do not save if not necessary

noticed terrible performance in hyperfine traced back to hundreds of unnecessary saves

1 files changed, 4 insertions, 0 deletions

diff --git a/cache/cache.go b/cache/cache.go
index 9af25a5..b4cd989 100644
--- a/cache/cache.go
+++ b/cache/cache.go
@@ -9,6 +9,7 @@ import (
 	"io/fs"
 	"os"
 	"path"
+	"slices"
 	"strings"
 )
 
@@ -138,6 +139,9 @@ func Insert(in *model.State) error {
 	}
 	insert := New(in)
 	result := loaded.Merge(insert)
+	if slices.Equal(loaded.Entries, result.Entries) {
+		return nil
+	}
 	return SaveFile(Path, result)
 }