diff --git a/memcached/config.go b/memcached/config.go
new file mode 100644
index 00000000..967038eb
--- /dev/null
+++ b/memcached/config.go
@@ -0,0 +1,13 @@
+package memcached
+
+// Config defines the config for storage.
+type Config struct {
+}
+
+// ConfigDefault is the default config
+var ConfigDefault = Config{}
+
+// Helper function to set default values
+func configDefault(cfg Config) Config {
+	return cfg
+}
diff --git a/memcached/memcached.go b/memcached/memcached.go
index e03fa908..a021e151 100644
--- a/memcached/memcached.go
+++ b/memcached/memcached.go
@@ -8,21 +8,25 @@ import (
 type Storage struct {
 }
 
-// Config defines the config for storage.
-type Config struct {
-}
-
-// ConfigDefault is the default config
-var ConfigDefault = Config{}
-
 // New creates a new storage
 func New(config ...Config) *Storage {
+	// Set default config
+	cfg := ConfigDefault
+
+	// Override config if provided
+	if len(config) > 0 {
+		cfg = configDefault(config[0])
+	}
+
+	// TODO
+	_ = cfg
+
 	return &Storage{}
 }
 
 // Get value by key
 func (s *Storage) Get(key string) ([]byte, error) {
-	return []byte{}, nil
+	return nil, nil
 }
 
 // Set key with value
diff --git a/mysql/config.go b/mysql/config.go
new file mode 100644
index 00000000..b93d8a52
--- /dev/null
+++ b/mysql/config.go
@@ -0,0 +1,13 @@
+package mysql
+
+// Config defines the config for storage.
+type Config struct {
+}
+
+// ConfigDefault is the default config
+var ConfigDefault = Config{}
+
+// Helper function to set default values
+func configDefault(cfg Config) Config {
+	return cfg
+}
diff --git a/mysql/mysql.go b/mysql/mysql.go
index 64444112..cc027223 100644
--- a/mysql/mysql.go
+++ b/mysql/mysql.go
@@ -1,28 +1,30 @@
 package mysql
 
-import (
-	"time"
-)
+import "time"
 
 // Storage interface that is implemented by storage providers
 type Storage struct {
 }
 
-// Config defines the config for storage.
-type Config struct {
-}
-
-// ConfigDefault is the default config
-var ConfigDefault = Config{}
-
 // New creates a new storage
 func New(config ...Config) *Storage {
+	// Set default config
+	cfg := ConfigDefault
+
+	// Override config if provided
+	if len(config) > 0 {
+		cfg = configDefault(config[0])
+	}
+
+	// TODO
+	_ = cfg
+
 	return &Storage{}
 }
 
 // Get value by key
 func (s *Storage) Get(key string) ([]byte, error) {
-	return []byte{}, nil
+	return nil, nil
 }
 
 // Set key with value
diff --git a/postgres/config.go b/postgres/config.go
new file mode 100644
index 00000000..9820dc8e
--- /dev/null
+++ b/postgres/config.go
@@ -0,0 +1,13 @@
+package postgres
+
+// Config defines the config for storage.
+type Config struct {
+}
+
+// ConfigDefault is the default config
+var ConfigDefault = Config{}
+
+// Helper function to set default values
+func configDefault(cfg Config) Config {
+	return cfg
+}
diff --git a/postgres/postgres.go b/postgres/postgres.go
index c5a4ab48..9f96854c 100644
--- a/postgres/postgres.go
+++ b/postgres/postgres.go
@@ -1,28 +1,30 @@
 package postgres
 
-import (
-	"time"
-)
+import "time"
 
 // Storage interface that is implemented by storage providers
 type Storage struct {
 }
 
-// Config defines the config for storage.
-type Config struct {
-}
-
-// ConfigDefault is the default config
-var ConfigDefault = Config{}
-
 // New creates a new storage
 func New(config ...Config) *Storage {
+	// Set default config
+	cfg := ConfigDefault
+
+	// Override config if provided
+	if len(config) > 0 {
+		cfg = configDefault(config[0])
+	}
+
+	// TODO
+	_ = cfg
+
 	return &Storage{}
 }
 
 // Get value by key
 func (s *Storage) Get(key string) ([]byte, error) {
-	return []byte{}, nil
+	return nil, nil
 }
 
 // Set key with value
diff --git a/sqlite3/config.go b/sqlite3/config.go
new file mode 100644
index 00000000..52030b3d
--- /dev/null
+++ b/sqlite3/config.go
@@ -0,0 +1,13 @@
+package sqlite3
+
+// Config defines the config for storage.
+type Config struct {
+}
+
+// ConfigDefault is the default config
+var ConfigDefault = Config{}
+
+// Helper function to set default values
+func configDefault(cfg Config) Config {
+	return cfg
+}
diff --git a/sqlite3/sqlite3.go b/sqlite3/sqlite3.go
index c4cd2dfd..d8a6ad53 100644
--- a/sqlite3/sqlite3.go
+++ b/sqlite3/sqlite3.go
@@ -1,28 +1,30 @@
 package sqlite3
 
-import (
-	"time"
-)
+import "time"
 
 // Storage interface that is implemented by storage providers
 type Storage struct {
 }
 
-// Config defines the config for storage.
-type Config struct {
-}
-
-// ConfigDefault is the default config
-var ConfigDefault = Config{}
-
 // New creates a new storage
 func New(config ...Config) *Storage {
+	// Set default config
+	cfg := ConfigDefault
+
+	// Override config if provided
+	if len(config) > 0 {
+		cfg = configDefault(config[0])
+	}
+
+	// TODO
+	_ = cfg
+
 	return &Storage{}
 }
 
 // Get value by key
 func (s *Storage) Get(key string) ([]byte, error) {
-	return []byte{}, nil
+	return nil, nil
 }
 
 // Set key with value