diff --git a/app.go b/app.go
index c82a87b..ae6e1c6 100644
--- a/app.go
+++ b/app.go
@@ -109,10 +109,14 @@ func (s *Service) injectVars(v any) {
 			continue
 		}
 		fieldType := refType.Field(i)
-		if fieldType.Type.Kind() != reflect.Ptr {
+		if !(fieldType.Type.Kind() != reflect.Ptr || fieldType.Type.Kind() != reflect.Interface) {
 			continue
 		}
 		for _, rv := range s.refValues {
+			if fieldType.Type.Kind() == reflect.Interface && rv.Type().Implements(fieldType.Type) {
+				refValue.Field(i).Set(rv)
+				break
+			}
 			if fieldType.Type == rv.Type() {
 				refValue.Field(i).Set(rv)
 				break
@@ -123,7 +127,10 @@ func (s *Service) injectVars(v any) {
 
 func (s *Service) preStart(ctx context.Context) (err error) {
 	s.Logger().Info(ctx, "starting")
+	s.refValues = append(s.refValues, s.opts.injectVars...)
+	s.refValues = append(s.refValues, reflect.ValueOf(s.Logger()))
 	for _, ptr := range s.opts.servers {
+		s.injectVars(ptr)
 		s.refValues = append(s.refValues, reflect.ValueOf(ptr))
 	}
 	if s.opts.registry != nil {
@@ -185,7 +192,7 @@ func (s *Service) preStart(ctx context.Context) (err error) {
 						o.Context = ctx
 						o.TTL = s.opts.registrarTimeout
 					}); err != nil {
-						s.Logger().Warn(ctx, "service register error: %v", err)
+						s.Logger().Warnf(ctx, "service register error: %v", err)
 					}
 				}
 			}
@@ -206,14 +213,14 @@ func (s *Service) preStop() (err error) {
 	}()
 	for _, srv := range s.opts.servers {
 		if err = srv.Stop(ctx); err != nil {
-			s.Logger().Warn(ctx, "server stop error: %v", err)
+			s.Logger().Warnf(ctx, "server stop error: %v", err)
 		}
 	}
 	if s.opts.registry != nil {
 		if err = s.opts.registry.Deregister(s.service, func(o *registry.DeregisterOptions) {
 			o.Context = ctx
 		}); err != nil {
-			s.Logger().Warn(ctx, "server deregister error: %v", err)
+			s.Logger().Warnf(ctx, "server deregister error: %v", err)
 		}
 	}
 	s.Logger().Info(ctx, "stopped")
diff --git a/options.go b/options.go
index bbd1103..14284bf 100644
--- a/options.go
+++ b/options.go
@@ -3,6 +3,7 @@ package aeus
 import (
 	"context"
 	"maps"
+	"reflect"
 	"time"
 
 	"git.nobla.cn/golang/aeus/pkg/logger"
@@ -24,6 +25,7 @@ type options struct {
 	registry         registry.Registry
 	serviceLoader    ServiceLoader
 	stopTimeout      time.Duration
+	injectVars       []reflect.Value
 }
 
 func WithName(name string) Option {
@@ -77,6 +79,14 @@ func WithDebug(debug bool) Option {
 	}
 }
 
+func WithInjectVars(vars ...any) Option {
+	return func(o *options) {
+		for _, v := range vars {
+			o.injectVars = append(o.injectVars, reflect.ValueOf(v))
+		}
+	}
+}
+
 func WithServiceLoader(loader ServiceLoader) Option {
 	return func(o *options) {
 		o.serviceLoader = loader
diff --git a/pkg/logger/logger.go b/pkg/logger/logger.go
index 6ffeb33..3b7f8c7 100644
--- a/pkg/logger/logger.go
+++ b/pkg/logger/logger.go
@@ -3,6 +3,7 @@ package logger
 import (
 	"context"
 	"log/slog"
+	"os"
 )
 
 var (
@@ -10,32 +11,56 @@ var (
 )
 
 func init() {
-	log = NewLogger(slog.Default())
+	log = NewLogger(slog.New(
+		slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
+			Level: slog.LevelDebug,
+		}),
+	))
 }
 
 type Logger interface {
-	Debug(ctx context.Context, format string, args ...any)
+	Debug(ctx context.Context, format string, args ...any) //Structured context as loosely typed key-value pairs.
+	Debugf(ctx context.Context, format string, args ...any)
 	Info(ctx context.Context, format string, args ...any)
+	Infof(ctx context.Context, format string, args ...any)
 	Warn(ctx context.Context, format string, args ...any)
+	Warnf(ctx context.Context, format string, args ...any)
 	Error(ctx context.Context, format string, args ...any)
+	Errorf(ctx context.Context, format string, args ...any)
 }
 
 func Debug(ctx context.Context, format string, args ...any) {
 	log.Debug(ctx, format, args...)
 }
 
+func Debugf(ctx context.Context, format string, args ...any) {
+	log.Debugf(ctx, format, args...)
+}
+
 func Info(ctx context.Context, format string, args ...any) {
-	log.Debug(ctx, format, args...)
+	log.Info(ctx, format, args...)
+}
+
+func Infof(ctx context.Context, format string, args ...any) {
+	log.Infof(ctx, format, args...)
 }
 
 func Warn(ctx context.Context, format string, args ...any) {
-	log.Debug(ctx, format, args...)
+	log.Warn(ctx, format, args...)
+}
+
+func Warnf(ctx context.Context, format string, args ...any) {
+	log.Warnf(ctx, format, args...)
 }
 
 func Error(ctx context.Context, format string, args ...any) {
 	log.Debug(ctx, format, args...)
 }
 
+func Errorf(ctx context.Context, format string, args ...any) {
+	log.Errorf(ctx, format, args...)
+}
+
 func Default() Logger {
 	return log
 }
diff --git a/pkg/logger/slog.go b/pkg/logger/slog.go
index 59b57a0..ab55420 100644
--- a/pkg/logger/slog.go
+++ b/pkg/logger/slog.go
@@ -11,18 +11,34 @@ type logger struct {
 }
 
 func (l *logger) Debug(ctx context.Context, msg string, args ...any) {
+	l.log.DebugContext(ctx, msg, args...)
+}
+
+func (l *logger) Debugf(ctx context.Context, msg string, args ...any) {
 	l.log.DebugContext(ctx, fmt.Sprintf(msg, args...))
 }
 
 func (l *logger) Info(ctx context.Context, msg string, args ...any) {
+	l.log.InfoContext(ctx, msg, args...)
+}
+
+func (l *logger) Infof(ctx context.Context, msg string, args ...any) {
 	l.log.InfoContext(ctx, fmt.Sprintf(msg, args...))
 }
 
 func (l *logger) Warn(ctx context.Context, msg string, args ...any) {
+	l.log.WarnContext(ctx, msg, args...)
+}
+
+func (l *logger) Warnf(ctx context.Context, msg string, args ...any) {
 	l.log.WarnContext(ctx, fmt.Sprintf(msg, args...))
 }
 
 func (l *logger) Error(ctx context.Context, msg string, args ...any) {
+	l.log.ErrorContext(ctx, msg, args...)
+}
+
+func (l *logger) Errorf(ctx context.Context, msg string, args ...any) {
 	l.log.ErrorContext(ctx, fmt.Sprintf(msg, args...))
 }
 
diff --git a/transport/cli/server.go b/transport/cli/server.go
index 87f734f..8dd1fa8 100644
--- a/transport/cli/server.go
+++ b/transport/cli/server.go
@@ -32,6 +32,7 @@ type Server struct {
 	uri            *url.URL
 	exitFlag       int32
 	middleware     []middleware.Middleware
+	Logger         logger.Logger
 }
 
 func (svr *Server) Use(middlewares ...middleware.Middleware) {
@@ -134,7 +135,7 @@ func (s *Server) execute(ctx *Context, frame *Frame) (err error) {
 func (svr *Server) nextSequence() int64 {
 	svr.sequenceLocker.Lock()
 	defer svr.sequenceLocker.Unlock()
-	if svr.sequence >= math.MaxInt64 {
+	if svr.sequence == math.MaxInt64 {
 		svr.sequence = 1
 	}
 	svr.sequence++
@@ -208,10 +209,16 @@ func (s *Server) serve() (err error) {
 
 func (s *Server) Start(ctx context.Context) (err error) {
 	s.ctx = ctx
+	if s.opts.logger != nil {
+		s.Logger = s.opts.logger
+	}
+	if s.Logger == nil {
+		s.Logger = logger.Default()
+	}
 	if err = s.createListener(); err != nil {
 		return
 	}
-	s.opts.logger.Info(ctx, "cli server listen on: %s", s.uri.Host)
+	s.Logger.Infof(ctx, "cli server listen on: %s", s.uri.Host)
 	s.Handle("/help", "Display help information", func(ctx *Context) (err error) {
 		return ctx.Success(s.router.String())
 	})
@@ -224,7 +231,9 @@ func (s *Server) Stop(ctx context.Context) (err error) {
 		return
 	}
 	if s.listener != nil {
-		err = s.listener.Close()
+		if err = s.listener.Close(); err != nil {
+			s.Logger.Warnf(ctx, "cli listener close error: %v", err)
+		}
 	}
 	s.ctxMap.Range(func(key, value any) bool {
 		if ctx, ok := value.(*Context); ok {
@@ -232,6 +241,7 @@ func (s *Server) Stop(ctx context.Context) (err error) {
 		}
 		return true
 	})
+	s.Logger.Info(ctx, "cli server stopped")
 	return
 }
 
@@ -240,7 +250,6 @@ func New(cbs ...Option) *Server {
 		opts: &options{
 			network: "tcp",
 			address: ":0",
-			logger:  logger.Default(),
 		},
 		uri:    &url.URL{Scheme: "cli"},
 		router: newRouter(""),
diff --git a/transport/grpc/server.go b/transport/grpc/server.go
index 2468526..8775cf7 100644
--- a/transport/grpc/server.go
+++ b/transport/grpc/server.go
@@ -25,6 +25,7 @@ type Server struct {
 	serve       *grpc.Server
 	listener    net.Listener
 	middlewares []middleware.Middleware
+	Logger      logger.Logger
 }
 
 func (s *Server) createListener() (err error) {
@@ -107,11 +108,16 @@ func (s *Server) Use(middlewares ...middleware.Middleware) {
 
 func (s *Server) Start(ctx context.Context) (err error) {
 	s.ctx = ctx
+	if s.opts.logger != nil {
+		s.Logger = s.opts.logger
+	}
+	if s.Logger == nil {
+		s.Logger = logger.Default()
+	}
 	if err = s.createListener(); err != nil {
 		return
 	}
-	s.opts.logger.Info(ctx, "grpc server listen on: %s", s.uri.Host)
-
+	s.Logger.Infof(ctx, "grpc server listen on: %s", s.uri.Host)
 	reflection.Register(s.serve)
 	s.serve.Serve(s.listener)
 	return
@@ -130,7 +136,7 @@ func (s *Server) RegisterService(sd *grpc.ServiceDesc, ss any) {
 
 func (s *Server) Stop(ctx context.Context) (err error) {
 	s.serve.GracefulStop()
-	s.opts.logger.Info(s.ctx, "grpc server stopped")
+	s.Logger.Infof(s.ctx, "grpc server stopped")
 	return
 }
 
@@ -138,7 +144,6 @@ func New(cbs ...Option) *Server {
 	svr := &Server{
 		opts: &options{
 			network:  "tcp",
-			logger:   logger.Default(),
 			grpcOpts: make([]grpc.ServerOption, 0, 10),
 		},
 		uri: &url.URL{
diff --git a/transport/http/server.go b/transport/http/server.go
index 3f3e8c0..8d2391e 100644
--- a/transport/http/server.go
+++ b/transport/http/server.go
@@ -36,6 +36,7 @@ type Server struct {
 	listener    net.Listener
 	fs          *filesystem
 	middlewares []middleware.Middleware
+	Logger      logger.Logger
 }
 
 func (s *Server) Endpoint(ctx context.Context) (string, error) {
@@ -156,7 +157,6 @@ func (s *Server) staticHandle(ctx *gin.Context, fp http.File) {
 	}
 	http.ServeContent(ctx.Writer, ctx.Request, path.Base(uri), s.fs.modtime, fp)
 	ctx.Abort()
-	return
 }
 
 func (s *Server) notFoundHandle(ctx *gin.Context) {
@@ -255,6 +255,12 @@ func (s *Server) Start(ctx context.Context) (err error) {
 		Addr:    s.opts.address,
 		Handler: s.engine,
 	}
+	if s.opts.logger != nil {
+		s.Logger = s.opts.logger
+	}
+	if s.Logger == nil {
+		s.Logger = logger.Default()
+	}
 	s.ctx = ctx
 	if s.opts.debug {
 		s.engine.Handle(http.MethodGet, "/debug/pprof/", s.wrapHandle(pprof.Index))
@@ -271,7 +277,7 @@ func (s *Server) Start(ctx context.Context) (err error) {
 		return
 	}
 	s.engine.NoRoute(s.notFoundHandle)
-	s.opts.logger.Info(ctx, "http server listen on: %s", s.uri.Host)
+	s.Logger.Infof(ctx, "http server listen on: %s", s.uri.Host)
 	if s.opts.certFile != "" && s.opts.keyFile != "" {
 		s.uri.Scheme = "https"
 		err = s.serve.ServeTLS(s.listener, s.opts.certFile, s.opts.keyFile)
@@ -286,7 +292,7 @@ func (s *Server) Start(ctx context.Context) (err error) {
 
 func (s *Server) Stop(ctx context.Context) (err error) {
 	err = s.serve.Shutdown(ctx)
-	s.opts.logger.Info(ctx, "http server stopped")
+	s.Logger.Infof(ctx, "http server stopped")
 	return
 }
 
@@ -295,7 +301,6 @@ func New(cbs ...Option) *Server {
 		uri: &url.URL{Scheme: "http"},
 		opts: &options{
 			network: "tcp",
-			logger:  logger.Default(),
 		},
 	}
 	port, _ := strconv.Atoi(os.Getenv("HTTP_PORT"))