From bd4d8694dda63dfe8093e605bcb9184231818cad Mon Sep 17 00:00:00 2001
From: anatawa12 <anatawa12@icloud.com>
Date: Fri, 15 Dec 2023 11:24:13 +0900
Subject: [PATCH] perf: early return users/notes and users/featured-notes if me
 is blocked by requesting user (#12663)

---
 .../src/server/api/endpoints/users/featured-notes.ts  | 11 ++++++++---
 .../backend/src/server/api/endpoints/users/notes.ts   |  8 ++++++++
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/packages/backend/src/server/api/endpoints/users/featured-notes.ts b/packages/backend/src/server/api/endpoints/users/featured-notes.ts
index f84148d72..7243aa3b3 100644
--- a/packages/backend/src/server/api/endpoints/users/featured-notes.ts
+++ b/packages/backend/src/server/api/endpoints/users/featured-notes.ts
@@ -51,6 +51,13 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		private cacheService: CacheService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
+			const userIdsWhoBlockingMe = me ? await this.cacheService.userBlockedCache.fetch(me.id) : new Set<string>();
+
+			// early return if me is blocked by requesting user
+			if (userIdsWhoBlockingMe.has(ps.userId)) {
+				return [];
+			}
+
 			let noteIds = await this.featuredService.getPerUserNotesRanking(ps.userId, 50);
 
 			noteIds.sort((a, b) => a > b ? -1 : 1);
@@ -65,11 +72,9 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 
 			const [
 				userIdsWhoMeMuting,
-				userIdsWhoBlockingMe,
 			] = me ? await Promise.all([
 				this.cacheService.userMutingsCache.fetch(me.id),
-				this.cacheService.userBlockedCache.fetch(me.id),
-			]) : [new Set<string>(), new Set<string>()];
+			]) : [new Set<string>()];
 
 			const query = this.notesRepository.createQueryBuilder('note')
 				.where('note.id IN (:...noteIds)', { noteIds: noteIds })
diff --git a/packages/backend/src/server/api/endpoints/users/notes.ts b/packages/backend/src/server/api/endpoints/users/notes.ts
index b32128a8a..b485126ed 100644
--- a/packages/backend/src/server/api/endpoints/users/notes.ts
+++ b/packages/backend/src/server/api/endpoints/users/notes.ts
@@ -86,6 +86,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 
 			if (ps.withReplies && ps.withFiles) throw new ApiError(meta.errors.bothWithRepliesAndWithFiles);
 
+			// early return if me is blocked by requesting user
+			if (me != null) {
+				const userIdsWhoBlockingMe = await this.cacheService.userBlockedCache.fetch(me.id);
+				if (userIdsWhoBlockingMe.has(ps.userId)) {
+					return [];
+				}
+			}
+
 			if (!serverSettings.enableFanoutTimeline) {
 				const timeline = await this.getFromDb({
 					untilId,