Hi list, I'm trying to understand the RGW cache consistency model. My Ceph cluster has multiple RGW instances with HAProxy as the load balancer. HAProxy would choose one RGW instance to serve the request(with round-robin). The question is if RGW cache was enabled, which is the default behavior, there seem to be some cache inconsistency issue. e.g., object0 was cached in RGW-0 and RGW-1 at the same time. Sometime later it was updated from RGW-0. In this case if the next read was issued to RGW-1, the outdated cache would be served out then since RGW-1 wasn't aware of the updates. Thus the data would be inconsistent. Is this behavior expected or is there anything I missed?
Sincerely, Yuan _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
