feat: use cache to avoid database access (#158)

common/redis.go

@@ -37,3 +37,18 @@ func ParseRedisOption() *redis.Options {
 	}
 	return opt
 }
+
+func RedisSet(key string, value string, expiration time.Duration) error {
+	ctx := context.Background()
+	return RDB.Set(ctx, key, value, expiration).Err()
+}
+
+func RedisGet(key string) (string, error) {
+	ctx := context.Background()
+	return RDB.Get(ctx, key).Result()
+}
+
+func RedisDel(key string) error {
+	ctx := context.Background()
+	return RDB.Del(ctx, key).Err()
+}