Book Image

Getting Started with Hazelcast, Second Edition

By : Matthew Johns
Book Image

Getting Started with Hazelcast, Second Edition

By: Matthew Johns

Overview of this book

Table of Contents (19 chapters)
Getting Started with Hazelcast Second Edition
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Getting straight to the point


One historical issue with the client method of connecting to the cluster is that most operations require multiple hops to perform an action. This is because we only maintain a connection to a single node of the cluster and run all our operations through it. With more recent versions of Hazelcast, this issue has been addressed; clients have been made smarter. As the strategy of data partitioning is relatively simple and operates on a consistent hashing algorithm, this knowledge and awareness has been added to the clients, allowing them to route cluster operations directly to the node that owns the data being interacted with. For operations that are not key based and hence, don't have a nominal owner, LoadBalancer within the client will attempt to spread the load between the available member nodes; by default, this uses a round-robin strategy but is a configurable option within ClientConfig used to create the client.

However, these routing smarts might not work...