diff --git a/cache/session.go b/cache/session.go
index 6a54037..2fefb7d 100644
--- a/cache/session.go
+++ b/cache/session.go
@@ -1,42 +1,22 @@
 package cache
 
 import (
-	"electricity_bill_calc/global"
 	"electricity_bill_calc/model"
 	"fmt"
 	"time"
-
-	"github.com/go-redis/redis/v8"
-	"github.com/vmihailenco/msgpack/v5"
 )
 
 func CacheSession(session *model.Session) error {
 	key := fmt.Sprintf("session:%s", session.Token)
-	serializedSession, err := msgpack.Marshal(session)
-
-	if err != nil {
-		return err
-	}
-
-	validRemains := time.Until(session.ExpiresAt)
-	cmd := global.RedisConn.SetNX(global.Ctx, key, serializedSession, validRemains)
-	return cmd.Err()
+	return Cache(key, session, 2*time.Hour)
 }
 
 func RetreiveSession(token string) (*model.Session, error) {
 	key := fmt.Sprintf("session:%s", token)
-	result, err := global.RedisConn.Get(global.Ctx, key).Result()
-	if err != nil {
-		if err == redis.Nil {
-			return nil, nil
-		} else {
-			return nil, err
-		}
-	}
-	session := &model.Session{}
-	err = msgpack.Unmarshal([]byte(result), session)
-	if err != nil {
-		return nil, err
-	}
-	return session, nil
+	return Retreive[model.Session](key)
+}
+
+func HasSession(token string) (bool, error) {
+	key := fmt.Sprintf("session:%s", token)
+	return Exists(key)
 }