diff --git a/pkg/bbgo/config.go b/pkg/bbgo/config.go
index 959328ff2..6c52a5631 100644
--- a/pkg/bbgo/config.go
+++ b/pkg/bbgo/config.go
@@ -14,6 +14,7 @@ import (
 
 	"github.com/c9s/bbgo/pkg/datatype"
 	"github.com/c9s/bbgo/pkg/fixedpoint"
+	"github.com/c9s/bbgo/pkg/service"
 	"github.com/c9s/bbgo/pkg/types"
 )
 
@@ -133,20 +134,9 @@ func (m BacktestAccountBalanceMap) BalanceMap() types.BalanceMap {
 	return balances
 }
 
-type RedisPersistenceConfig struct {
-	Host     string `json:"host" env:"REDIS_HOST"`
-	Port     string `json:"port" env:"REDIS_PORT"`
-	Password string `json:"password" env:"REDIS_PASSWORD"`
-	DB       int    `json:"db" env:"REDIS_DB"`
-}
-
-type JsonPersistenceConfig struct {
-	Directory string `json:"directory"`
-}
-
 type PersistenceConfig struct {
-	Redis *RedisPersistenceConfig `json:"redis,omitempty" yaml:"redis,omitempty"`
-	Json  *JsonPersistenceConfig  `json:"json,omitempty" yaml:"json,omitempty"`
+	Redis *service.RedisPersistenceConfig `json:"redis,omitempty" yaml:"redis,omitempty"`
+	Json  *service.JsonPersistenceConfig  `json:"json,omitempty" yaml:"json,omitempty"`
 }
 
 type BuildTargetConfig struct {
diff --git a/pkg/bbgo/persistence.go b/pkg/bbgo/persistence.go
index 3d669e337..93d0c3fa7 100644
--- a/pkg/bbgo/persistence.go
+++ b/pkg/bbgo/persistence.go
@@ -21,7 +21,7 @@ type Persistence struct {
 	Facade *service.PersistenceServiceFacade `json:"-" yaml:"-"`
 }
 
-func (p *Persistence) backendService(t string) (service PersistenceService, err error) {
+func (p *Persistence) backendService(t string) (service service.PersistenceService, err error) {
 	switch t {
 	case "json":
 		service = p.Facade.Json
@@ -67,13 +67,3 @@ func (p *Persistence) Save(val interface{}, subIDs ...string) error {
 	return store.Save(val)
 }
 
-type PersistenceService interface {
-	NewStore(id string, subIDs ...string) Store
-}
-
-type Store interface {
-	Load(val interface{}) error
-	Save(val interface{}) error
-	Reset() error
-}
-
diff --git a/pkg/cmd/run.go b/pkg/cmd/run.go
index 100c4763e..fae3225cd 100644
--- a/pkg/cmd/run.go
+++ b/pkg/cmd/run.go
@@ -88,7 +88,7 @@ func runSetup(baseCtx context.Context, userConfig *bbgo.Config, enableApiServer
 	return nil
 }
 
-func newNotificationSystem(userConfig *bbgo.Config, persistence bbgo.PersistenceService) (*bbgo.Notifiability, error) {
+func newNotificationSystem(userConfig *bbgo.Config, persistence service.PersistenceService) (*bbgo.Notifiability, error) {
 	notification := &bbgo.Notifiability{
 		SymbolChannelRouter:  bbgo.NewPatternChannelRouter(nil),
 		SessionChannelRouter: bbgo.NewPatternChannelRouter(nil),
@@ -180,7 +180,7 @@ func BootstrapEnvironment(ctx context.Context, environ *bbgo.Environment, userCo
 	}
 
 	// configure persistence service, by default we will use memory service
-	var persistence bbgo.PersistenceService = service.NewMemoryService()
+	var persistence service.PersistenceService = service.NewMemoryService()
 	if environ.PersistenceServiceFacade != nil {
 		if environ.PersistenceServiceFacade.Redis != nil {
 			persistence = environ.PersistenceServiceFacade.Redis
diff --git a/pkg/notifier/telegramnotifier/interaction.go b/pkg/notifier/telegramnotifier/interaction.go
index dc00e20b5..79678be72 100644
--- a/pkg/notifier/telegramnotifier/interaction.go
+++ b/pkg/notifier/telegramnotifier/interaction.go
@@ -8,7 +8,7 @@ import (
 	"github.com/sirupsen/logrus"
 	"gopkg.in/tucnak/telebot.v2"
 
-	"github.com/c9s/bbgo/pkg/bbgo"
+	"github.com/c9s/bbgo/pkg/service"
 )
 
 var log = logrus.WithField("service", "telegram")
@@ -27,7 +27,7 @@ func NewSession(key *otp.Key) Session {
 
 //go:generate callbackgen -type Interaction
 type Interaction struct {
-	store bbgo.Store
+	store service.Store
 
 	bot *telebot.Bot
 
@@ -39,7 +39,7 @@ type Interaction struct {
 	AuthCallbacks  []func(user *telebot.User)
 }
 
-func NewInteraction(bot *telebot.Bot, store bbgo.Store) *Interaction {
+func NewInteraction(bot *telebot.Bot, store service.Store) *Interaction {
 	interaction := &Interaction{
 		store: store,
 		bot:   bot,
diff --git a/pkg/service/memory.go b/pkg/service/memory.go
index 1ff5056f9..a23500aca 100644
--- a/pkg/service/memory.go
+++ b/pkg/service/memory.go
@@ -3,8 +3,6 @@ package service
 import (
 	"reflect"
 	"strings"
-
-	"github.com/c9s/bbgo/pkg/bbgo"
 )
 
 type MemoryService struct {
@@ -17,7 +15,7 @@ func NewMemoryService() *MemoryService {
 	}
 }
 
-func (s *MemoryService) NewStore(id string, subIDs ...string) bbgo.Store {
+func (s *MemoryService) NewStore(id string, subIDs ...string) Store {
 	key := strings.Join(append([]string{id}, subIDs...), ":")
 	return &MemoryStore{
 		Key:    key,
diff --git a/pkg/service/persistence.go b/pkg/service/persistence.go
new file mode 100644
index 000000000..ef55ca2ef
--- /dev/null
+++ b/pkg/service/persistence.go
@@ -0,0 +1,23 @@
+package service
+
+type PersistenceService interface {
+	NewStore(id string, subIDs ...string) Store
+}
+
+type Store interface {
+	Load(val interface{}) error
+	Save(val interface{}) error
+	Reset() error
+}
+
+type RedisPersistenceConfig struct {
+	Host     string `json:"host" env:"REDIS_HOST"`
+	Port     string `json:"port" env:"REDIS_PORT"`
+	Password string `json:"password" env:"REDIS_PASSWORD"`
+	DB       int    `json:"db" env:"REDIS_DB"`
+}
+
+type JsonPersistenceConfig struct {
+	Directory string `json:"directory"`
+}
+
diff --git a/pkg/service/persistence_json.go b/pkg/service/persistence_json.go
index 3ac5c95f6..20ce52fa2 100644
--- a/pkg/service/persistence_json.go
+++ b/pkg/service/persistence_json.go
@@ -5,15 +5,13 @@ import (
 	"io/ioutil"
 	"os"
 	"path/filepath"
-
-	"github.com/c9s/bbgo/pkg/bbgo"
 )
 
 type JsonPersistenceService struct {
 	Directory string
 }
 
-func (s *JsonPersistenceService) NewStore(id string, subIDs ...string) bbgo.Store {
+func (s *JsonPersistenceService) NewStore(id string, subIDs ...string) Store {
 	return &JsonStore{
 		ID:        id,
 		Directory: filepath.Join(append([]string{s.Directory}, subIDs...)...),
diff --git a/pkg/service/persistence_redis.go b/pkg/service/persistence_redis.go
index e3ea08f2d..52ef4fef3 100644
--- a/pkg/service/persistence_redis.go
+++ b/pkg/service/persistence_redis.go
@@ -7,15 +7,13 @@ import (
 	"strings"
 
 	"github.com/go-redis/redis/v8"
-
-	"github.com/c9s/bbgo/pkg/bbgo"
 )
 
 type RedisPersistenceService struct {
 	redis *redis.Client
 }
 
-func NewRedisPersistenceService(config *bbgo.RedisPersistenceConfig) *RedisPersistenceService {
+func NewRedisPersistenceService(config *RedisPersistenceConfig) *RedisPersistenceService {
 	client := redis.NewClient(&redis.Options{
 		Addr: net.JoinHostPort(config.Host, config.Port),
 		// Username:           "", // username is only for redis 6.0
@@ -28,7 +26,7 @@ func NewRedisPersistenceService(config *bbgo.RedisPersistenceConfig) *RedisPersi
 	}
 }
 
-func (s *RedisPersistenceService) NewStore(id string, subIDs ...string) bbgo.Store {
+func (s *RedisPersistenceService) NewStore(id string, subIDs ...string) Store {
 	if len(subIDs) > 0 {
 		id += ":" + strings.Join(subIDs, ":")
 	}
diff --git a/pkg/service/persistence_redis_test.go b/pkg/service/persistence_redis_test.go
index fbd719a1a..ff1d0f0d6 100644
--- a/pkg/service/persistence_redis_test.go
+++ b/pkg/service/persistence_redis_test.go
@@ -5,12 +5,11 @@ import (
 
 	"github.com/stretchr/testify/assert"
 
-	"github.com/c9s/bbgo/pkg/bbgo"
 	"github.com/c9s/bbgo/pkg/fixedpoint"
 )
 
 func TestRedisPersistentService(t *testing.T) {
-	redisService := NewRedisPersistenceService(&bbgo.RedisPersistenceConfig{
+	redisService := NewRedisPersistenceService(&RedisPersistenceConfig{
 		Host: "127.0.0.1",
 		Port: "6379",
 		DB:   0,