Drastic Elastic [Part 3]: Cluster Setup

ElasticSearch does not offer support for clusters spanning data centres. However, on our project we had access to a network latency of 400 *micro*seconds (0.4 ms) between three separate locations in the same city, and decided to test a cluster spanning all three data centres. Network latency did not prove to be a problem, but a more tricky issue was deciding how to set up the cluster to best guard against network partitioning. Weiterlesen

Apache Mesos: An introduction

One of the biggest challenges in data centers is to maintain multiple clusters for different workloads. Say you want to run Hadoop, Kafka and Storm which means that you have to maintain 3 different clusters. These different clusters are hardly utilized most of the time so for example when you run Hadoop you need many resources to get the job done but the rest of the day these resources stay idle. With a very simple calculation you can see how much time your resources are idle and only waste space and money (and we didn’t talk about hardware replacements at this point!). Read on for the nitty gritty details in this first article in our Mesos mini series. Weiterlesen

inovex retrospex [July 2015]

Another month passed, another retrospex due. This time we’re talking Android embedded, IPv6 for mobile and women in tech – more precisely Sophie Wilson, the creator of the ARM architecture. Read on for everything new in tech you might have missed in July. Weiterlesen