For the ones started their journey with Elasticsearch before version 5.x sometimes upgrading to the newer versions like 6.x or 7.x bring many challenges. From data type changes to the index structure changes and deprecations, from Transport to REST client and so one. One of those changes that would influence your system, is the scoring algorithm evolution. In this blog, we demonstrate the impact on relevance and scoring if the Elasticsearch changes its algorithms under the hood between major versions. We will show it practically, using a small dataset. If the scoring feature of Elasticsearch…

ArchUnit is a great tool to enforce architectural rules for your java code base by writing simple unit tests.

You heard all the potentials that Machine Learning (ML) is capable. Detecting fraud, predicting machine failure or understanding customer behavior. ML delivers tremendous impact to a variety of businesses.

Today we are looking into the Elasticsearch language support of Chinese. Chinese is spoken by the ethnic Chinese majority and many minority ethnic groups in China. About 1.2 billion people (around 16% of the world's population) speak some form of Chinese as their first language. We are an international company, so having customers in Singapore or Hong Kong makes it super interesting. Chinese consists of many dialects and mostly two written forms. In our first section, I will clarify which region uses what dialect and written form. After that, we are looking at what is supported by…

The German "Onlinezugangsgesetz" (online access act) requires the municipal, state and federal governments to offer their services to citizens digitally via portals by the end of 2022. Paired with the increasing usage of mobile phones to access websites and online services, this poses big challenges to IT companies that used to develop solutions for governments.