A Journey of a Thousand Miles Begins with a Single Step

Use ruby bundler behind a proxy

How to install the ruby bundler behind a proxy with sudo.

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Delete Elasticsearch documents by query in Version 5

To delete documents from an index has changed in Version 5. A little example how to delete documents in Elasticsearch v5.1.x, how to monitor the status and free up the disk space.

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Aggregations in the Elasticsearch Query DSL

A small example how to count documents in Elasticsearch using the Query DSL Aggregations.

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Use Sonarqube for Code Inspection

Sonarqube is a starting point to find flaws in your source code. This post gives an introduction and demonstrates how to exclude false positives.

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Fix timestamp parse failure in Elasticsearch

If you use logstash to send logs to elasticsearch in JSON format, you may experience a _timestampparsefailure for this date format [24/Jan/2017:09:04:07 +0100]. This date format is often used in the access.log e.g. JBoss EAP. To solve that, just add an additional date format pattern into the index template.

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My first TechRadar

At my team kickoff meeting was a small coding session. The main objective is to create a tech-radar. In short, technology radars are a way to assess and evaluate your current work with your technology ecosystem. This is, in my humble opinion, a mandatory tool for knowing what you have and what you need to accomplish or align to the company’s strategy.

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