diff --git a/pkgs/mq/client.go b/pkgs/mq/client.go
index 078cdc2..8709347 100644
--- a/pkgs/mq/client.go
+++ b/pkgs/mq/client.go
@@ -300,7 +300,7 @@ func (c *RabbitMQTransport) Close() error {
 
 // 发送消息并等待回应。因为无法自动推断出TResp的类型，所以将其放在第一个手工填写，之后的TBody可以自动推断出来
 func Request[TSvc any, TReq MessageBody, TResp MessageBody](_ func(svc TSvc, msg TReq) (TResp, *CodeMessage), cli RoundTripper, req TReq, opts ...RequestOption) (TResp, error) {
-	opt := RequestOption{Timeout: time.Second * 15}
+	opt := RequestOption{Timeout: time.Second * 15, KeepAlive: true}
 	if len(opts) > 0 {
 		opt = opts[0]
 	}
diff --git a/sdks/storage/models.go b/sdks/storage/models.go
index 9c60ce1..577479b 100644
--- a/sdks/storage/models.go
+++ b/sdks/storage/models.go
@@ -71,7 +71,7 @@ func (b *RepRedundancy) Value() (driver.Value, error) {
 	return serder.ObjectToJSONEx[Redundancy](b)
 }
 
-var DefaultECRedundancy = *NewECRedundancy(2, 3, 1024*1024*5)
+var DefaultECRedundancy = *NewECRedundancy(3, 5, 1024*1024*5)
 
 type ECRedundancy struct {
 	serder.Metadata `union:"ec"`
diff --git a/utils/time2/measurement.go b/utils/time2/measurement.go
new file mode 100644
index 0000000..f5f77c9
--- /dev/null
+++ b/utils/time2/measurement.go
@@ -0,0 +1,113 @@
+package time2
+
+import (
+	"fmt"
+	"path"
+	"runtime"
+	"strings"
+	"time"
+)
+
+type Measurement struct {
+	startTime     time.Time
+	lastPointTime time.Time
+	printer       func(string)
+	on            bool
+	title         string
+}
+
+func NewMeasurement(printer func(string)) Measurement {
+	return Measurement{
+		printer: printer,
+	}
+}
+
+func (m *Measurement) Begin(on bool, title ...string) {
+	if m == nil {
+		return
+	}
+
+	m.on = on
+	m.title = strings.Join(title, ".")
+
+	if on {
+		m.startTime = time.Now()
+		m.lastPointTime = m.startTime
+
+		_, file, line, ok := runtime.Caller(1)
+
+		titlePart := ""
+		if m.title != "" {
+			titlePart = fmt.Sprintf(":%s", m.title)
+		}
+
+		if ok {
+			m.printer(fmt.Sprintf("[BEGIN%v]<%v:%v>", titlePart, path.Base(file), line))
+		} else {
+			m.printer(fmt.Sprintf("[BEGIN%v]<UNKNOWN>", titlePart))
+		}
+	}
+}
+
+func (m *Measurement) Point(desc ...string) {
+	if m == nil {
+		return
+	}
+
+	if m.on {
+		m.printer(m.makePointString(strings.Join(desc, ".")))
+	}
+}
+
+func (m *Measurement) makePointString(desc string) string {
+	last := m.lastPointTime
+	now := time.Now()
+	m.lastPointTime = now
+
+	_, file, line, ok := runtime.Caller(2)
+
+	titlePart := ""
+	if m.title != "" {
+		titlePart = fmt.Sprintf("(%s)", m.title)
+	}
+
+	if desc != "" {
+		desc = fmt.Sprintf("@%s", desc)
+	}
+
+	if ok {
+		return fmt.Sprintf("%v {%v/%v} %v<%v:%v>", titlePart, now.Sub(last), now.Sub(m.startTime), desc, path.Base(file), line)
+	}
+
+	return fmt.Sprintf("{%v/%v}%v<UNKNOWN>", now.Sub(last), now.Sub(m.startTime), desc)
+}
+
+func (m *Measurement) End(descs ...string) {
+	if m == nil {
+		return
+	}
+
+	if m.on {
+		last := m.lastPointTime
+		now := time.Now()
+		m.lastPointTime = now
+
+		_, file, line, ok := runtime.Caller(1)
+
+		titlePart := ""
+		if m.title != "" {
+			titlePart = fmt.Sprintf(":%s", m.title)
+		}
+
+		desc := strings.Join(descs, ".")
+		if desc != "" {
+			desc = fmt.Sprintf("@%s", desc)
+		}
+
+		if ok {
+			m.printer(fmt.Sprintf("[END%v] {%v/%v} %v<%v:%v>", titlePart, now.Sub(last), now.Sub(m.startTime), desc, path.Base(file), line))
+		} else {
+			m.printer(fmt.Sprintf("[END%v] {%v/%v} %v<UNKNOWN>", titlePart, now.Sub(last), now.Sub(m.startTime), desc))
+		}
+	}
+}