diff --git a/session/common.go b/session/common.go
index 5850b37..7be9c41 100644
--- a/session/common.go
+++ b/session/common.go
@@ -82,6 +82,11 @@ func publickey_to_storagekey(pk publickey) storagekey {
 	return storagekey(hex.EncodeToString(decoded[:]))
 }
 
+type Config struct {
+	SessionTTL     int64  `json:"session_ttl"`
+	SessionStorage string `json:"session_storage"`
+}
+
 var errInvalidScheme = errors.New("storageAddr is not valid scheme")
 
 func NewConsumer(ctx context.Context, storageAddr string, ttl time.Duration) (Consumer, error) {
@@ -96,6 +101,10 @@ func NewConsumer(ctx context.Context, storageAddr string, ttl time.Duration) (Co
 	return nil, errInvalidScheme
 }
 
+func NewConsumerWithConfig(ctx context.Context, cfg Config) (Consumer, error) {
+	return NewConsumer(ctx, cfg.SessionStorage, time.Duration(cfg.SessionTTL)*time.Second)
+}
+
 func NewProvider(ctx context.Context, storageAddr string, ttl time.Duration) (Provider, error) {
 	if strings.HasPrefix(storageAddr, "mongodb") {
 		return newProviderWithMongo(ctx, storageAddr, ttl)
@@ -108,7 +117,6 @@ func NewProvider(ctx context.Context, storageAddr string, ttl time.Duration) (Pr
 	return nil, errInvalidScheme
 }
 
-type Config struct {
-	SessionTTL     int64  `json:"session_ttl"`
-	SessionStorage string `json:"session_storage"`
+func NewProviderWithConfig(ctx context.Context, cfg Config) (Provider, error) {
+	return NewProvider(ctx, cfg.SessionStorage, time.Duration(cfg.SessionTTL)*time.Second)
 }