Add small client TLS PSK cache (#14039)

cmd/site-replication.go

@@ -1642,7 +1642,8 @@ func newRemoteClusterHTTPTransport() *http.Transport {
 	tr := &http.Transport{
 		Proxy: http.ProxyFromEnvironment,
 		TLSClientConfig: &tls.Config{
-			RootCAs: globalRootCAs,
+			RootCAs:            globalRootCAs,
+			ClientSessionCache: tls.NewLRUClientSessionCache(tlsClientSessionCacheSize),
 		},
 	}
 	return tr