🐞 fix(mongo): 根据数据库慢日志更新索引

shared/db/LadderMatchRec.ts

@@ -5,6 +5,8 @@ import { LadderDefense, LadderOppPlayerInfo, LadderOppPlayerHeroInfo } from '../
 import { genCode } from '../pubUtils/util';
 
 @index({ battleCode: 1 })
+@index({ roleId1: 1 })
+@index({ roleId2: 1 })
 export default class LadderMatchRec extends BaseModel {
     @prop({ required: true })
     battleCode: string;					// 唯一code