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Comment by pibefision | Hacker News Reader

What sites are using MongoDB on production?

We're using it for http://www.serverdensity.com where our database is around 600GB replicated over multiple data centres.

How do you handle security when replicating across data centers? It's my understanding that MongoDB supports authentication, but not encryption.

An encrypted tunnel that isn't initiated at the database level should work fine.

Addendum: I'm more than a little puzzled that someone would be aware that a particular nosql database didn't support encryption natively and yet wasn't aware how tunneling works.

You are making an assumption in your addendum that uggedal does not understand how tunneling works. All he did was ask how they handle security not "how does tunneling work?"

I've actually used http://www.tinc-vpn.org/ to tunnel Tokyo Tyrant between data centers. It was a bit flaky at times though, so hardware Cisco tunneling looks like a good option if you have access to the firewall in your environment (eliminates all cloud providers).

Yeh, we have a site to site VPN through Cisco hardware firewalls. This is a good way to do it because it removes extra complexity from the database. Let the database handle just what it needs to do, and do it well, because there's probably better tools for the other stuff elsewhere.

sourceforge, github, nyt, ea, disqus: http://www.mongodb.org/display/DOCS/Production+Deployments

We are using it in production, currently replicating across multiple datacenters. We're mainly using it as a CRUD datastore with advanced stored procedures and atomic update capabilities. At peak moments our MongoDB servers are handling around 10,000 operations / second.

Can you tell me your hardware specs and CPU usage? Just curious since I'm considering mongo for some of our future games.

Well, it's kind of hard to tell, since we're combining our MongoDB nodes with other services too (Hadoop DFS datanodes too, to name a common example). We're running MongoDB on 12 different virtual dedicated servers, comparable to a dual core Intel Xeon with 4GB ram.

But I can tell you that you really shouldn't worry about MongoDB and performance, unless you want a really high load on a single server; I've heard it being able to do 20k write ops / sec on a single commodity server. From what I can see, our results kinda line up with that: MongoDB performance certainly isn't a problem.

http://get.harmonyapp.com/ (by the author of MongoMapper if I'm right)

I use MongoDB in production for 2 customers projects too.

You are right - both are projects of John Nunemaker.

A bunch of large sites use it for specialized tasks, and business insider uses it for everything. They have a list here: http://www.mongodb.org/display/DOCS/Production+Deployments

We're in the process of moving from SimpleDB to MongoDB for http://www.introspectrum.com, with a bit south of 100GB of data at the moment.

I am for a small, new site (all aspects of the site's data needs). Haven't had any troubles since I started using it last summer.

Defensio. Our Mongo database is ~250gb

I use it in production for everything on two smaller sites and one largish one, and as a message queue on a number of others. For what it's worth I have been really impressed by its performance and flexibility, and the professional attitude of its developers. Definitely worth checking out.

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