I recently had to find in one of our big database if a large set a users did a specific action. With no time frame. That means that potentially millions of ids must be compared to dozens of millions actions, and growing.
This beginning to be small big data… Continue reading MongoDB: fastest way to compare two large sets
If you are a “regular” SQL or MySQL user, MongoDB’s aggregation framework may be a little obscure.
In this article, I’ll show you the key to understand it. Continue reading Understand MongoDB’s aggregation framework
If you try now to install Munin monitoring for MongoDB database, you’ll find in the Mongo’s documentation, a link to an repository for munin plugins. The bad thing is this repository were updated for the last time on Feburay 2012. Of course, since 2012, MongoDB evolved and this plugins were not working at all on a recent version of MongoDB (2.6+).
Principally because MongoDB now removed the auto activation of the rest server (for security reasons). Continue reading Monitoring MongoDB in Munin on Ubuntu (updated)