SOCIAL MEDIA APP

Project Title.
MongoDB Aggregation Performance Optimization Project Description.
We are experiencing significant delays with a MongoDB aggregation pipeline in our application.
The specific controller takes about 36 seconds to complete when a user has a large amount of chat data in the database.
We need a MongoDB expert to review and optimize the aggregation pipeline for improved performance.
Details.
Our application is built using Node.
s with Mongoose as the ODM for MongoDB.
The current issue arises when retrieving a user's chat list.
The aggregation pipeline fetches chat messages for a given user, including related user information and performs various operations like sorting, grouping, and filtering based on certain criteria.
Current Function.
Here’s the function that handles the retrieval of user chats.
javascript Copy code const userChatList = async (userId, page, language) => { try { const user = await [login to view URL](userId); if (!user) { throw 'User not found'; } const pageNb = parseInt(page) || 1; let limit = 10; if (['affiliate', 'admin'].
ncludes([login to view URL])) { limit = 20; } if (pageNb throw 'Invalid page'; } const startIndex = (pageNb - 1) * limit; let matchLanguage = {}; if (language) { matchLanguage = { $or.
[{ '[login to view URL]'.
language }, { '[login to view URL]'.
language },], }; } const aggregatedChats = await [login to view URL]([{ $match.
{ $or.
[{ fromUser.
userId }, { toUser.
userId }], }, }, { $lookup.
{ from.
'users', localField.
'fromUser', foreignField.
'_id', as.
'fromUserDetails', }, }, { $lookup.
{ from.
'users', localField.
'toUser', foreignField.
'_id', as.
'toUserDetails', }, }, { $unwind.
'$fromUserDetails', }, { $unwind.
'$toUserDetails', }, { $match.
matchLanguage, }, { $sort.
{ createdAt.
-1 }, }, { $group.
{ _id.
{ $cond.
[{ $eq.
['$fromUser', userId] }, '$toUser', '$fromUser'], }, lastMessage.
{ $first.
'$$ROOT' }, }, }, { $sort.
{ '[login to view URL]'.
-1 }, }, { $skip.
startIndex, }, { $limit.
limit, },]); // Further processing and emitting results via [login to view URL] } catch (error) { [login to view URL](error); throw error; } }; Performance Results.
Total Time.
s Chat Aggregation.
s chats model.
`const mongoose = require('mongoose'); const chatSchema = new [login to view URL]({ fromUser.
{ type.
[login to view URL], ref.
'User', }, toUser.
{ type.
[login to view URL], ref.
'User', }, type.
{ type.
String, enum.
['text', 'audio', 'image', 'video'], }, text.
{ type.
String, }, voice.
{ type.
String, }, image.
{ type.
String, }, video.
{ video.
{ type.
String }, thumbnail.
{ type.
String }, }, audio.
{ type.
String, }, wasLocked.
{ type.
Boolean, default.
false, }, isLocked.
{ type.
Boolean, default.
false, }, diamonds.
{ type.
Number, }, isRead.
{ type.
Boolean, default.
false, }, isSubscribed.
{ type.
Boolean, default.
false, }, }, { timestamps.
true, }); // Compound index for fromUser and toUser [login to view URL]({ fromUser.
1, toUser.
1 }); // Index for createdAt for sorting [login to view URL]({ createdAt.
-1 }); [login to view URL]({ toUser.
1, createdAt.
-1 }); [login to view URL] = [login to view URL]('Chat', chatSchema); ` Requirements.
Review and Optimize Aggregation Pipeline.
We need you to review the existing aggregation pipeline and suggest improvements to reduce the execution time.
Indexing.
Assess the current index setup and suggest or implement changes to optimize the aggregation.
Profile Database.
Use MongoDB performance tools to identify potential bottlenecks and propose or implement solutions.
Document Changes.
Document any changes you make and provide recommendations for future improvements.
Skills Required.
MongoDB Mongoose Node.
s Database Optimization Performance Profiling Please provide an estimate for the expected budget and timeline for this task.
We are seeking to resolve this issue as soon as possible.
Please DO NOT waste our time if you are not totally skilled and if you a chatGPT only user.
JavaScript MongoDB Node.
s Programação de Banco de Dados Performance Tuning ID do Projeto.
# Sobre o projeto 35 propostas Aberto para ofertas Projeto remoto Ativo em 1 hora atrás