From 23267a3a9648e5e713ac021bf4ebd6d8ed067934 Mon Sep 17 00:00:00 2001
From: Hazelnoot <acomputerdog@gmail.com>
Date: Mon, 5 May 2025 09:36:17 -0400
Subject: [PATCH] await cache update to avoid hammering redis in
 UrlPreviewService.ts

---
 packages/backend/src/server/web/UrlPreviewService.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/backend/src/server/web/UrlPreviewService.ts b/packages/backend/src/server/web/UrlPreviewService.ts
index e192bae2a8..d6151b665a 100644
--- a/packages/backend/src/server/web/UrlPreviewService.ts
+++ b/packages/backend/src/server/web/UrlPreviewService.ts
@@ -172,7 +172,8 @@ export class UrlPreviewService {
 				await this.inferActivityPubLink(summary);
 			}
 
-			this.previewCache.set(cacheKey, summary);
+			// Await this to avoid hammering redis when a bunch of URLs are fetched at once
+			await this.previewCache.set(cacheKey, summary);
 
 			// Cache 1 day (matching redis)
 			reply.header('Cache-Control', 'public, max-age=86400');