[rabbitmq-discuss] active active solution over wan and lan

Tue Jan 28 21:52:56 GMT 2014

On 29 Jan 2014, at 01:43, Mysurf Mail <stammailbox at gmail.com> wrote:

> What does it mean "not recommended for use across a WAN"?
> I cant understand this remark - If I buy three machines on ec2 will I need to establish a domain controller/dns server?

WAN means Wide Area Network. It has nothing to do with DNS or AD domains.
In the EC2 example, your cluster nodes should be in one availability zone, or at least region.

Cross-region replication should happen over Shovel or Federation plugins: they handle network
partitions well at the cost of weak inter-cluster consistency (AP in CAP). To put it differently,
they offer asynchronous replication, while mirrored queues offers synchronous replication
(CP in CAP).

See http://www.rabbitmq.com/partitions.html for all the gory details about what options
you have when handling network failures. Pick the strategy that suits your project/team
best.

MK

Software Engineer, Pivotal/RabbitMQ