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Category Archives: Clustering

Clustering reactmq with akka-cluster

  • By Adam Warski
  • 4 November, 2014
  • 4 Comments

In the last two posts on reactmq, I described how to write a reactive, persistent message queue. The queue has the following characteristics: there is a single broker storing the … Continue Reading →


Evaluating persistent, replicated message queues (updated w/ Kafka)

  • By Adam Warski
  • 1 July, 2014
  • 42 Comments

An updated and extended version of this post is available on SoftwareMill’s website. Below you can find the original content containing benchmarks from 2014. Update 17/07/2014: added Kafka benchmarks Update … Continue Reading →


Benchmarking SQS

  • By Adam Warski
  • 24 June, 2014
  • 13 Comments

SQS, Simple Message Queue, is a message-queue-as-a-service offering from Amazon Web Services. It supports only a handful of messaging operations, far from the complexity of e.g. AMQP, but thanks to … Continue Reading →


Cluster-wide Java/Scala application deployments with Docker, Chef and Amazon OpsWorks

  • By Adam Warski
  • 12 June, 2014
  • 2 Comments

Docker is great for running isolated containers on a single node. However, most software systems run on multiple nodes, so in addition to Docker, we need some way of specifying … Continue Reading →


Big data: when single node is better than clustered

  • By Adam Warski
  • 6 March, 2014
  • 1 Comment

There’s a lot of hype about “big data” and a general trend to try to apply Hadoop to almost every problem. However, sometimes it turns out that you can get … Continue Reading →


Akka vs Storm

  • By Adam Warski
  • 25 June, 2013
  • 23 Comments

I was recently working a bit with Twitter’s Storm, and it got me wondering, how does it compare to another high-performance, concurrent-data-processing framework, Akka. What’s Akka and Storm? Let’s start … Continue Reading →


ElasticMQ 0.4: message replication

  • By Adam Warski
  • 28 March, 2012
  • No Comments

ElasticMQ is a message queue system, with Java, Scala and an Amazon SQS-compatible REST interface. The 0.4 release brings a new major feature: data replication. You can now setup a … Continue Reading →


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