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MongoDB 2.6 is $out
Introduction MongoDB is evolving rapidly. The 2.2 version introduced the aggregation framework as an alternative to the Map-Reduce query model. Generating aggregated reports is a recurrent requirement...
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Integration testing done right with Embedded MongoDB
Introduction Unit testing requires isolating individual components from their dependencies. Dependencies are replaced with mocks, which simulate certain use cases. This way, we can validate the in-test...
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MongoDB Incremental Migration Scripts
Introduction An incremental software development process requires an incremental database migration strategy. I remember working on an enterprise application where the hibernate.hbm2ddl.auto was the...
View ArticleOptimistic locking retry with MongoDB
In my previous post I talked about the benefit of employing optimistic locking for MongoDB batch processors. As I wrote before, the optimistic locking exception is a recoverable one, as long as we...
View ArticleMongoDB Facts: 80000+ inserts/second on commodity hardware
Introduction While experimenting with some time series collections I needed a large data set to check that our aggregation queries don’t become a bottleneck in case of increasing data loads. We settled...
View ArticleMongoDB Facts: Lightning fast aggregation
In my previous post, I demonstrated how fast you can insert 50 millions time-event entries with MongoDB. This time, we will make use of all that data to fuel our aggregation tests. This is how a...
View ArticleNoSQL is not just about BigData
Introduction There is so much debate on the SQL vs NoSQL subject, and probably this is our natural way of understanding and learning what’s the best way of storing data. After publishing the small...
View ArticleMongoDB time series: Introducing the aggregation framework
In my previous posts I talked about batch importing and the out-of-the-box MongoDB performance. Meanwhile, MongoDB was awarded DBMS of the year 2013, so I therefore decided to offer a more thorough...
View ArticleA beginner’s guide to MongoDB performance turbocharging
Introduction This is the second part of our MongoDB time series tutorial, and this post will be dedicated to performance tuning. In my previous post, I introduced you into our virtual project...
View ArticleMongoDB and the fine art of data modeling
Introduction This is the third part of our MongoDB time series tutorial, and this post will emphasize the importance of data modeling. You might want to check the first part of this series, to get...
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