diff --git a/go/vt/vtgate/engine/cached_size.go b/go/vt/vtgate/engine/cached_size.go
index b002b51a4ac..280556d4315 100644
--- a/go/vt/vtgate/engine/cached_size.go
+++ b/go/vt/vtgate/engine/cached_size.go
@@ -1337,6 +1337,20 @@ func (cached *ThrottleApp) CachedSize(alloc bool) int64 {
 	size += cached.ThrottledAppRule.CachedSize(true)
 	return size
 }
+func (cached *Trace) CachedSize(alloc bool) int64 {
+	if cached == nil {
+		return int64(0)
+	}
+	size := int64(0)
+	if alloc {
+		size += int64(24)
+	}
+	// field Inner vitess.io/vitess/go/vt/vtgate/engine.Primitive
+	if cc, ok := cached.Inner.(cachedObject); ok {
+		size += cc.CachedSize(true)
+	}
+	return size
+}
 func (cached *TransactionStatus) CachedSize(alloc bool) int64 {
 	if cached == nil {
 		return int64(0)