In this blog we will review different techniques for modelling data structures in Elasticsearch. A project case is used to describe our approach on handling a small sized product data set with a large sized related product variations data set. Furthermore we will show how certain modelling decisions resulted in a 1000 factor query performance gain! […]
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Tag: Performance
Axon Framework 2.0-rc1 released
Axon 2 has hit an important milestone today, as we have published the first Release Candidate. This release marks a major milestone towards the final 2.0 release, expected early January. All features on the roadmap have been implemented in this release. The coming weeks, these features will be refined and fine-tuned for optimal performance and […]
Java Profiler Comparison
While maintaining one of our client’s applications I noticed some performance problems under higher load. It seems logical to think when increasing the load on the application, that the performance will decrease. However, in my case the performance decreased at a rate much higher than when compared to the increased load. I did wonder, maybe […]
Introducing Lucene Index Doc Values
From day one Apache Lucene provided a solid inverted index datastructure and the ability to store the text and binary chunks in stored field. In a typical usecase the inverted index is used to retrieve & score documents matching one or more terms. Once the matching documents have been scored stored fields are loaded for the top N […]
Processing 1M tps with Axon Framework and the Disruptor
LMAX, a trading company in the UK, recently open sourced one of their core components: the Disruptor. This component allows reduces execution overhead by removing the necessity for locks, while still keeping processing order guarantees. A pretty ingenious piece of engineering, if you ask me. I tried to apply the disruptor to the Axon Command […]
Lucene indexing gains concurrency
Imagine you are a Kindergarten teacher and a whole bunch of kids are playing with lego. Suddenly it’s almost 4pm and the big mess needs to be cleaned up, so you ask each kid to pick up one lego brick and put it in your hands. They all run around, bringing bricks to you one […]
Exploring the world of Android :: Part 2
And I’m back! Reporting live on the glorious adventures in the exciting world of Android. This blog post is the second one in the Android series. This time with code samples! Yeah! In my first blog post about Android I talked about setting up a project using Android. This time I want to discuss a […]
Performance testing a Flex BlazeDS application
In the past few years I’ve seen an increasing interest in Flex applications at our customers. I have to say that I’m not surprised about this trend. Not only do Flex applications generally look great, but they also provide a big boost to user experience. As a developer and architect I am also quite pleased […]