feat: update default engine value and improve RedisDB address annotation

Author: webster-swift

internal/config/config.go

@@ -85,7 +85,7 @@ type (
 	}
 
 	KeyValue struct {
-		Engine KeyValueEngine `yaml:"engine" required:"true" validate:"oneof=redis in_memory" example:"redis / in_memory" default:"redis"`
+		Engine KeyValueEngine `yaml:"engine" required:"true" validate:"oneof=redis in_memory" example:"redis / in_memory" default:"in_memory"`
 	}
 
 	Transactions struct {

internal/config/database.go

@@ -25,7 +25,7 @@ func (conf PostgresDB) Engine() string {
 }
 
 type RedisDB struct {
-	Addr     string `validate:"required" usage:"storage address in format ip:port"`
+	Addr     string `yaml:"addr" usage:"storage address in format ip:port"`
 	User     string `secret:"true" usage:"storage user password"`
 	Password string `secret:"true" usage:"storage db name"`
 	DBIndex  int    `yaml:"db_index" usage:"index of database"`