This is a small example on how to implement a transport layer for the LifeRaft
module. In this example we've implemented axon as default transport mechanism.
The only problem here is that axon will buffer messages if it cannot send it.
And in Raft, we will continue to attempt to send a message until we get
a successful callback. In order to fix this we've set the hwm (high water mark)
option of axon to -1 to turn the queueing off.
We assume 6 node cluster in this example this is so we can at least turn one
cluster off for fail over purposes. To start a node process on a different port
you can use the --port cli flag. To see how the internal work of all the
things you can enable the DEBUG environment variable and set it's value to
*.
So start the cluster we need to start the node process 6x times:
DEBUG=* node index.js --port 8081
DEBUG=* node index.js --port 8082
DEBUG=* node index.js --port 8083
DEBUG=* node index.js --port 8084
DEBUG=* node index.js --port 8085
DEBUG=* node index.js --port 8086
And behold. You have a cluster.