {
 		logrus.Fatalf("s3.New err: %v", err)
 	}
-	return &s3Servant{
+
+	obj := &s3Servant{
 		client: client,
 		bucket: conf.MinIOSetting.Bucket,
 		domain: getOssDomain(),
 	}
+	return obj, obj
 }
diff --git a/internal/dao/search.go b/internal/dao/search.go
index fb310ffe..5c51e066 100644
--- a/internal/dao/search.go
+++ b/internal/dao/search.go
@@ -59,15 +59,16 @@ func NewTweetSearchService() core.TweetSearchService {
 	}
 	bts.updateDocsCh = make(chan *documents, capacity)
 
+	var v versionInfo
 	if conf.CfgIf("Zinc") {
-		bts.ts = newZincTweetSearchServant()
+		bts.ts, v = newZincTweetSearchServant()
 	} else if conf.CfgIf("Meili") {
-		bts.ts = newMeiliTweetSearchServant()
+		bts.ts, v = newMeiliTweetSearchServant()
 	} else {
 		// default use Zinc as tweet search service
-		bts.ts = newZincTweetSearchServant()
+		bts.ts, v = newZincTweetSearchServant()
 	}
-	logrus.Infof("use %s as tweet search serice by version %s", bts.ts.Name(), bts.ts.Version())
+	logrus.Infof("use %s as tweet search serice by version %s", v.name(), v.version())
 
 	numWorker := conf.TweetSearchSetting.MinWorker
 	if numWorker < 5 {
diff --git a/internal/dao/search_bridge.go b/internal/dao/search_bridge.go
index f4d1c1b3..5625810f 100644
--- a/internal/dao/search_bridge.go
+++ b/internal/dao/search_bridge.go
@@ -1,20 +1,11 @@
 package dao
 
 import (
-	"github.com/Masterminds/semver/v3"
 	"github.com/rocboss/paopao-ce/internal/core"
 	"github.com/rocboss/paopao-ce/internal/model"
 	"github.com/sirupsen/logrus"
 )
 
-func (s *bridgeTweetSearchServant) Name() string {
-	return "BridgeTweetSearch"
-}
-
-func (s *bridgeTweetSearchServant) Version() *semver.Version {
-	return semver.MustParse("v0.1.0")
-}
-
 func (s *bridgeTweetSearchServant) IndexName() string {
 	return s.ts.IndexName()
 }
diff --git a/internal/dao/search_meili.go b/internal/dao/search_meili.go
index 32eb4a7a..1544dd33 100644
--- a/internal/dao/search_meili.go
+++ b/internal/dao/search_meili.go
@@ -12,7 +12,7 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-func newMeiliTweetSearchServant() *meiliTweetSearchServant {
+func newMeiliTweetSearchServant() (*meiliTweetSearchServant, versionInfo) {
 	s := conf.MeiliSetting
 	client := meilisearch.NewClient(meilisearch.ClientConfig{
 		Host:   s.Endpoint(),
@@ -35,9 +35,9 @@ func newMeiliTweetSearchServant() *meiliTweetSearchServant {
 		index.UpdateFilterableAttributes(&filterableAttributes)
 	}
 
-	return &meiliTweetSearchServant{
+	obj := &meiliTweetSearchServant{
 		tweetSearchFilter: tweetSearchFilter{
-			ams: NewAuthorizationManageService(),
+			ams: newAuthorizationManageService(),
 		},
 		client:        client,
 		index:         client.Index(s.Index),
@@ -45,13 +45,14 @@ func newMeiliTweetSearchServant() *meiliTweetSearchServant {
 		privateFilter: fmt.Sprintf("visibility=%d AND user_id=", model.PostVisitPrivate),
 		friendFilter:  fmt.Sprintf("visibility=%d", model.PostVisitFriend),
 	}
+	return obj, obj
 }
 
-func (s *meiliTweetSearchServant) Name() string {
+func (s *meiliTweetSearchServant) name() string {
 	return "Meili"
 }
 
-func (s *meiliTweetSearchServant) Version() *semver.Version {
+func (s *meiliTweetSearchServant) version() *semver.Version {
 	return semver.MustParse("v0.2.0")
 }
 
diff --git a/internal/dao/search_zinc.go b/internal/dao/search_zinc.go
index b511749e..71f3c789 100644
--- a/internal/dao/search_zinc.go
+++ b/internal/dao/search_zinc.go
@@ -12,11 +12,11 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-func newZincTweetSearchServant() *zincTweetSearchServant {
+func newZincTweetSearchServant() (*zincTweetSearchServant, versionInfo) {
 	s := conf.ZincSetting
 	zts := &zincTweetSearchServant{
 		tweetSearchFilter: tweetSearchFilter{
-			ams: NewAuthorizationManageService(),
+			ams: newAuthorizationManageService(),
 		},
 		indexName:     s.Index,
 		client:        zinc.NewClient(s),
@@ -26,14 +26,14 @@ func newZincTweetSearchServant() *zincTweetSearchServant {
 	}
 	zts.createIndex()
 
-	return zts
+	return zts, zts
 }
 
-func (s *zincTweetSearchServant) Name() string {
+func (s *zincTweetSearchServant) name() string {
 	return "Zinc"
 }
 
-func (s *zincTweetSearchServant) Version() *semver.Version {
+func (s *zincTweetSearchServant) version() *semver.Version {
 	return semver.MustParse("v0.2.0")
 }
 
diff --git a/internal/dao/version.go b/internal/dao/version.go
new file mode 100644
index 00000000..8cab2d84
--- /dev/null
+++ b/internal/dao/version.go
@@ -0,0 +1,11 @@
+package dao
+
+import (
+	"github.com/Masterminds/semver/v3"
+)
+
+// versionInfo 版本信息
+type versionInfo interface {
+	name() string
+	version() *semver.Version
+}
diff --git a/internal/routers/api/user.go b/internal/routers/api/user.go
index 1b4e1807..068f5c87 100644
--- a/internal/routers/api/user.go
+++ b/internal/routers/api/user.go
@@ -204,7 +204,7 @@ func ChangeAvatar(c *gin.Context) {
 		user = u.(*model.User)
 	}
 
-	if err := attachmentChecker.Check(param.Avatar); err != nil {
+	if err := attachmentChecker.CheckAttachment(param.Avatar); err != nil {
 		response.ToErrorResponse(errcode.InvalidParams)
 		return
 	}
diff --git a/internal/service/comment.go b/internal/service/comment.go
index 8805c106..1bf6bbeb 100644
--- a/internal/service/comment.go
+++ b/internal/service/comment.go
@@ -115,7 +115,7 @@ func CreatePostComment(ctx *gin.Context, userID int64, param CommentCreationReq)
 	for _, item := range param.Contents {
 		// 检查附件是否是本站资源
 		if item.Type == model.CONTENT_TYPE_IMAGE || item.Type == model.CONTENT_TYPE_VIDEO || item.Type == model.CONTENT_TYPE_ATTACHMENT {
-			if err := attachmentChecker.Check(item.Content); err != nil {
+			if err := ds.CheckAttachment(item.Content); err != nil {
 				continue
 			}
 		}
diff --git a/internal/service/post.go b/internal/service/post.go
index 4e2f6fec..c7876a15 100644
--- a/internal/service/post.go
+++ b/internal/service/post.go
@@ -75,7 +75,7 @@ func (p *PostContentItem) Check() error {
 	// 检查附件是否是本站资源
 	if p.Type == model.CONTENT_TYPE_IMAGE || p.Type == model.CONTENT_TYPE_VIDEO || p.Type == model.
 		CONTENT_TYPE_ATTACHMENT {
-		if err := attachmentChecker.Check(p.Content); err != nil {
+		if err := ds.CheckAttachment(p.Content); err != nil {
 			return err
 		}
 	}
diff --git a/internal/service/service.go b/internal/service/service.go
index 8593f754..268a2558 100644
--- a/internal/service/service.go
+++ b/internal/service/service.go
@@ -9,13 +9,11 @@ import (
 var (
 	ds                 core.DataService
 	ts                 core.TweetSearchService
-	attachmentChecker  core.AttachmentCheckService
 	DisablePhoneVerify bool
 )
 
 func Initialize() {
 	ds = dao.NewDataService()
 	ts = dao.NewTweetSearchService()
-	attachmentChecker = dao.NewAttachmentCheckService()
 	DisablePhoneVerify = !conf.CfgIf("Sms")
 }