[Server] Some performance improvements

4 files changed, 26 insertions, 6 deletions

diff --git a/src/api/endpoints/users/followers.js b/src/api/endpoints/users/followers.js
index fdb33b5328..5e11613c52 100644
--- a/src/api/endpoints/users/followers.js
+++ b/src/api/endpoints/users/followers.js
@@ -47,6 +47,10 @@ module.exports = (params, me) =>
 	// Lookup user
 	const user = await User.findOne({
 		_id: new mongo.ObjectID(userId)
+	}, {
+		fields: {
+			_id: true
+		}
 	});
 
 	if (user === null) {
diff --git a/src/api/endpoints/users/following.js b/src/api/endpoints/users/following.js
index 7849456e62..7b81cc4f3b 100644
--- a/src/api/endpoints/users/following.js
+++ b/src/api/endpoints/users/following.js
@@ -47,6 +47,10 @@ module.exports = (params, me) =>
 	// Lookup user
 	const user = await User.findOne({
 		_id: new mongo.ObjectID(userId)
+	}, {
+		fields: {
+			_id: true
+		}
 	});
 
 	if (user === null) {
diff --git a/src/api/endpoints/users/posts.js b/src/api/endpoints/users/posts.js
index 6a612dc8df..140c188390 100644
--- a/src/api/endpoints/users/posts.js
+++ b/src/api/endpoints/users/posts.js
@@ -67,10 +67,16 @@ module.exports = (params, me) =>
 		return rej('cannot set since_id and max_id');
 	}
 
+	const q = userId != null
+		? { _id: new mongo.ObjectID(userId) }
+		: { username_lower: username.toLowerCase() } ;
+
 	// Lookup user
-	const user = userId !== null
-		? await User.findOne({ _id: new mongo.ObjectID(userId) })
-		: await User.findOne({ username_lower: username.toLowerCase() });
+	const user = await User.findOne(q, {
+		fields: {
+			_id: true
+		}
+	});
 
 	if (user === null) {
 		return rej('user not found');
diff --git a/src/api/endpoints/users/show.js b/src/api/endpoints/users/show.js
index 43d6e700a5..bc7e3a9d5b 100644
--- a/src/api/endpoints/users/show.js
+++ b/src/api/endpoints/users/show.js
@@ -38,10 +38,16 @@ module.exports = (params, me) =>
 		return rej('incorrect user_id');
 	}
 
+	const q = userId != null
+		? { _id: new mongo.ObjectID(userId) }
+		: { username_lower: username.toLowerCase() } ;
+
 	// Lookup user
-	const user = userId !== null
-		? await User.findOne({ _id: new mongo.ObjectID(userId) })
-		: await User.findOne({ username_lower: username.toLowerCase() });
+	const user = await User.findOne(q, {
+		fields: {
+			data: false
+		}
+	});
 
 	if (user === null) {
 		return rej('user not found');