diff --git a/maker/golang/cmd/bench.go b/maker/golang/cmd/bench.go
index a008a72..851bfd5 100644
--- a/maker/golang/cmd/bench.go
+++ b/maker/golang/cmd/bench.go
@@ -93,6 +93,8 @@ func Bench(sCmd string) {
 	defer handle.Close()
 
 	var rgCache = xdb.NewRegionCache()
+	defer rgCache.Clean()
+
 	var count, errCount, tStart = 0, 0, time.Now()
 	slog.Info("Bench start", "xdbPath", dbFile, "srcPath", srcFile)
 	_, _, iErr := xdb.IterateSegments(handle, false, func(l string) {
diff --git a/maker/golang/xdb/editor.go b/maker/golang/xdb/editor.go
index e1bc7d7..959a807 100644
--- a/maker/golang/xdb/editor.go
+++ b/maker/golang/xdb/editor.go
@@ -416,4 +416,5 @@ func (e *Editor) SaveToFile(dstFile string) error {
 
 func (e *Editor) Close() {
 	_ = e.srcHandle.Close()
+	e.rgCache.Clean()
 }
diff --git a/maker/golang/xdb/maker.go b/maker/golang/xdb/maker.go
index a9aea1c..5772aa2 100644
--- a/maker/golang/xdb/maker.go
+++ b/maker/golang/xdb/maker.go
@@ -414,5 +414,7 @@ func (m *Maker) End() error {
 		return err
 	}
 
+	m.regionCache.Clean()
+
 	return nil
 }
diff --git a/maker/golang/xdb/processor.go b/maker/golang/xdb/processor.go
index af2f20e..386b04b 100644
--- a/maker/golang/xdb/processor.go
+++ b/maker/golang/xdb/processor.go
@@ -156,5 +156,7 @@ func (p *Processor) End() error {
 		return err
 	}
 
+	p.rgCache.Clean()
+
 	return nil
 }