Design a HA cluster to serve our new buffering service, Kafka, and review with fr-tech. Provision a multi-node production cluster which is read-write to the frack clusterSet up a simple master -> slave replicated Redis server. Redis 2 is fine. We will connect to this server from the payments boxes (please enforce write-only permissions), the listeners, and exclusively writeable by payments boxesfrom the Civi jobs.
It should require clients to authenticate. Authentication is only provided by Kafka >= 0.9. I'm not sure if any of the PHP clients support authentication, howeverAuthentication would be prudent.
WMF Analytics are currently plannIMO we should use both of the disk backing to deploy 0.9options, but we're currently running 0.8RDB and AOF.
Setting up a staging clustserver would be ideal, but not required. This can probably live on the staging box.
~~Look into [[ http://redis.io/topics/cluster-spec | Redis Cluster ]], available only in Redis >= 3.0.0, which does nicely automatic failover things. There's a backport available for jessie: https://packages.debian.org/jessie-backports/redis-server ~~