spring-cloud-heroku-registry

Example

Maven project demonstrating clustered behaviour together with Axon framework 3.0.3 on Heroku Private Spaces.

Prerequisites (Local Setup):

Additional loopback address

macOS: sudo ifconfig lo0 alias 127.0.0.2 up

Local DNS server

Dnsmasq example:

/usr/local/etc/dnsmasq.conf:

addn-hosts=/etc/hosts.web.cloudapp.app.localspace

/etc/hosts.web.cloudapp.app.localspace:

127.0.0.1 web.cloudapp.app.localspace
127.0.0.2 web.cloudapp.app.localspace

Run two simultaneous instances

In order to run the example locally set the following environment variables and system properties which are also available on Heroku:

HEROKU_DNS_FORMATION_NAME: web.cloudapp.app.localspace

HEROKU_PRIVATE_IP: 127.0.0.1 and 127.0.0.2 for the first and second instance respectively.

SPRING_CLOUD_HEROKU_PORT or PORT or server.port system property: 8080

Use 127.0.0.1 and 127.0.0.2 as the server.address system property for the first and second instance respectively.

Send the following payload with content-type application/json to the NoteController exposed API at POST http://127.0.0.1:8080/note or http://127.0.0.2:8080/note:

{
	"count": 1000,
	"text": "someNote"
}

You should see that the generated id's of the notes are split between the two instances.