Performance category needed [DONE]

[maxhodges]

I’d be happy to help migrate performance posts to the new category, but I’d need temporary permission to do that.

there are a lot, but I can’t move any of them, i.e.:

Mongo indexing in a Meteor app

I’m trying to wrap my head around indexing in mongoldb in my meteor app. Question 1: When exactly is the index performed? Specifically, if I have a simple form that asks for input from the user and upon a button click the query spits out a report of some kind, is the collection first indexed upon the button click, and then the query runs right after the index has finished? Question 2: How expensive is the build of the index? Put another way, could it be possible that the building of the index …

Collection._ensureIndex creating several indexes?

I’m trying to understand my database indexing. When starting, my server runs: Videos._ensureIndex( { _id: 1, owner_id: 1, ts: 1, likesCount: 1, repostsCount: 1, published: 1, isPrivate: 1, readyToPlay: 1, order: 1, favoritesCount: 1, deleted: 1, isSlice: 1, }, { name: 'videoIndex', } ); When I connect to my mongo shell and run db.videos.getIndexes() I get: [ { "v" : 1, "key" : { "_id" : 1 }, "name" : "_id_",…

Subscriptions and performance issues

Hello! I have a rather write heavy collection in my app, and I’m sending down the latest 30 additions to the client from the server via a subscription. There are around 10-15 inserts a second at current peak times. Meteor.publish("items", function (limit) { return Items.find({}, { sort: { createdOn: -1 }, limit: limit } }); Session.setDefault("limit", 30); Tracker.autorun(function () { Meteor.subscribe("items", Session.get("limit")); }); That …

Oplog alternatives for scaling

In theory and not super big scale you can already architect instances layout in a way when every reactive collection is in separate database, put meteor instance above it and provide DDP method which will feed you information based on variable query. Than in another server instance you can DDP.connect, create collection, subscribe and than query it as you want. Example: http://stackoverflow.com/questions/23797695/how-to-subscribe-via-ddp-connections-to-other-meteor-servers-on-the-server-side I…

Meteor method responses slow

How many documents are you sorting on? I’m curious as to why your method takes 3 seconds! Are you waiting in your method on an async function (besides the query)?