From 1ac68dd238d3b169c694adae4aab0ff3a1e0a255 Mon Sep 17 00:00:00 2001
From: Carl Schwan <carl@carlschwan.eu>
Date: Mon, 20 Jul 2026 23:44:22 +0200
Subject: [PATCH] perf(user-display-name): Check memory cache before trying
 redis

Signed-off-by: Carl Schwan <carl@carlschwan.eu>
---
 lib/private/User/Manager.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/private/User/Manager.php b/lib/private/User/Manager.php
index cf832148c920f..12898aef419bd 100644
--- a/lib/private/User/Manager.php
+++ b/lib/private/User/Manager.php
@@ -149,6 +149,10 @@ public function get($uid) {
 	}
 
 	public function getDisplayName(string $uid): ?string {
+		if (isset($this->cachedUsers[$uid])) {
+			return $this->cachedUsers[$uid]->getDisplayName();
+		}
+
 		return $this->displayNameCache->getDisplayName($uid);
 	}