Maybe when you can have very hot keys that can give trouble to your 3(replication) cassandra nodes ? Example: why does facebook use memcache ? They certainly have things distributed on thousands of servers.
On Thu, Oct 6, 2016 at 11:40 PM, KARR, DAVID <dk0...@att.com> wrote: > I've seen use cases that briefly describe using Hazelcast as a "front-end" > for Cassandra, perhaps as a cache. This seems counterintuitive to me. Can > someone describe to me when this kind of architecture might make sense? >
