The London Java Community: Clustering and Distributed Data: The Winning Combination?

Clustering and Distributed Data: The Winning Combination?

For a mission-critical system such as payment processing for a bank, you need complete assurance that the system is fault-tolerant and can gracefully handle periods of unavailability, network SNAFUs, and other associated software fun and games.

This presentation makes a powerful case for a combination of two Akka concepts - clustering and distributed data - to demonstrate how you can persist state across the cluster and therefore not need to worry about individual nodes going down for maintenance, or indeed for unforeseen reasons. We also deal with the fact that we might need to only be able to run one instance of an actor in a cluster, by introducing the concept of a cluster singleton.

We then go on to write a simple TFTP server in Akka, which runs in an Akka cluster and uses Akka Distributed Data to distribute client data. So any member of the cluster that receives a request for data is able to handle it independently.

About the speaker

Patrick Altaie is a consultant for Icon Solutions, a financial services consultancy, working with some of the world's leading financial services organisations. Recently he's been working on IPF - Icon's flagship real-time payments processing platform. IPF is built using reactive concepts and leading open-source frameworks, including Akka.

You can follow him on Twitter at @paltaie (

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6.30pm: Registration and pizza sponsored by Gridgain Systems (

7pm: Clustering and Distributed Data: The Winning Combination? - Patrick Altaie

8pm: Finish

Big thanks to Skills Matter for providing the venue and Gridgain for sponsoring the pizza. Please remember to let Skills Matter know you'll be attending via their website - (

This event is organised by RecWorks on behalf of the London Java Community.

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The London Java Community (LJC) is a group of Java Enthusiasts who are interested in benefiting from shared knowledge in the industry. Through our forum and regular meetings you can keep in touch with the latest industry developments, learn new Java (& other JVM) technologies, meet other developers, discuss technical/non technical issues and network further throughout the Java Community.