memcached replication (with consistant hash)

[mcarbonneaux]

ability to replicate key/value on a second node (by constistant hash), and ability to read from this second node when the first is down...

[yuerugou54]

马晓栋已经收到您的来件，谢谢!

[corradofiore]

Such a function would be great because it would alleviate the effect of using preemptible spot instances. Read-wise, I reckon it would make sense to just balance reads among the two nodes rather than trying on the "master" first though.