From 3d13860ec8fea79062ba0c498302cb19143e01f8 Mon Sep 17 00:00:00 2001
From: Hazelnoot <acomputerdog@gmail.com>
Date: Fri, 6 Jun 2025 02:15:31 -0400
Subject: [PATCH] update quantum caches when a user is deleted

---
 packages/backend/src/core/CacheService.ts | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/packages/backend/src/core/CacheService.ts b/packages/backend/src/core/CacheService.ts
index 00d97c7e1d..1fba4f32d0 100644
--- a/packages/backend/src/core/CacheService.ts
+++ b/packages/backend/src/core/CacheService.ts
@@ -138,7 +138,7 @@ export class CacheService implements OnApplicationShutdown {
 	}
 
 	@bindThis
-	private async onUserEvent<E extends 'userChangeSuspendedState' | 'userChangeDeletedState' | 'remoteUserUpdated' | 'localUserUpdated'>(body: InternalEventTypes[E]): Promise<void> {
+	private async onUserEvent<E extends 'userChangeSuspendedState' | 'userChangeDeletedState' | 'remoteUserUpdated' | 'localUserUpdated'>(body: InternalEventTypes[E], _: E, isLocal: boolean): Promise<void> {
 		{
 			{
 				{
@@ -151,6 +151,16 @@ export class CacheService implements OnApplicationShutdown {
 								this.uriPersonCache.delete(k);
 							}
 						}
+						if (isLocal) {
+							await Promise.all([
+								this.userProfileCache.delete(body.id),
+								this.userMutingsCache.delete(body.id),
+								this.userBlockingCache.delete(body.id),
+								this.userBlockedCache.delete(body.id),
+								this.renoteMutingsCache.delete(body.id),
+								this.userFollowingsCache.delete(body.id),
+							]);
+						}
 					} else {
 						this.userByIdCache.set(user.id, user);
 						for (const [k, v] of this.uriPersonCache.entries) {