diff --git a/packages/backend/src/db/postgre.ts b/packages/backend/src/db/postgre.ts
index 066a3c673..5fd1f95cc 100644
--- a/packages/backend/src/db/postgre.ts
+++ b/packages/backend/src/db/postgre.ts
@@ -85,7 +85,7 @@ class MyCustomLogger implements Logger {
 
 	public logQuery(query: string, parameters?: any[]) {
 		if (envOption.verbose) {
-			sqlLogger.info(this.highlight(query));
+			sqlLogger.info(this.highlight(query).substring(0, 100));
 		}
 	}
 
diff --git a/packages/backend/src/remote/activitypub/renderer/note.ts b/packages/backend/src/remote/activitypub/renderer/note.ts
index c3d9e120d..78190751f 100644
--- a/packages/backend/src/remote/activitypub/renderer/note.ts
+++ b/packages/backend/src/remote/activitypub/renderer/note.ts
@@ -53,9 +53,7 @@ export default async function renderNote(note: Note, dive = true, isTalk = false
 		}
 	}
 
-	const user = await Users.findOneOrFail(note.userId);
-
-	const attributedTo = `${config.url}/users/${user.id}`;
+	const attributedTo = `${config.url}/users/${note.userId}`;
 
 	const mentions = (JSON.parse(note.mentionedRemoteUsers) as IMentionedRemoteUsers).map(x => x.uri);
 
diff --git a/packages/backend/src/server/activitypub.ts b/packages/backend/src/server/activitypub.ts
index f2d320bb6..c0a9b3772 100644
--- a/packages/backend/src/server/activitypub.ts
+++ b/packages/backend/src/server/activitypub.ts
@@ -67,6 +67,7 @@ router.get('/notes/:note', async (ctx, next) => {
 	if (!isActivityPubReq(ctx)) return await next();
 
 	// TODO: typeorm 3.0にしたら .then(x => x || null) は消せる
+	// nginxとかでキャッシュしてくれそうだからそもそもnode側でのキャッシュ不要かも？
 	const note = await noteCache.fetch(ctx.params.note, () => Notes.findOne({
 		id: ctx.params.note,
 		visibility: In(['public' as const, 'home' as const]),
@@ -167,6 +168,7 @@ router.get('/users/:user', async (ctx, next) => {
 	const userId = ctx.params.user;
 
 	// TODO: typeorm 3.0にしたら .then(x => x || null) は消せる
+	// nginxとかでキャッシュしてくれそうだからそもそもnode側でのキャッシュ不要かも？
 	const user = await userCache.fetch(userId, () => Users.findOne({
 		id: userId,
 		host: null,