Backport #20817

store/cachemulti/store.go

@@ -3,6 +3,7 @@
 import (
 	"fmt"
 	"io"
+	"sync"
 
 	dbm "github.com/cometbft/cometbft-db"
 
@@ -122,9 +123,15 @@
 // Write calls Write on each underlying store.
 func (cms Store) Write() {
 	cms.db.Write()
+	wg := sync.WaitGroup{}
+	wg.Add(len(cms.stores))
 	for _, store := range cms.stores {
-		store.Write()
+		go func(s types.CacheWrap) {
+			defer wg.Done()
+			store.Write()
+		}(store)
 	}
+	wg.Wait()
 }
 
 // Implements CacheWrapper.