From ad862b7991b7bcb019cdec71c149d6f4a74d81b3 Mon Sep 17 00:00:00 2001
From: moonrailgun <moonrailgun@gmail.com>
Date: Sun, 20 Aug 2023 17:34:09 +0800
Subject: [PATCH] perf: optimize db performance and greatly reduce the
 time-consuming fetchConverseMessage request

spec of the message db storage is large
---
 server/models/chat/message.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/server/models/chat/message.ts b/server/models/chat/message.ts
index 083eaefb..817e901e 100644
--- a/server/models/chat/message.ts
+++ b/server/models/chat/message.ts
@@ -33,6 +33,7 @@ class MessageReaction {
   },
 })
 @index({ createdAt: -1 })
+@index({ converseId: 1, _id: -1 }) // for fetchConverseMessage
 export class Message extends TimeStamps implements Base {
   _id: Types.ObjectId;
   id: string;
@@ -79,7 +80,7 @@ export class Message extends TimeStamps implements Base {
     startId: string | null,
     limit = 50
   ) {
-    const conditions: FilterQuery<DocumentType<Message>> = {
+    const conditions: FilterQuery<MessageDocument> = {
       converseId,
     };
     if (startId !== null) {