diff --git a/main.go b/main.go
index 00e9d28..ee194f2 100644
--- a/main.go
+++ b/main.go
@@ -25,7 +25,21 @@ var logLevelMap map[string]int = map[string]int{
 var loggerMap map[string]*Logger = map[string]*Logger{}
 var appenderFactoryMap map[string]func(LogAppenderConfig) *LoggerAppender = map[string]func(LogAppenderConfig) *LoggerAppender{}
 var appenders map[string]*LoggerAppender = map[string]*LoggerAppender{}
-var loggerConfig LoggersConfig
+var loggerConfig LoggersConfig = LoggersConfig{
+	Appenders: map[string]LogAppenderConfig{
+		"console": {
+			Type:      "console",
+			Formatter: "text",
+			Options:   map[string]interface{}{},
+		},
+	},
+	Categories: map[string]LogConfig{
+		"default": {
+			Level:     "error",
+			Appenders: []string{"console"},
+		},
+	},
+}
 
 type LogAppenderConfig struct {
 	Type      string                 `json:"type"`
@@ -107,13 +121,11 @@ func GetLogger(name string) *Logger {
 		if ok {
 			return makeLogger(name, logConfig)
 		}
-		if name == "default" {
-			return defaultLogger
-		}
-		l := *GetLogger("default")
+		logConfig, ok = loggerConfig.Categories["default"]
+		l := makeLogger(name, logConfig)
 		l.category = name
-		loggerMap[name] = &l
-		return &l
+		loggerMap[name] = l
+		return l
 	}
 }
 
@@ -133,9 +145,15 @@ func makeLogger(name string, config LogConfig) *Logger {
 	loggerMap[name] = logger
 	return logger
 }
-func Configure(config LoggersConfig) {
+
+func ReconfigLoggers(config LoggersConfig) {
+	validateConfig(config)
 	loggerConfig = config
 	for name, appenderConfig := range loggerConfig.Appenders {
+		oldappender, ok := appenders[name]
+		if ok {
+			(*oldappender).Close()
+		}
 		appenderFactory, ok := appenderFactoryMap[appenderConfig.Type]
 		if ok {
 			appenders[name] = appenderFactory(appenderConfig)
@@ -143,12 +161,38 @@ func Configure(config LoggersConfig) {
 			appenders[name] = &consoleAppender
 		}
 	}
-	for name, _ := range loggerConfig.Categories {
-		GetLogger(name)
+	for name, logger := range loggerMap {
+		logConfig, ok := loggerConfig.Categories[name]
+		if !ok {
+			logConfig, _ = loggerConfig.Categories["default"]
+		}
+		logger.level = logLevelMap[strings.ToLower(logConfig.Level)]
+		if len(logConfig.Appenders) == 0 {
+			logger.appenders = []*LoggerAppender{&consoleAppender}
+		} else {
+			logger.appenders = make([]*LoggerAppender, len(logConfig.Appenders))
+			for i, appenderName := range logConfig.Appenders {
+				logger.appenders[i] = appenders[appenderName]
+			}
+		}
 	}
 }
+func validateConfig(config LoggersConfig) {
+	_, ok := loggerConfig.Categories["default"]
+	if !ok {
+		panic("default logger config not found")
+	}
+}
+func Configure(config LoggersConfig) {
+	validateConfig(config)
+	ReconfigLoggers(config)
+}
 
 func RegistAppender(typeName string, appenderCreatCb func(LogAppenderConfig) *LoggerAppender) {
 
 	appenderFactoryMap[typeName] = appenderCreatCb
 }
+
+func init() {
+	loggerMap["default"] = defaultLogger
+}
diff --git a/main_test.go b/main_test.go
index 60a9b3c..b4a0c2d 100644
--- a/main_test.go
+++ b/main_test.go
@@ -5,6 +5,12 @@ import "testing"
 
 func TestGetLogger(t *testing.T) {
 	// Initialize loggerMap and loggerConfig
+
+	dl := GetLogger("default")
+	if dl != defaultLogger {
+		t.Errorf("GetLogger(\"defult\") should return defaultLogger")
+	}
+	dl.Error("test")
 	Configure(LoggersConfig{
 		Appenders: map[string]LogAppenderConfig{
 			"console": {
@@ -24,12 +30,10 @@ func TestGetLogger(t *testing.T) {
 			},
 		},
 	})
-	dl := GetLogger("default")
-	// if dl != defaultLogger {
-	// 	t.Errorf("GetLogger(\"defult\") should return defaultLogger")
-	// }
-	dl.Error("test")
-
+	dl.Info("test")
+	if dl.level != Info {
+		t.Errorf("GetLogger(\"default\") should return defaultLogger")
+	}
 	al := GetLogger("app")
 
 	if al == dl {