remove TODOs

memkv/memkv.go

@@ -9,9 +9,8 @@ import (
 
 // Store is a generic in-memory key-value store.
 type Store[K comparable, V any] struct {
-	// TODO: should this be part of the underlying data?
-	mu       *sync.RWMutex
 	capacity int
+	mu       *sync.RWMutex
 	data     *underlying.Data[K, V]
 }