Chapter 27. Use Red Hat Data Grid with Amazon Web Services
27.1. The S3_PING JGroups Discovery Protocol
S3_PING is a discovery protocol that is ideal for use with Amazon's Elastic Compute Cloud (EC2) because EC2 does not allow multicast and therefore MPING is not allowed.
Each EC2 instance adds a small file to an S3 data container, known as a bucket. Each instance then reads the files in the bucket to discover the other members of the cluster.
