feat: add example

utils/retry.go

@@ -2,6 +2,7 @@ package utils
 
 import (
 	"math/rand"
+	"reflect"
 	"time"
 )
 
@@ -9,3 +10,18 @@ func CalculateJitter(baseDelay time.Duration, percent float64) time.Duration {
 	jitter := time.Duration(rand.Float64()*percent*float64(baseDelay)) - time.Duration(percent*float64(baseDelay)/2)
 	return baseDelay + jitter
 }
+
+func SizeOf(v any) uintptr {
+	val := reflect.ValueOf(v)
+	if val.Kind() == reflect.Ptr {
+		val = val.Elem()
+	}
+	switch val.Kind() {
+	case reflect.Slice:
+		return uintptr(val.Len()) * val.Type().Elem().Size()
+	case reflect.Map:
+		return uintptr(val.Len()) * (val.Type().Key().Size() + val.Type().Elem().Size())
+	default:
+		return val.Type().Size()
+	}
+}