High-Performance Java Persistence Newsletter, Issue 15

Introduction Welcome to a new issue of the High-Performance Java Persistence Newsletter in which we share articles, videos, workshops, and StackOverflow answers that are very relevant to any developer who interacts with a database system using Java.

MongoDB 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 familiar with our virtual project requirements and the second part talking about common optimization techniques. When you first start using MongoDB, you’ll immediately notice it’s schema-less data model. But schema-less doesn’t mean skipping proper data modeling (satisfying your application business and performance requirements). As opposed to a SQL database, a NoSQL document model is more focused towards… Read More

MongoDB 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 analyze of its real-life usage. Because a theory is better understood in a pragmatic context, I will first present you our virtual project requirements. Introduction Our virtual project has the following requirements: it must store valued time events represented as v=f(t) it must aggregate the minimum, maximum, average and count records by: seconds in a minute minutes in an hour… Read More

NoSQL 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 experiment on MongoDB aggregating framework, I was challenged by the JOOQ team to match my results against Oracle. Matching MongoDB and Oracle is simply honoring Mongo, as Oracle is probably the best SQL DB engine. Being a simple experiment, it’s dangerous to draw any conclusion, since I was only testing the out-of-the-box Mongo performance, without taking advantage of… Read More