diff --git a/constants.go b/constants.go
index e072515..7d697cc 100644
--- a/constants.go
+++ b/constants.go
@@ -25,9 +25,6 @@ const (
 	envKey      = "env"
 	hostnameKey = "hostname"
 	localIpKey  = "localIP"
-	realmKey    = "realm"
-	regionKey   = "region"
-	azKey       = "az"
 	domainKey   = "domain"
 	goosKey     = "os"
 	goArchKey   = "arch"
diff --git a/event_factory.go b/event_factory.go
index 033045f..0b61aec 100644
--- a/event_factory.go
+++ b/event_factory.go
@@ -25,9 +25,6 @@ const (
 )
 
 var (
-	realm    = ""
-	region   = ""
-	az       = ""
 	domain   = ""
 	localIp  = getLocalIP()
 	hostname = getHostName()
@@ -153,9 +150,6 @@ func NewEventFactory(option ...EventOption) *EventFactory {
 		options: option,
 	}
 
-	realm = getDefaultIfEmptyString(os.Getenv("REALM"), "*")
-	region = getDefaultIfEmptyString(os.Getenv("REGION"), "*")
-	az = getDefaultIfEmptyString(os.Getenv("AZ"), "*")
 	domain = getDefaultIfEmptyString(os.Getenv("DOMAIN"), "*")
 
 	return factory
diff --git a/event_zap.go b/event_zap.go
index 9d8d922..adb38ca 100644
--- a/event_zap.go
+++ b/event_zap.go
@@ -689,9 +689,6 @@ func (event *eventZap) envToMapObjectEncoder() *zapcore.MapObjectEncoder {
 	enc := zapcore.NewMapObjectEncoder()
 	enc.AddString(hostnameKey, hostname)
 	enc.AddString(localIpKey, localIp)
-	enc.AddString(realmKey, realm)
-	enc.AddString(regionKey, region)
-	enc.AddString(azKey, az)
 	enc.AddString(domainKey, domain)
 	enc.AddString(goosKey, goos)
 	enc.AddString(goArchKey, goArch)
diff --git a/example/example.go b/example/example.go
index a8aee47..1d69a98 100644
--- a/example/example.go
+++ b/example/example.go
@@ -43,8 +43,8 @@ var (
 )
 
 func main() {
-	withEventFlattenEncoding()
-	//withEventConsoleEncoding()
+	//withEventFlattenEncoding()
+	withEventConsoleEncoding()
 	//withEventJSONEncoding()
 	//withEventHelper()
 }