Articles By Christian Dahlqvist

18 October 2018 Engineering

Efficient Duplicate Prevention for Event-Based Data in Elasticsearch

By Christian Dahlqvist

Need to prevent duplicates in the Elastic Stack with minimal performance impact? We'll look at different options and provide some practical guidelines.

22 May 2018 Engineering

A Practical Introduction to Logstash

By Christian Dahlqvist

An introduction to Logstash that shows you how to work with it when developing a configuration for parsing and ingesting access logs into Elasticsearch.

03 April 2018 Engineering

Securing GDPR Personal Data with Access Controls

By Christian DahlqvistMike Paquette

Securing and controlling access to personal data is fundamental to GDPR. See how Elastic security features can help support a wide range of access policies.

17 January 2018 Engineering

Should I use Logstash or Elasticsearch ingest nodes?

By Christian Dahlqvist

Unsure about when to use Logstash or Elasticsearch ingest node? This blog post guides you through the things to consider when making that decision.

22 November 2017 Engineering

Why am I seeing bulk rejections in my Elasticsearch cluster?

By Christian Dahlqvist

Experiencing bulk rejections leading to poor indexing performance? This blog post explains why Elasticsearch rejects requests and how to get around it.

18 September 2017 Engineering

How many shards should I have in my Elasticsearch cluster?

By Christian Dahlqvist

If you are looking for practical guidelines around how many indices and shards to have in your cluster, this blog post will help you avoid common pitfalls.

19 June 2017 Engineering

Filebeat modules, access logs and Elasticsearch storage requirements

By Christian Dahlqvist

In this blog post, we explore the on-disk storage requirements of data indexed using Filebeat modules and discuss further optimizations and related tradeoffs.